Summary of the invention
For solving the problems of the technologies described above, embodiments provide a kind of disposal route and terminal of voice data.
The disposal route of the voice data that the embodiment of the present invention provides comprises:
Obtain audio file, the form according to described audio file is decoded to described audio file, obtains the original waveform data of described audio file;
Described original waveform data is analyzed, isolates voice Wave data and musical instrument Wave data;
According to described musical instrument Wave data, draw the musical instrument kind that described audio file is corresponding;
Point out the musical instrument kind that described audio file is corresponding;
Based on the musical instrument replacement operation that user selects, read the frequency spectrum data in musical instrument frequency spectrum data storehouse, and according to the intensity of described audio file and rhythm, generate new musical instrument Wave data.
In the embodiment of the present invention, described described original waveform data to be analyzed, isolates voice Wave data and musical instrument Wave data, comprising:
By voice detection algorithm (VAD, VoiceActivityDetection), described original waveform data is detected, obtain voice Wave data;
By multiband rejection filter, filtering is carried out to described voice Wave data, obtain musical instrument Wave data.
In the embodiment of the present invention, described according to described musical instrument Wave data, draw and comprise the musical instrument kind that described audio file is corresponding:
According to described musical instrument Wave data, determine fundamental tone and the overtone ratio of musical instrument;
Musical instrument frequency spectrum in described fundamental tone and overtone ratio and musical instrument frequency spectrum data storehouse is compared, draws the musical instrument kind that described audio file is corresponding.
In the embodiment of the present invention, the described musical instrument replacement operation selected based on user, reads the frequency spectrum data in musical instrument frequency spectrum data storehouse, and according to the intensity of described audio file and rhythm, generates new musical instrument Wave data, comprising:
Based on the musical instrument replacement operation that user selects, read in musical instrument frequency spectrum data storehouse replace the frequency spectrum data of musical instrument;
Intensity when playing according to described audio file and rhythm, replace with the frequency spectrum data of replaced musical instrument, generate new musical instrument Wave data by the frequency spectrum data being replaced musical instrument.
In the embodiment of the present invention, described method also comprises:
When the frequency spectrum data being replaced musical instrument is replaced with the frequency spectrum data of replaced musical instrument, replace the frequency spectrum data in section seclected time.
The terminal that the embodiment of the present invention provides comprises:
Audio decoder module, for obtaining audio file, the form according to described audio file is decoded to described audio file, obtains the original waveform data of described audio file;
Music pretreatment module, for analyzing described original waveform data, isolates voice Wave data and musical instrument Wave data;
Musical instrument kind judge module, for according to described musical instrument Wave data, draws the musical instrument kind that described audio file is corresponding;
Musical instrument replacement module, for the musical instrument replacement operation selected based on user, reads the frequency spectrum data in musical instrument frequency spectrum data storehouse, and according to the intensity of described audio file and rhythm, generates new musical instrument Wave data.
In the embodiment of the present invention, described music pretreatment module comprises:
Detection sub-module, for being detected described original waveform data by voice detection algorithm VAD, obtains voice Wave data;
Filtering submodule, for carrying out filtering by multiband rejection filter to described voice Wave data, obtains musical instrument Wave data.
In the embodiment of the present invention, described musical instrument kind judge module comprises:
Determine submodule, for according to described musical instrument Wave data, determine fundamental tone and the overtone ratio of musical instrument;
Comparison sub-module, for being compared by the musical instrument frequency spectrum in described fundamental tone and overtone ratio and musical instrument frequency spectrum data storehouse, draws the musical instrument kind that described audio file is corresponding.
In the embodiment of the present invention, described musical instrument replacement module comprises:
Reading submodule, for the musical instrument replacement operation selected based on user, read in musical instrument frequency spectrum data storehouse replace the frequency spectrum data of musical instrument;
Replace submodule, intensity during for playing according to described audio file and rhythm, replace with the frequency spectrum data of replaced musical instrument, generate new musical instrument Wave data by the frequency spectrum data being replaced musical instrument.
In the embodiment of the present invention, described replacement submodule, time also for the frequency spectrum data being replaced musical instrument is replaced with the frequency spectrum data of replaced musical instrument, replaces the frequency spectrum data in section seclected time.
