【技术领域】【Technical field】
本发明涉及音响领域，具体涉及用2.0声道系统实现多声道效果的音箱和方法。The invention relates to the field of audio, in particular to a sound box and a method for realizing multi-channel effects by using a 2.0-channel system.
【背景技术】【Background technique】
随着社会及微电子技术的发展，人们的生活水平越来越高，各种智能设备越来越多。手机，平板，大屏电视已进入千家万户。LED大屏电视连接网在线的影视资源非常丰富，网络上拥有各类多声道的影片资源，因此人们对音响设备或者带有音响功能的平板电视播放系统的要求越来越高。目前平板电视的小型2.0或2.1环绕声系统，包括低音炮主机、左音箱、右音箱和低音音箱，左音箱、右音箱和低音音箱分别与低音炮主机有线连接,如图1。虽然2.0或2.1环绕音响可以一定程度上满足用户的需求，但是2.0声道立体声或在2.1声道基础上发展起来的虚拟环绕声和多声道环绕音响(如：DTS或杜比音轨的5.1或6.1及7.1多声道环绕音响)相比，其效果远远达不到多声道环绕音响的效果。With the development of society and microelectronics technology, people's living standards are getting higher and higher, and there are more and more smart devices. Mobile phones, tablets, and large-screen TVs have entered thousands of households. LED large-screen TV connection network online video resources are very rich, and there are various multi-channel video resources on the network, so people have higher and higher requirements for audio equipment or flat-panel TV playback systems with audio functions. At present, the small 2.0 or 2.1 surround sound system of a flat-panel TV includes a subwoofer host, a left speaker, a right speaker, and a subwoofer. Although 2.0 or 2.1 surround sound can meet the needs of users to a certain extent, 2.0 channel stereo or virtual surround sound and multi-channel surround sound developed on the basis of 2.1 channel (such as: 5.1 of DTS or Dolby audio track) Or 6.1 and 7.1 multi-channel surround sound), its effect is far less than the effect of multi-channel surround sound.
现有的多声道解码环绕音响系统，如图2,例如5.1声道(包括左前置音箱，右前置音箱，中置音箱，左环绕音箱，右环绕音箱和低音音箱)环绕音响中，一般将解码功放主机放置在前方，同时解码功放主机与音箱连接，解码功放主机和前方的3组音箱(左、中、右)都通过有线连接，左、右环绕音箱置于主放大器后上方，低音音箱由于体积较大，如采用有线连接，其摆放和布线就显得比较困难。虽然多声道环绕音响，如5.1环绕音响可以实现功能强大的环绕效果。但是，其成本高、安装繁琐，占用空间大，不方便移动。Existing multi-channel decoding surround sound system, as shown in Figure 2, for example, in the 5.1-channel (comprising left front speaker, right front speaker, center speaker, left surround speaker, right surround speaker and bass speaker) surround sound, Generally, the main unit of the decoding power amplifier is placed in the front, and the main unit of the decoding power amplifier is connected to the speakers at the same time. Due to the large size of the subwoofer speaker, if a wired connection is used, its placement and wiring are more difficult. Although multi-channel surround sound, such as 5.1 surround sound, can achieve powerful surround effects. However, its cost is high, its installation is cumbersome, it takes up a lot of space, and it is inconvenient to move.
【发明内容】【Content of invention】
有鉴于此，本发明提供一种利用二声道音箱，能实现多声道的音效效果。In view of this, the present invention provides a two-channel sound box capable of realizing multi-channel sound effects.
本发明采用如下技术方案，构造将多声道缩混成无线两声道的音箱，包括音效处理主机、左音箱、右音箱,多声道转两声道单元和音频输出单元,音效处理主机内设有多声道转两声道单元,左音箱和右音箱内均设有音频输出单元；多声道转两声道单元，用于将两声道以上的音频信号转换成两声道音频信号，并通过无线方式发送给两声道音频输出单元；音频输出单元，用于将接收到的两声道音频信号进行处理和放大后输出给左音箱和右音箱的扬声器输出。The present invention adopts the following technical scheme to construct a speaker that downmixes multi-channel into wireless two-channel, including a sound effect processing host, a left speaker, a right speaker, a multi-channel to two-channel unit, and an audio output unit. Multi-channel to two-channel unit, the left speaker and the right speaker are equipped with audio output units; the multi-channel to two-channel unit is used to convert more than two-channel audio signals into two-channel audio signals, And wirelessly send to the two-channel audio output unit; the audio output unit is used to process and amplify the received two-channel audio signal and output it to the speaker output of the left speaker and the right speaker.
