A kind of outer playback matter automatic regulating system of mobile phoneTechnical field
The present invention relates to a kind of outer playback matter automatic regulating system of mobile phone, it is primarily adapted for use in the mobile communication such as mobile phone, PAD and setsStandby, belong to electronic information technical field.
Background technology
Mobile phone has become a part for people's life, and the various use functions of mobile phone are also more and more, and mobile phone is because of itIt is easy to carry and convenient and people's call, favored by increasing people, have become as people and carry with requisite thingOne of product.The ringing volume of wherein existing mobile phone usually manually adjusts volume, so either in environment noiseMiscellaneous downtown area or quietly office interior, the tinkle of bells size of mobile phone can not automatically adjust, the mobile phone of this adjustment structureCan't hear ringing sound of cell phone if ringing sound of cell phone is too small in noisy downtown area, user can be made cannot to answer in time；In addition such asFruit is in quiet interior of handling official business, and because ringing sound of cell phone is excessive, can interfere, so that having influence on office remaining employee's indoorNormal work.And, a lot of people like listening music with mobile phone, but have damage to ear if wearing earphone, with put outwardTalk about that to put power outside a lot of mobile phones not big, and also easily distorsion if reaching maximum.
Therefore, related researcher studies to playback matter outside mobile phone, to can automatically imitate the outer playback matter of standard, existingAutomatically calibration sound field and automatic tonequality regulation technology adopt digital room processing system mostly.Existing electronic terminal product, includingMobile phone, flat board, but it is not limited only to this two classes product, in order to realize automatically adjusting of outer playback matter, the general device adopting includesController MCU1, memory 2, audio signal processing unit 3, loudspeaker switch unit 4 and detector unit 5, as shown in Figure 1.
Its operation principle is that loudspeaker switch unit is used for for audio signal being outputted to external sound from boomboxRing output；Detector unit is used for detecting that audio signal is to export by boombox or external speaker output, and will detectResult is transferred to controller MCU；Controller MCU is used for reading correspondence from memory according to the testing result of detector unit transmissionAcoustic data transmission to audio signal processing unit；Audio treatment unit is carried out to audio signal according to the acoustic data of transmissionProcess.This tonequality processing system is due to needing to realize the regulation of tonequality by external speaker, comparatively laborious.Substantially can notIt is referred to as automatic tonequality regulation technology, simply to realize the amplification to voice signal by external speaker, to be poorly suitable for mobile phoneDeng micromodule equipment.
Content of the invention
In view of the foregoing, it is an object of the invention to overcoming the shortcomings of that above-mentioned prior art exists, and provide a kind of handThe outer playback matter automatic regulating system of machine, this automatic regulating system can be according to the size of external environmental sounds, and corresponding regulation exportsTonequality, when external environmental sounds than larger when, balanced device EQ just focuses on medium-high frequency and is lifted, to increase volume；WhenWhen external environmental sounds are smaller, balanced device EQ just selects, on lifting low frequency and definition, to make audio file entiretyTonequality has one than larger lifting.
For solving above-mentioned technical problem, the technical scheme is that and be achieved in that：A kind of outer playback matter of mobile phone is automaticRegulating system, described automatic regulating system includes：
External voice data acquisition module, for gathering the sound of external environment condition；
Sound modular converter, for changing into data signal the analoging sound signal of the external environment condition of collection；
Digital processing unit DSP, the outside environmental sounds numeral letter of the external voice data sampling module collection after conversionNumber controlled by software algorithm, judge the size of external voice, and the sound that audio file exports is controlled according to external voice sizeMatter；
Output module, is conveyed to the different balanced device EQ of loudspeaker the audio file controlling through digital processing unit DSPAnd gain, to automatically adjust outer playback matter.
Further, in digital processing unit DSP, a setting value is preset with to outside environmental sounds size, works as external environmentWhen sound exceedes setting value, described digital processing unit DSP controls the balanced device EQ of output module to be lifted in medium-high frequency, increasesVolume；When external environmental sounds are less than setting value, described digital processing unit DSP controls the balanced device EQ of output module to selectOn lifting low frequency and definition.
Further, commence play out in audio file, if user does not make regulation to the tonequality of audio file, described numeralProcessor DSP obtains the moment external voice size information that audio file commences play out, as initial outward sound size dataAs setting value, this moment of simultaneity factor record corresponding audio file tonequality information, as initial tonequality data.
Further, if user adjusts to tonequality, system record adjustment after tonequality information, as initial tonequality numberAccording to digital processing unit DSP obtains corresponding moment outside environmental sounds size information, as initial outward sound size data simultaneouslyAs setting value.
Further, described digital processing unit DSP is by real-time outside environmental sounds size information and initial outward environmentSound size data is compared, if exceeding setting value, described digital processing unit DSP control the balanced device EQ of output module inHigh frequency is lifted, the corresponding volume increasing in tonequality；If conversely, real-time external ambient sound size information is less than initial outwardAmbient sound size data, described digital processing unit DSP controls the balanced device EQ of output module on lifting low frequency and definitionIt is adjusted.
Further, described output module includes the multiple audio amplifiers in power amplifier and multi-channel system.
Further, described audio file is sent to digital processing unit DSP by audio decoder signal.
Further, described loudspeaker is divided into single loudspeaker and twin loudspeaker.