In the technical scheme of the embodiment of the present invention, when terminal gets audio file, this audio file is decoded, obtains original waveform data.Then it is analyzed, obtain musical instrument Wave data, and then obtain musical instrument kind, musical instrument accompaniment human-computer interaction interface demonstrated in current music is which or which, and allow user select the musical instrument needing to replace voluntarily, thus replace one by one, playability is higher, also hommization more.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The terminal realizing each embodiment of the present invention is described referring now to accompanying drawing.In follow-up description, use the suffix of such as " module ", " parts " or " unit " for representing element only in order to be conducive to the explanation of the embodiment of the present invention, itself is specific meaning not.Therefore, " module " and " parts " can mixedly use.
Terminal can be implemented in a variety of manners.Such as, the terminal described in the embodiment of the present invention can comprise such as mobile phone, smart phone, notebook computer, digit broadcasting receiver, personal digital assistant (PDA, PersonalDigitalAssistant), the terminal of panel computer (PAD), portable media player (PMP, PortableMediaPlayer), guider etc. and the fixed terminal of such as digital TV, desk-top computer etc.Below, suppose that terminal is mobile terminal.But it will be appreciated by those skilled in the art that except the element except being used in particular for mobile object, structure according to the embodiment of the present invention also can be applied to the terminal of fixed type.
Fig. 1 is the hardware configuration signal of the mobile terminal realizing each embodiment of the present invention.
Mobile terminal 100 can comprise wireless communication unit 110, audio/video (A/V) input block 120, user input unit 130, sensing cell 140, output unit 150, storer 160, interface unit 170, controller 180 and power supply unit 190 etc.Fig. 1 shows the mobile terminal with various assembly, it should be understood that, does not require to implement all assemblies illustrated.Can alternatively implement more or less assembly.Will be discussed in more detail below the element of mobile terminal.
Wireless communication unit 110 generally includes one or more assembly, and it allows the wireless communication between mobile terminal 100 and wireless communication system or network.Such as, wireless communication unit can comprise at least one in broadcast reception module 111, mobile communication module 112, wireless Internet module 113, short range communication module 114 and positional information module 115.
Broadcast reception module 111 via broadcast channel from external broadcasting management server receiving broadcast signal and/or broadcast related information.Broadcast channel can comprise satellite channel and/or terrestrial channel.Broadcast management server can be generate and send the server of broadcast singal and/or broadcast related information or the broadcast singal generated before receiving and/or broadcast related information and send it to the server of terminal.Broadcast singal can comprise TV broadcast singal, radio signals, data broadcasting signal etc.And broadcast singal may further include the broadcast singal combined with TV or radio signals.Broadcast related information also can provide via mobile communications network, and in this case, broadcast related information can be received by mobile communication module 112.Broadcast singal can exist in a variety of manners, such as, it can with DMB (DMB, DigitalMultimediaBroadcasting) electronic program guides (EPG, ElectronicProgramGuide), digital video broadcast-handheld (DVB-H, the form of electronic service guidebooks (ESG, ElectronicServiceGuide) DigitalVideoBroadcasting-Handheld) etc. and existing.Broadcast reception module 111 can by using the broadcast of various types of broadcast system Received signal strength.Especially, broadcast reception module 111 can by using such as multimedia broadcasting-ground (DMB-T, DigitalMultimediaBroadcasting-Terrestrial), DMB-satellite (DMB-S, DigitalMultimediaBroadcasting-Satellite), digital video broadcast-handheld (DVB-H), forward link media (MediaFLO, MediaForwardLinkOnly) Radio Data System, received terrestrial digital broadcasting integrated service (ISDB-T, etc. IntegratedServicesDigitalBroadcasting-Terrestrial) digit broadcasting system receives digital broadcasting.Broadcast reception module 111 can be constructed to be applicable to providing the various broadcast system of broadcast singal and above-mentioned digit broadcasting system.The broadcast singal received via broadcast reception module 111 and/or broadcast related information can be stored in storer 160 (or storage medium of other type).
Radio signal is sent at least one in base station (such as, access point, Node B etc.), exterior terminal and server and/or receives radio signals from it by mobile communication module 112.Various types of data that such radio signal can comprise voice call signal, video calling signal or send according to text and/or Multimedia Message and/or receive.
Wireless Internet module 113 supports the Wi-Fi (Wireless Internet Access) of mobile terminal.This module can be inner or be externally couple to terminal.Wi-Fi (Wireless Internet Access) technology involved by this module can comprise WLAN (WLAN, WirelessLocalAreaNetworks) (Wi-Fi), WiMAX (Wibro), worldwide interoperability for microwave access (Wimax), high-speed downlink packet access (HSDPA, HighSpeedDownlinkPacketAccess) etc.