优选的，所述多声道转两声道单元，包括第一主控模块和第一无线发送模块；Preferably, the multi-channel to two-channel unit includes a first main control module and a first wireless sending module;
第一主控模块，用于将接收到的源码音频信号解码成对应的多声道数字音频信号后，然后处理成两声道数字音频信号，再通过无线方式输出；The first main control module is used to decode the received source audio signal into a corresponding multi-channel digital audio signal, then process it into a two-channel digital audio signal, and then output it wirelessly;
第一无线发送模块，用于将两声道数字音频信号通过无线方式输出给所述音频输出单元。The first wireless sending module is used to wirelessly output the two-channel digital audio signal to the audio output unit.
优选的，所述多声道转两声道单元，还包括第一音频输出模块；Preferably, the multi-channel to two-channel unit further includes a first audio output module;
第一音频输出模块，将来自第一主控模块的两声道数字音频信号转换成模拟音频信号后通过3.5mm耳机线路输出，其输入端连接第一主控模块，其输出端连接3.5mm耳机线路输出。The first audio output module converts the two-channel digital audio signal from the first main control module into an analog audio signal and then outputs it through a 3.5mm headphone line, its input end is connected to the first main control module, and its output end is connected to a 3.5mm earphone line out.
优选的，所述音频输出单元，包括第二无线接收模块，第二主控模块，第二音频输出模块；Preferably, the audio output unit includes a second wireless receiving module, a second main control module, and a second audio output module;
第二无线接收模块，接收来自第一无线通信模块的两声道数字音频信号后输出给第二主控模块；The second wireless receiving module receives the two-channel digital audio signal from the first wireless communication module and outputs it to the second main control module;
第二主控模块，将两声道数字音频信号进行音效处理后再转换成两声道模拟音频信号，然后输出给第二音频输出模块；The second main control module converts the two-channel digital audio signal into a two-channel analog audio signal after performing sound effect processing, and then outputs it to the second audio output module;
第二音频输出模块；用于将两声道模拟音频信号放大滤波后通过扬声器输出，其输入端连接第二主控模块，其输出端连接左音箱/右音箱中的扬声器。The second audio output module is used to amplify and filter the two-channel analog audio signal and then output it through the speaker. Its input end is connected to the second main control module, and its output end is connected to the speaker in the left speaker/right speaker.
本发明还提供一种利用上述音箱将多声道缩混成无线两声道的处理方法，它包括如下步骤：The present invention also provides a processing method for downmixing multi-channel into wireless two-channel by using the above-mentioned sound box, which includes the following steps:
S1：源码音频信号输入到第一主控模块被解码成对应的标准多声道数字音频信号；S1: The source code audio signal is input to the first main control module to be decoded into a corresponding standard multi-channel digital audio signal;
S2：第一主控模块将多声道数字音频信号处理成两声道数字音频信号；S2: the first main control module processes the multi-channel digital audio signal into a two-channel digital audio signal;
S3：两声道数字音频信号通过无线方式输出给音频输出单元。S3: The two-channel digital audio signal is output to the audio output unit through wireless.
优选的，它还包括，Preferably, it also includes,
S4:音频输出单元将两声道数字音频信号转换成模拟信号再放大后输出的步骤。S4: a step in which the audio output unit converts the two-channel digital audio signal into an analog signal, amplifies it, and outputs it.
本发明的有益技术效果是：利用已有的两声道音箱实现了多声道的环绕声效果，且可以兼容以前的有线两声道系统，简化布线，节约空间，成本低。The beneficial technical effect of the present invention is: the existing two-channel sound box is used to realize the multi-channel surround sound effect, and it can be compatible with the previous wired two-channel system, simplifying wiring, saving space and low cost.