Further, described digital processing unit DSP controls the volume of each audio amplifier in the multi-channel system in output module,Each sound channel loudspeaker is made to be exported with the volume coordinated.
The beneficial effects of the present invention is：The present invention automatically adjusts tonequality according to the sound size of external environment condition, works as the external worldAmbient sound than larger when, the balanced device EQ in tonequality just focuses on medium-high frequency and is lifted, to increase volume；Work as external environmentWhen sound is smaller, the balanced device EQ in tonequality just selects, on lifting low frequency and definition, to make overall tonequality have a ratioLarger lifting.
The change according to environment of intelligent of the present invention adjust tonequality deflection so that user have one reasonableExperience；Relatively more portable, can carry out lifting volume without external voice box；Take into full account the sense of hearing experience of user, compare in environmentWhen noisy, the gain of increase volume and medium-high frequency is not so that user can hear music emphatically；When environment is more quietWait, tonequality is lifted, experience is more preferably.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,And can be practiced according to the content of specification, and in order to the above objects, features and advantages of the present invention can be become apparent fromUnderstandable, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, describe in detail as follows.
Brief description
The structure principle chart that Fig. 1 is adjusted for prior art mobile phone speech.
Fig. 2 is the structure principle chart of the outer playback matter automatic regulating system of mobile phone of the present invention.
Specific embodiment：
For further illustrating that the present invention is to reach technological means and effect that predetermined purpose is taken, below in conjunction with accompanying drawingAnd preferred embodiment, to according to the specific embodiment of playback matter automatic regulating system, knot outside a kind of mobile phone proposed by the present inventionStructure, feature and its effect, describe in detail as follows.
As shown in Fig. 2 a kind of outer playback matter automatic regulating system of mobile phone of the present invention, described automatic regulating system includes：OutwardPortion's voice data acquisition module 10, for gathering the sound of external environment condition, this external voice data acquisition module 10 can adoptMicrophone, microphone can be multiple；Sound modular converter 20, for the analoging sound signal conversion the external environment condition of collectionBecome data signal；Digital processing unit DSP30, the outside environmental sounds number of the external voice data sampling module collection after conversionWord signal controls, judges the size of external voice by software algorithm, and controls audio file output according to external voice sizeTonequality；Output module 40, is conveyed to the different balanced device of loudspeaker the audio file 50 controlling through digital processing unit DSPEQ and gain, thus play the effect automatically adjusting outer playback matter.
Described audio file 50 is sent to digital processing unit DSP30 by 60 signals of audio decoder.
In digital processing unit DSP30, a setting value is preset with to outside environmental sounds size, when external environmental sounds surpassWhen crossing setting value, described digital processing unit DSP controls the balanced device EQ in output module 40 to be lifted in medium-high frequency, increases soundAmount；When external environmental sounds are less than setting value, described digital processing unit DSP controls the balanced device EQ of output module to select carryingRise in low frequency and definition.
Commence play out in audio file, if user does not make regulation to the tonequality of audio file, described digital processing unit DSPObtain the moment external voice size information that audio file commences play out, as initial outward sound size data as settingValue, this moment of simultaneity factor record corresponding audio file tonequality information, as initial tonequality data.
If user adjusts to tonequality, system record adjustment after tonequality information, as initial tonequality data, count simultaneouslyWord processing device DSP obtains corresponding moment outside environmental sounds size information, as initial outward sound size data as settingValue.
Described digital processing unit DSP30 is by real-time outside environmental sounds size information and initial outward ambient sound sizeData is compared, if exceeding setting value, described digital processing unit DSP controls the balanced device EQ of output module to carry out in medium-high frequencyLifting, the corresponding volume increasing in tonequality；If conversely, real-time external ambient sound size information is less than initial outward ambient soundSize data, described digital processing unit DSP controls the balanced device EQ of output module to be adjusted on lifting low frequency and definition.
The present invention can be compensated to various different frequencies by balanced device and modify, that is, in addition extra to these frequency rangesAmplification or decay, to obtain the sound effect that more suits the requirements.
Described output module includes the multiple audio amplifiers in power amplifier and multi-channel system.By power amplifier with respectivelyIndividual audio amplifier is adjusted to output signal.
In multi-channel system in described digital processing unit DSP control output module, the volume of each audio amplifier, makes each soundRoad loudspeaker are exported with the volume coordinated.The part-frequency point of subwoofer and other sound channels also can be adjusted.Simultaneity factor can accurately be countedCalculate each loudspeaker apart from the distance of main LisPos thus the system that adjusts is arranged to the delay of each sound channel.
The present invention can be acquired to the size of environmental sound field and environmental noise using multiple loudspeakers, relies at numeralSoftware algorithm within reason device DSP30, and the size according to environmental externality sound, are given to single loudspeaker or twin loudspeaker are differentBalanced device EQ and gain, thus play the effect automatically adjusting outer playback matter.
The above, only detailed description and the schema of realizing the specific embodiment of the invention of description of the invention description,Unrestricted for illustration, but the feature of the present invention is not limited thereto, and those skilled in the art obviously understand, the institute of the present inventionHave scope should be defined by its scope of the claims, the spirit being defined without departing substantially from appended claims and send outOn the premise of bright scope, the change similar with it of all spirit according to the present invention and the other embodiments implemented, all should be included in thisAmong the protection category of invention.