Short range communication module 114 is the modules for supporting junction service.Some examples of short-range communication technology comprise bluetooth, radio-frequency (RF) identification (RFID, RadioFrequencyIdentification), Infrared Data Association (IrDA, InfraredDataAssociation), ultra broadband (UWB, UltraWideband), purple honeybee etc.
Positional information module 115 is the modules of positional information for checking or obtain mobile terminal.The typical case of positional information module is GPS (GPS, GlobalPositioningSystem).According to current technology, GPS module 115 calculates from the range information of three or more satellite and correct time information and for the Information application triangulation calculated, thus calculates three-dimensional current location information according to longitude, latitude and pin-point accuracy.Current, the method for calculating position and temporal information uses three satellites and by using the error of the position that goes out of an other satellite correction calculation and temporal information.In addition, GPS module 115 can carry out computing velocity information by Continuous plus current location information in real time.
A/V input block 120 is for audio reception or vision signal.A/V input block 120 can comprise camera 121 and microphone 1220, and the view data of camera 121 to the static images obtained by image capture apparatus in Video Capture pattern or image capture mode or video processes.Picture frame after process may be displayed on display unit 151.Picture frame after camera 121 processes can be stored in storer 160 (or other storage medium) or via wireless communication unit 110 and send, and can provide two or more cameras 1210 according to the structure of mobile terminal.Such acoustic processing can via microphones sound (voice data) in telephone calling model, logging mode, speech recognition mode etc. operational mode, and can be voice data by microphone 122.Audio frequency (voice) data after process can be converted to the formatted output that can be sent to mobile communication base station via mobile communication module 112 when telephone calling model.Microphone 122 can be implemented various types of noise and eliminate (or suppress) algorithm and receiving and sending to eliminate (or suppression) noise or interference that produce in the process of sound signal.
User input unit 130 can generate key input data to control the various operations of mobile terminal according to the order of user's input.User input unit 130 allows user to input various types of information, and keyboard, the young sheet of pot, touch pad (such as, detecting the touch-sensitive assembly of the change of the resistance, pressure, electric capacity etc. that cause owing to being touched), roller, rocking bar etc. can be comprised.Especially, when touch pad is superimposed upon on display unit 151 as a layer, touch-screen can be formed.
Sensing cell 140 detects the current state of mobile terminal 100, (such as, mobile terminal 100 open or close state), the position of mobile terminal 100, user for mobile terminal 100 contact (namely, touch input) presence or absence, the orientation of mobile terminal 100, the acceleration or deceleration of mobile terminal 100 move and direction etc., and generate order or the signal of the operation for controlling mobile terminal 100.Such as, when mobile terminal 100 is embodied as sliding-type mobile phone, sensing cell 140 can sense this sliding-type phone and open or close.In addition, whether whether sensing cell 140 can detect power supply unit 190 provides electric power or interface unit 170 to couple with external device (ED).Sensing cell 140 can comprise proximity transducer 1410 and will be described this in conjunction with touch-screen below.
Interface unit 170 is used as at least one external device (ED) and is connected the interface that can pass through with mobile terminal 100.Such as, external device (ED) can comprise wired or wireless head-band earphone port, external power source (or battery charger) port, wired or wireless FPDP, memory card port, for connecting the port, audio frequency I/O (I/O) port, video i/o port, ear port etc. of the device with identification module.Identification module can be that storage uses the various information of mobile terminal 100 for authentication of users and can comprise subscriber identification module (UIM, UserIdentifyModule), client identification module (SIM, SubscriberIdentityModule), Universal Subscriber identification module (USIM, UniversalSubscriberIdentityModule) etc.In addition, the device (hereinafter referred to " recognition device ") with identification module can take the form of smart card, and therefore, recognition device can be connected with mobile terminal 100 via port or other coupling arrangement.Interface unit 170 may be used for receive from external device (ED) input (such as, data message, electric power etc.) and the input received be transferred to the one or more element in mobile terminal 100 or may be used for transmitting data between mobile terminal and external device (ED).