【附图说明】【Description of drawings】
图12.1声道音箱组成框图；Figure 12. Block diagram of 1-channel speakers;
图25.1声道音箱组成框图；Figure 25. Block diagram of 1-channel speakers;
图3实施例一中的将多声道缩混成无线两声道的音箱硬件组成框图；In the first embodiment of Fig. 3, multi-channel downmixing is a block diagram of the sound box hardware composition of wireless two-channel;
图4实施例一中的第一D/A转换电路的电路原理图；The circuit schematic diagram of the first D/A conversion circuit in the first embodiment of Fig. 4;
图5实施例一中的第一放大电路的电路原理图；The schematic circuit diagram of the first amplifying circuit in Fig. 5 embodiment one;
图6实施例一中的第一充电管理电路的电路原理图；Fig. 6 is a schematic circuit diagram of the first charging management circuit in Embodiment 1;
图7实施例一中的第一稳压电路的电路原理图；The circuit schematic diagram of the first voltage stabilizing circuit in Fig. 7 embodiment one;
图8实施例一中的第二音频输出模块的电路原理图；The schematic circuit diagram of the second audio output module in the first embodiment of FIG. 8;
图9实施例一中的第二充电管理电路的电路原理图；FIG. 9 is a schematic circuit diagram of the second charging management circuit in Embodiment 1;
图10实施例一中的第二稳压电路的电路原理图。FIG. 10 is a schematic circuit diagram of the second voltage stabilizing circuit in the first embodiment.
【具体实施方式】【detailed description】
为了使本专利的技术方案和技术效果更加清楚，下面结合附图和实施例对本专利的具体实施方式进行详细描述。In order to make the technical scheme and technical effect of this patent clearer, the specific implementation manner of this patent will be described in detail below in conjunction with the accompanying drawings and examples.
实施例一：Embodiment one:
如图3，本实施例中的将多声道缩混成无线两声道的音箱,包括音效处理主机、左音箱、右音箱,多声道转两声道单元,音效处理主机内设有多声道转两声道单元,左音箱和右音箱内均设有音频输出单元。多声道转两声道单元，用于将两声道以上的声道音频信号转换成两声道音频信号，并通过无线方式发送给音频输出单元。无线音箱单元用于将接收到的两声道音频信号进行处理和放大后输出给左音箱和右音箱中的扬声器输出。As shown in Figure 3, in this embodiment, multi-channel downmixing into a wireless two-channel speaker includes a sound effect processing host, a left speaker, a right speaker, and a multi-channel to two-channel unit. channel to two-channel unit, and the left speaker and the right speaker are equipped with audio output units. The multi-channel to two-channel unit is used to convert more than two-channel audio signals into two-channel audio signals and send them to the audio output unit in a wireless manner. The wireless speaker unit is used to process and amplify the received two-channel audio signal and output it to the speaker output in the left speaker and the right speaker.
多声道转两声道单元，包括第一主控模块，第一无线发送模块，第一无线接收模块,第一音频输出模块，第一电源模块和第一存储模块。The multi-channel to two-channel unit includes a first main control module, a first wireless sending module, a first wireless receiving module, a first audio output module, a first power supply module and a first storage module.
第一主控模块，用于将接收到的源码音频信号解码成对应的多声道数字音频信号后，然后处理成两声道数字音频信号，再通过有线和/或者无线方式输出。两声道数字音频信号可以是2.0声道音频信号或者2.1声道音频信号。本实施例中的第一主控模块采用国科微电子型号为GK1107的集成电路，与其连接的用于接收源码音频信号的接口有COXA(同轴信号输入接口，用于接收DVD等音源设备输出的音频信号)、OPT(光纤信号输入接口，用于接收带有光纤输出接口设备输出的音频信号)、AUX(模拟音频输入接口，用于接收各种设备的模拟音频信号)等接口，以便能接收各种设备的源码音频信号。当第一主控模块接收到的是DTS5.1/杜比5.1/PCM5.1源码音频信号时，则解码成5.1声道数字信号，然后再处理成2.0声道或者2.1声道数字音频信号；如第一主控模块收到的是DTS6.1/杜比6.1/PCM6.1源码音频信号，则解码成6.1声道数字信号，然后再处理成2.0声道或者2.1声道数字音频信号。The first main control module is used to decode the received source code audio signal into a corresponding multi-channel digital audio signal, then process it into a two-channel digital audio signal, and then output it in a wired and/or wireless manner. The two-channel digital audio signal may be a 2.0-channel audio signal or a 2.1-channel audio signal. The first main control module in this embodiment adopts the integrated circuit of GK1107 model of Guoke Microelectronics, and the interface used to receive the source code audio signal connected with it has COXA (coaxial signal input interface, used to receive the output of audio source equipment such as DVD) audio signal), OPT (optical fiber signal input interface, used to receive audio signals output by equipment with optical fiber output interface), AUX (analog audio input interface, used to receive analog audio signals from various devices) and other interfaces, in order to be able to Receive source audio signals from various devices. When the first main control module receives the DTS5.1/Dolby 5.1/PCM5.1 source audio signal, it decodes it into a 5.1-channel digital signal, and then processes it into a 2.0-channel or 2.1-channel digital audio signal; If the first main control module receives the DTS6.1/Dolby 6.1/PCM6.1 source code audio signal, it will be decoded into a 6.1-channel digital signal, and then processed into a 2.0-channel or 2.1-channel digital audio signal.
第一无线发送模块，用于将两声道数字音频信号通过无线方式输出给音频输出单元，其输入端连接第一主控模块。本实施例中的第一无线发送模块采用上海澜起型号为MWI042A的WIFI模块。The first wireless sending module is used to wirelessly output the two-channel digital audio signal to the audio output unit, and its input terminal is connected to the first main control module. The first wireless sending module in this embodiment adopts the WIFI module of Shanghai Montage model MWI042A.
第一无线接收模块，用于接收来自其他设备的无线音频信号,并输出给第一主控模块；本发明施例中采用海澜起型号为MWI042A的WIFI模块接收来自如手机,IPAD等智能设备的无线音频信号。第一无线接收模块和第一主控模块的组合适用有线和无线信号输入，提高了该音箱系统的兼容性。The first wireless receiving module is used to receive wireless audio signals from other devices and output them to the first main control module; in the embodiment of the present invention, the WIFI module of Heilanqi model MWI042A is used to receive audio signals from smart devices such as mobile phones and IPADs. wireless audio signal. The combination of the first wireless receiving module and the first main control module is suitable for wired and wireless signal input, which improves the compatibility of the speaker system.
第一音频输出模块，将两声道数字音频信号转换成模拟音频信号后通过3.5mm耳机线路输出，其输入端连接第一主控模块，其输出端连接3.5mm耳机线路输出；第一音频输出模块包括第一D/A转换电路和第一放大电路。第一D/A转换电路用于将两声道数字音频信号转换成模拟音频信号后输出给第一放大电路，其原理图如图4采用型号为CS4334/NC的典型应用电路。第一放大电路将模拟音频信号放大后输出给3.5mm耳机线路输出，其原理图如图5采用型号为MAX97220B的典型应用电路，其输出端可以是RCA接口或3.5mm耳机接口。以便兼容传统的2.0或者2.1有线音响系统，使得音效处理主机可以和左音箱、右音箱连接。The first audio output module converts the two-channel digital audio signal into an analog audio signal and then outputs it through a 3.5mm headphone line, its input end is connected to the first main control module, and its output end is connected to the 3.5mm headphone line output; the first audio output The module includes a first D/A conversion circuit and a first amplification circuit. The first D/A conversion circuit is used to convert the two-channel digital audio signal into an analog audio signal and then output it to the first amplifying circuit. Its schematic diagram is shown in Figure 4, using a typical application circuit of model CS4334/NC. The first amplifying circuit amplifies the analog audio signal and outputs it to the 3.5mm headphone line output. Its schematic diagram is shown in Figure 5. A typical application circuit of model MAX97220B is used, and its output terminal can be an RCA interface or a 3.5mm headphone interface. In order to be compatible with the traditional 2.0 or 2.1 wired audio system, the sound processing host can be connected with the left speaker and the right speaker.
第一电源模块，用于对可充电电池的充电管理以及将可充电电池输出的电压变换成其他模块所需要的电压，其电压输出端连接其他模块的电源脚。第一电源模块包括第一充电源管理电路和第一稳压电路。第一充电管理电路用于电池的充电管理，如图6，采用型号为CG4056的典型应用电路，CG4056具有防过压，过流等功能。第一稳压电路电路原理图如图7，电池输出电压经BL9240稳压输出5V电压，5V电压再经BL9309稳压成3.3V电压，3.3V电压再经BL8026稳压成1.2V电压。The first power supply module is used for charging management of the rechargeable battery and converting the output voltage of the rechargeable battery into the voltage required by other modules, and its voltage output terminal is connected to the power supply pins of other modules. The first power module includes a first charging source management circuit and a first voltage stabilizing circuit. The first charging management circuit is used for charging management of the battery, as shown in Figure 6, a typical application circuit of the model CG4056 is used, and the CG4056 has functions such as preventing overvoltage and overcurrent. The schematic diagram of the first voltage regulator circuit is shown in Figure 7. The output voltage of the battery is regulated by BL9240 to output 5V voltage. The 5V voltage is then regulated by BL9309 to 3.3V voltage, and the 3.3V voltage is then regulated by BL8026 to 1.2V voltage.