In addition, when mobile terminal 100 is connected with external base, interface unit 170 can be used as to allow by it electric power to be provided to the path of mobile terminal 100 from base or can be used as the path that allows to be transferred to mobile terminal by it from the various command signals of base input.The various command signal inputted from base or electric power can be used as and identify whether mobile terminal is arranged on the signal base exactly.Output unit 150 is constructed to provide output signal (such as, sound signal, vision signal, alarm signal, vibration signal etc.) with vision, audio frequency and/or tactile manner.Output unit 150 can comprise display unit 151, dio Output Modules 152, alarm unit 153 etc.
Display unit 151 may be displayed on the information of process in mobile terminal 100.Such as, when mobile terminal 100 is in telephone calling model, display unit 151 can show with call or other communicate (such as, text messaging, multimedia file are downloaded etc.) relevant user interface (UI, or graphic user interface (GUI, GraphicalUserInterface) UserInterface).When mobile terminal 100 is in video calling pattern or image capture mode, display unit 151 can the image of display capture and/or the image of reception, UI or GUI that video or image and correlation function are shown etc.
Meanwhile, when display unit 151 and touch pad as a layer superposed on one another to form touch-screen time, display unit 151 can be used as input media and output unit.Display unit 151 can comprise liquid crystal display (LCD, LiquidCrystalDisplay), thin film transistor (TFT) LCD (TFT-LCD, ThinFilmTransistor-LCD) at least one, in Organic Light Emitting Diode (OLED, OrganicLight-EmittingDiode) display, flexible display, three-dimensional (3D) display etc.Some in these displays can be constructed to transparence and watch from outside to allow user, and this can be called transparent display, and typical transparent display can be such as transparent organic light emitting diode (TOLED) display etc.According to the specific embodiment wanted, mobile terminal 100 can comprise two or more display units (or other display device), such as, mobile terminal can comprise outernal display unit (not shown) and inner display unit (not shown).Touch-screen can be used for detecting touch input pressure and touch input position and touch and inputs area.
When dio Output Modules 152 can be under the isotypes such as call signal receiving mode, call mode, logging mode, speech recognition mode, broadcast reception mode at mobile terminal, voice data convert audio signals that is that wireless communication unit 110 is received or that store in storer 160 and exporting as sound.And dio Output Modules 152 can provide the audio frequency relevant to the specific function that mobile terminal 100 performs to export (such as, call signal receives sound, message sink sound etc.).Dio Output Modules 152 can comprise loudspeaker, hummer etc.
Alarm unit 153 can provide and export that event informed to mobile terminal 100.Typical event can comprise calling reception, message sink, key signals input, touch input etc.Except audio or video exports, alarm unit 153 can provide in a different manner and export with the generation of notification event.Such as, alarm unit 153 can provide output with the form of vibration, when receive calling, message or some other enter communication (incomingcommunication) time, alarm unit 153 can provide sense of touch to export (that is, vibrating) to notify to user.By providing such sense of touch to export, even if when the mobile phone of user is in the pocket of user, user also can identify the generation of various event.Alarm unit 153 also can provide the output of the generation of notification event via display unit 151 or dio Output Modules 152.
Storer 160 software program that can store process and the control operation performed by controller 180 etc., or temporarily can store oneself through exporting the data (such as, telephone directory, message, still image, video etc.) that maybe will export.And, storer 160 can store about when touch be applied to touch-screen time the vibration of various modes that exports and the data of sound signal.
Storer 160 can comprise the storage medium of at least one type, described storage medium comprises flash memory, hard disk, multimedia card, card-type storer (such as, SD or DX storer etc.), random access storage device (RAM, RandomAccessMemory), static random-access memory (SRAM, StaticRandomAccessMemory), ROM (read-only memory) (ROM, ReadOnlyMemory), Electrically Erasable Read Only Memory (EEPROM, ElectricallyErasableProgrammableReadOnlyMemory), programmable read only memory (PROM, ProgrammableReadOnlyMemory), magnetic storage, disk, CD etc.And mobile terminal 100 can be connected the memory function of execute store 160 network storage device with by network cooperates.
Controller 180 controls the overall operation of mobile terminal usually.Such as, controller 180 performs the control relevant to voice call, data communication, video calling etc. and process.In addition, controller 180 can comprise the multi-media module 1810 for reproducing (or playback) multi-medium data, and multi-media module 1810 can be configured in controller 180, or can be configured to be separated with controller 180.Controller 180 can pattern recognition process, is identified as character or image so that input is drawn in the handwriting input performed on the touchscreen or picture.
Power supply unit 190 receives external power or internal power and provides each element of operation and the suitable electric power needed for assembly under the control of controller 180.
Various embodiment described herein can to use such as computer software, the computer-readable medium of hardware or its any combination implements.For hardware implementation, embodiment described herein can by using application-specific IC (ASIC, ApplicationSpecificIntegratedCircuit), digital signal processor (DSP, DigitalSignalProcessing), digital signal processing device (DSPD, DigitalSignalProcessingDevice), programmable logic device (PLD, ProgrammableLogicDevice), field programmable gate array (FPGA, FieldProgrammableGateArray), processor, controller, microcontroller, microprocessor, be designed at least one performed in the electronic unit of function described herein implement, in some cases, such embodiment can be implemented in controller 180.For implement software, the embodiment of such as process or function can be implemented with allowing the independent software module performing at least one function or operation.Software code can be implemented by the software application (or program) write with any suitable programming language, and software code can be stored in storer 160 and to be performed by controller 180.
So far, oneself is through the mobile terminal according to its functional description.Below, for the sake of brevity, by the slide type mobile terminal that describes in various types of mobile terminals of such as folded form, board-type, oscillating-type, slide type mobile terminal etc. exemplarily.Therefore, the present invention can be applied to the mobile terminal of any type, and is not limited to slide type mobile terminal.
Mobile terminal 100 as shown in Figure 1 can be constructed to utilize and send the such as wired and wireless communication system of data via frame or grouping and satellite-based communication system operates.
Describe wherein according to the communication system that the mobile terminal of the embodiment of the present invention can operate referring now to Fig. 2.
Such communication system can use different air interfaces and/or Physical layer.Such as, the air interface used by communication system comprises such as frequency division multiple access (FDMA, FrequencyDivisionMultipleAccess), time division multiple access (TDMA) (TDMA, TimeDivisionMultipleAccess), CDMA (CDMA, and universal mobile telecommunications system (UMTS CodeDivisionMultipleAccess), UniversalMobileTelecommunicationsSystem) (especially, Long Term Evolution (LTE, LongTermEvolution)), global system for mobile communications (GSM) etc.As non-limiting example, description below relates to cdma communication system, but such instruction is equally applicable to the system of other type.
With reference to figure 2, cdma wireless communication system can comprise multiple mobile terminal 100, multiple base station (BS, BaseStation) 270, base station controller (BSC, BaseStationController) 275 and mobile switching centre (MSC, MobileSwitchingCenter) 280.MSC280 is constructed to form interface with Public Switched Telephony Network (PSTN, PublicSwitchedTelephoneNetwork) 290.MSC280 is also constructed to form interface with the BSC275 that can be couple to base station 270 via back haul link.Back haul link can construct according to any one in some interfaces that oneself knows, described interface comprises such as E1/T1, ATM, IP, PPP, frame relay, HDSL, ADSL or xDSL.Will be appreciated that system as shown in Figure 2 can comprise multiple BSC2750.
Each BS270 can serve one or more subregion (or region), by multidirectional antenna or point to specific direction each subregion of antenna cover radially away from BS270.Or each subregion can by two or more antenna covers for diversity reception.Each BS270 can be constructed to support multiple parallel compensate, and each parallel compensate has specific frequency spectrum (such as, 1.25MHz, 5MHz etc.).
Subregion can be called as CDMA Channel with intersecting of parallel compensate.BS270 also can be called as base station transceiver subsystem (BTS, BaseTransceiverStation) or other equivalent terms.Under these circumstances, term " base station " may be used for broadly representing single BSC275 and at least one BS270.Base station also can be called as " cellular station ".Or each subregion of particular B S270 can be called as multiple cellular station.
As shown in Figure 2, broadcast singal is sent to the mobile terminal 100 at operate within systems by broadcsting transmitter (BT, BroadcastTransmitter) 295.Broadcast reception module 111 as shown in Figure 1 is arranged on mobile terminal 100 and sentences the broadcast singal receiving and sent by BT295.In fig. 2, several GPS (GPS) satellite 300 is shown.Satellite 300 helps at least one in the multiple mobile terminal 100 in location.
In fig. 2, depict multiple satellite 300, but understand, the satellite of any number can be utilized to obtain useful locating information.GPS module 115 as shown in Figure 1 is constructed to coordinate to obtain the locating information wanted with satellite 300 usually.Substitute GPS tracking technique or outside GPS tracking technique, can use can other technology of position of tracking mobile terminal.In addition, at least one gps satellite 300 optionally or extraly can process satellite dmb transmission.