第一存储模块，用于存储第一主控模块处理音频信号过程中的各种中间音频数据，其与第一主控模块连接，可以选取现有技术中的RAM和/或ROM和/或Flash。The first storage module is used to store various intermediate audio data in the process of processing the audio signal by the first main control module, which is connected with the first main control module, and RAM and/or ROM and/or Flash in the prior art can be selected .
音频输出单元，包括第二无线接收模块，第二主控模块，第二音频输出模块，第二电源模块和第二存储模块。The audio output unit includes a second wireless receiving module, a second main control module, a second audio output module, a second power supply module and a second storage module.
第二无线接收模块，接收来自第一无线发送模块的两声道数字音频信号后输出给第二主控模块，其输出端连接第二主控模块。其采用和第一无线接收模块相同型号的集成模块。The second wireless receiving module receives the two-channel digital audio signal from the first wireless sending module and outputs it to the second main control module, and its output terminal is connected to the second main control module. It adopts an integrated module of the same type as the first wireless receiving module.
第二主控模块，将两声道数字音频信号进行音效处理后再转换成两声道模拟音频信号，然后输出给第二音频输出模块。本实施例中的第二主控模块采用型号为NPCA110B的集成电路。The second main control module converts the two-channel digital audio signal into a two-channel analog audio signal after performing sound effect processing, and then outputs it to the second audio output module. The second main control module in this embodiment adopts an integrated circuit modeled as NPCA110B.
第二音频输出模块，用于将两声道模拟音频信号放大滤波后通过扬声器输出，其输入端连接第二主控模块，其输出端连接左音箱/右音箱中的扬声器。第二音频输出模块包括第二放大电路和滤波电路。第二放大电路用于将模拟两声道音频信号放大后输出给滤波电路，其输入端连接第二主控模块，其输出端连接滤波电路；图8是第二音频输出模块的原理图，CSC3110完成信号放大功能，C1和R5完成低频滤波，TW接高音喇叭，L3完成高频滤波,SW接低音喇叭。The second audio output module is used to amplify and filter the two-channel analog audio signal and output it through the speaker, its input end is connected to the second main control module, and its output end is connected to the speaker in the left speaker/right speaker. The second audio output module includes a second amplification circuit and a filter circuit. The second amplifying circuit is used to amplify the analog two-channel audio signal and output it to the filter circuit, its input terminal is connected to the second main control module, and its output terminal is connected to the filter circuit; Figure 8 is a schematic diagram of the second audio output module, CSC3110 Complete the signal amplification function, C1 and R5 complete the low-frequency filtering, TW connects to the tweeter, L3 completes the high-frequency filtering, and SW connects to the woofer.
第二电源模块，用于对可充电电池的充电管理以及将可充电电池输出的电压变换成其他模块所需要的电压，其电压输出端连接其他模块的电源脚。第而电源模块包括第二充电管理电路和第二稳压电路。第二充电管理电路用于电池的充电管理，如图9，采用型号为LM3481的典型应用电路。第二稳压电路电路原理图如图10，电池输出电压经AOZ1284稳压输出3.3V电压。The second power supply module is used for charging management of the rechargeable battery and converting the output voltage of the rechargeable battery into the voltage required by other modules, and its voltage output terminal is connected to the power supply pins of other modules. The second power module includes a second charging management circuit and a second voltage stabilizing circuit. The second charge management circuit is used for charge management of the battery, as shown in Figure 9, a typical application circuit of model LM3481 is used. The schematic diagram of the second voltage stabilizing circuit is shown in Figure 10. The output voltage of the battery is regulated by AOZ1284 to output 3.3V voltage.
第二存储模块，用于存储第二主控模块处理音频信号过程中的各种中间音频数据，其与第一主控模块连接，可以选取现有技术中的RAM和/或ROM和/或Flash。The second storage module is used to store various intermediate audio data in the process of audio signal processing by the second main control module, which is connected with the first main control module, and RAM and/or ROM and/or Flash in the prior art can be selected .