As a typical operation of wireless communication system, BS270 receives the reverse link signal from various mobile terminal 100.Mobile terminal 100 participates in call usually, information receiving and transmitting communicates with other type.Each reverse link signal that certain base station 270 receives is processed by particular B S270.The data obtained are forwarded to relevant BSC275.BSC provides call Resourse Distribute and comprises the mobile management function of coordination of the soft switching process between BS270.The data received also are routed to MSC280 by BSC275, and it is provided for the extra route service forming interface with PSTN290.Similarly, PSTN290 and MSC280 forms interface, and MSC and BSC275 forms interface, and BSC275 correspondingly control BS270 so that forward link signals is sent to mobile terminal 100.
Based on above-mentioned mobile terminal hardware configuration and communication system, each embodiment of the inventive method is proposed.
Fig. 3 is the schematic flow sheet of the disposal route of the voice data of the embodiment of the present invention, and as shown in Figure 3, the disposal route of described voice data comprises the following steps:
Step 301: obtain audio file, the form according to described audio file is decoded to described audio file, obtains the original waveform data of described audio file.
The disposal route of the voice data in the embodiment of the present invention is applied to terminal, this terminal at least configures following device: for playing speaker system, the audio decoding apparatus of melody/music excerpt, for judging and change the central processing unit (CPU of musical instrument accompaniment kind, or digital signal processor (DSP CentralProcessingUnit), DigitalSignalProcessor), for carrying out mutual touch control display apparatus with user.
In the embodiment of the present invention, terminal reads the audio file (music file) of exterior storage, and the form according to different audio files is decoded, and restores the original waveform data of audio file.
Step 302: analyze described original waveform data, isolates voice Wave data and musical instrument Wave data.
In the embodiment of the present invention, by voice detection algorithm VAD, described original waveform data is detected, obtain voice Wave data; By multiband rejection filter, filtering is carried out to described voice Wave data, obtain musical instrument Wave data.
Particularly, detected the voice of current broadcasting by voice detection algorithm VAD, then by multiband rejection filter, filtering is carried out to voice, make only to be left accompaniment (musical instrument Wave data) in music.
Step 303: according to described musical instrument Wave data, draws the musical instrument kind that described audio file is corresponding.
In the embodiment of the present invention, according to described musical instrument Wave data, determine fundamental tone and the overtone ratio of musical instrument; Musical instrument frequency spectrum in described fundamental tone and overtone ratio and musical instrument frequency spectrum data storehouse is compared, draws the musical instrument kind that described audio file is corresponding.
Particularly, by fundamental tone and the overtone ratio of musical instrument accompaniment, and the musical instrument frequency spectrum in musical instrument frequency spectrum data storehouse compares, and what draw current accompaniment is the judgement of which kind of musical instrument.The frequency spectrum data of various musical instrument is different, particularly, exactly because be subject to different musical instrument structure, the impact of resonant cavity and manufacture craft etc., for violin, when fingering a stringed instrument with finger, there is the energy of 60% to be converted into the vibration of whole string, create fundamental tone 1000Hz; But the energy simultaneously also having 20% is converted into the frequency of 2000Hz composition, and the energy of 15% is converted into the composition of 3000Hz, and higher hamonic wave ratio below differs, respectively account for the different proportion in remaining 5%.With reference to Fig. 4, the ratio of the fundamental tone of piano, the first overtone, the second overtone is then 80%, 10%, 5% etc., and so calculate, situation is very complicated, exactly because also this complicacy, just can cause the huge of musical instrument family; Each musical instrument just can be caused to be unique existence, to have their unique tone colors.
Step 304: point out the musical instrument kind that described audio file is corresponding.
In the embodiment of the present invention, musical instrument kind is fed back to user by human-computer interaction interface, selected the musical instrument needing to replace by user; Certainly this is selected, also can by user play before namely rule of thumb or interest, arrange in advance and need the musical instrument replaced and the musical instrument be replaced.In addition, user also can select the part of replacement is special time period or whole song.
Step 305: the musical instrument replacement operation selected based on user, reads the frequency spectrum data in musical instrument frequency spectrum data storehouse, and according to the intensity of described audio file and rhythm, generates new musical instrument Wave data.
In the embodiment of the present invention, based on the musical instrument replacement operation that user selects, read in musical instrument frequency spectrum data storehouse replace the frequency spectrum data of musical instrument; Intensity when playing according to described audio file and rhythm, replace with the frequency spectrum data of replaced musical instrument, generate new musical instrument Wave data by the frequency spectrum data being replaced musical instrument.
In the embodiment of the present invention, when the frequency spectrum data being replaced musical instrument is replaced with the frequency spectrum data of replaced musical instrument, replace the frequency spectrum data in section seclected time.
In the embodiment of the present invention, after getting the selection instruction of user, read the frequency spectrum data in musical instrument frequency spectrum data storehouse, the intensity in playing according to current music and rhythm, generate the Wave data of new musical instrument, such performance data user being selected to former musical instrument in the time period needing to replace is replaced.
The technical scheme of the embodiment of the present invention can automatically identify the musical instrument kind in current broadcasting melody, can select according to user simultaneously, at the appointed time section replaces the musical instrument accompaniment play in melody, kind for musical instrument accompaniment carries out man-to-man replacement, there are higher playability and interest, more hommization.
Fig. 5 is the structure composition schematic diagram of the terminal of the embodiment of the present invention, and as shown in Figure 5, described terminal comprises:
Audio decoder module 51, for obtaining audio file, the form according to described audio file is decoded to described audio file, obtains the original waveform data of described audio file;
Music pretreatment module 52, for analyzing described original waveform data, isolates voice Wave data and musical instrument Wave data;
Musical instrument kind judge module 53, for according to described musical instrument Wave data, draws the musical instrument kind that described audio file is corresponding;
Musical instrument replacement module 54, for the musical instrument replacement operation selected based on user, reads the frequency spectrum data in musical instrument frequency spectrum data storehouse, and according to the intensity of described audio file and rhythm, generates new musical instrument Wave data.
In the embodiment of the present invention, described music pretreatment module 52 comprises:
Detection sub-module 521, for being detected described original waveform data by voice detection algorithm VAD, obtains voice Wave data;
Filtering submodule 522, for carrying out filtering by multiband rejection filter to described voice Wave data, obtains musical instrument Wave data.
In the embodiment of the present invention, described musical instrument kind judge module 53 comprises:
Determine submodule 531, for according to described musical instrument Wave data, determine fundamental tone and the overtone ratio of musical instrument;
Comparison sub-module 532, for being compared by the musical instrument frequency spectrum in described fundamental tone and overtone ratio and musical instrument frequency spectrum data storehouse, draws the musical instrument kind that described audio file is corresponding.
In the embodiment of the present invention, described musical instrument replacement module 54 comprises:
Reading submodule 541, for the musical instrument replacement operation selected based on user, read in musical instrument frequency spectrum data storehouse replace the frequency spectrum data of musical instrument;
Replace submodule 542, intensity during for playing according to described audio file and rhythm, replace with the frequency spectrum data of replaced musical instrument, generate new musical instrument Wave data by the frequency spectrum data being replaced musical instrument.
In the embodiment of the present invention, described replacement submodule 542, time also for the frequency spectrum data being replaced musical instrument is replaced with the frequency spectrum data of replaced musical instrument, replaces the frequency spectrum data in section seclected time.
It will be appreciated by those skilled in the art that the associated description that function that each unit in above-mentioned terminal realizes can refer to the disposal route of aforementioned audio data is understood.
Above-mentioned modules and unit are in actual applications, all can by the central processing unit (CPU being arranged in terminal, or microprocessor (MPU CentralProcessingUnit), or digital signal processor (DSP MicroProcessorUnit), DigitalSignalProcessor) or field programmable gate array (FPGA, Field-ProgrammableGateArray) realize.
It should be noted that, in this article, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or device and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or device.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the device comprising this key element and also there is other identical element.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
Through the above description of the embodiments, those skilled in the art can be well understood to the mode that above-described embodiment method can add required general hardware platform by software and realize, hardware can certainly be passed through, but in a lot of situation, the former is better embodiment.Based on such understanding, technical scheme of the present invention can embody with the form of software product the part that prior art contributes in essence in other words, this computer software product is stored in a storage medium (as ROM/RAM, magnetic disc, CD), comprising some instructions in order to make a station terminal equipment (can be mobile phone, computing machine, server, air conditioner, or the network equipment etc.) perform method described in each embodiment of the present invention.
These are only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize instructions of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.