本实施例中的多声道缩混成无线两声道的音箱的工作原理如下：The working principle of the multi-channel downmixing into wireless two-channel sound box in the present embodiment is as follows:
S1:源码音频信号输入到第一主控模块被解码成对应的标准多声道数字音频信号；S1: the source code audio signal is input to the first main control module to be decoded into a corresponding standard multi-channel digital audio signal;
S2:第一主控模块将多声道数字音频信号处理成数字音频信号；S2: the first main control module processes the multi-channel digital audio signal into a digital audio signal;
S3:两声道数字音频信号通过无线方式输出给音频输出单元；S3: The two-channel digital audio signal is output to the audio output unit through wireless mode;
S4:音频输出单元将两声道数字音频信号转换成模拟信号再放大后输出。S4: The audio output unit converts the two-channel digital audio signal into an analog signal, amplifies it, and outputs it.
下面以6.1声道为例说明其工作过程The following takes 6.1 channel as an example to illustrate its working process
经过解码后的6.1声道信号使用信号分配及虚拟原理缩混成2..0声道，然后通过无线音频传输技术，即能达到现有的多声道音响6.1多声道环绕音响的播放效果。The decoded 6.1-channel signal is down-mixed into 2..0 channels using signal distribution and virtual principles, and then through wireless audio transmission technology, it can achieve the playback effect of the existing multi-channel audio 6.1 multi-channel surround sound.
将解码出来的中置声道信号依据2路立体声声像定位方法虚拟出一个中置声道。The decoded center channel signal is virtualized into a center channel according to the 2-way stereo sound image localization method.
将解码出来的左环绕信号和右环绕信号依据2路立体声声像定位后中置声道。Position the rear center channel of the decoded left surround signal and right surround signal according to the 2-way stereo image.
依据声像扩展方法分别虚拟出一个左环绕声道和一个右环绕声。A left surround sound channel and a right surround sound are respectively virtualized according to the sound image expansion method.
音箱低音处理方面，通过MaxxBass算法经DSP处理后输出虚拟低音，MaxxBass虚拟低音处理算法是先进的一种心理声学低音扩展技术，用来解决扬声器设计中最为棘手的问题；没有大的扬声器和功放就不能再现足够低的低音频率。MaxxBass虚拟低音处理算法是利用了已经得到证明了的基频丢失现象来使听众能听到在扬声器物理限制以下的最多1.5个八度的低音。它并没有违反物理规律，只是运用了与真实声音等同的心理错觉来使它听起来像而已。由此种方法产生的低频重放效果通透而不含糊、丰满而不单薄。而且对扬声器尺寸、箱体容积和喇叭材料的要求大幅度降低，只需更小口径的扬声器单元就可以听到更低沉、更具魅力的低音。是这本发明的能让两个音箱发出低频声的特有的技术处理，使个两音箱低音增加声场效果；更好的虚似了低音的声场效果。In terms of speaker bass processing, the virtual bass is output after DSP processing through the MaxxBass algorithm. The MaxxBass virtual bass processing algorithm is an advanced psychoacoustic bass extension technology, which is used to solve the most difficult problem in speaker design; Cannot reproduce low enough bass frequencies. The MaxxBass virtual bass processing algorithm exploits the proven loss of fundamental frequency to allow the listener to hear bass up to 1.5 octaves below the physical limitations of the speakers. It doesn't violate the laws of physics, it just uses the same psychological illusion as the real sound to make it sound like it. The low-frequency reproduction effect produced by this method is transparent but not vague, full but not thin. Moreover, the requirements for speaker size, box volume and speaker material are greatly reduced, and only a smaller caliber speaker unit can be used to hear deeper and more attractive bass. It is the unique technical processing of the present invention that allows the two speakers to emit low-frequency sound, so that the bass of the two speakers increases the sound field effect; the sound field effect of the bass is better virtualized.
以上所述仅为本专利的优选实施例而已，并不用于限制本专利，对于本领域的技术人员来说，本专利可以有各种更改和变化。凡在本专利的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本专利的保护范围之内。The above descriptions are only preferred embodiments of this patent, and are not intended to limit this patent. For those skilled in the art, this patent may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this patent shall be included within the scope of protection of this patent.
| Application Number | Priority Date | Filing Date | Title |
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| CN201610305091.9ACN105812986A (en) | 2016-05-09 | 2016-05-09 | Speaker and processing method for downmixing multi-channel into wireless two-channel |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610305091.9ACN105812986A (en) | 2016-05-09 | 2016-05-09 | Speaker and processing method for downmixing multi-channel into wireless two-channel |
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| CN105812986Atrue CN105812986A (en) | 2016-07-27 |
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| CN201610305091.9APendingCN105812986A (en) | 2016-05-09 | 2016-05-09 | Speaker and processing method for downmixing multi-channel into wireless two-channel |
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