WO2020063053A1 - 扬声器声道切换结构及电子设备 - Google Patents

扬声器声道切换结构及电子设备 Download PDF

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Publication number
WO2020063053A1
WO2020063053A1 PCT/CN2019/096375 CN2019096375W WO2020063053A1 WO 2020063053 A1 WO2020063053 A1 WO 2020063053A1 CN 2019096375 W CN2019096375 W CN 2019096375W WO 2020063053 A1 WO2020063053 A1 WO 2020063053A1
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analog switch
audio power
speaker
power amplifier
output terminal
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PCT/CN2019/096375
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English (en)
French (fr)
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葛先峰
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上海闻泰信息技术有限公司
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Publication of WO2020063053A1 publication Critical patent/WO2020063053A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/16—Sound input; Sound output

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  • the invention relates to the technical field of audio playback, in particular to a speaker channel switching structure and an electronic device.
  • An object of the present invention is to provide a speaker channel switching structure and an electronic device, which can automatically switch channels and improve the audio output effect.
  • the present invention provides a speaker channel switching structure, including an audio codec, a controller, an analog switch group, at least one audio power amplifier, and at least one speaker;
  • the audio codec includes a left channel output And right channel output;
  • at least one audio power amplifier is connected to the audio codec through the analog switch group;
  • the analog switch group includes at least one analog switch, and each analog switch includes at least one input terminal, output And the control terminal; one input terminal of the analog switch is connected to the left channel output terminal or the right channel output terminal, one output terminal of the analog switch is connected to the input terminal of an audio power amplifier, and the control of the analog switch Is connected to the controller, and the controller is used to switch the gating state of the analog switch; the number of audio power amplifiers and speakers is the same and one-to-one corresponds, and the output end of each audio power amplifier is connected to a corresponding speaker .
  • the analog switch is a single-pole double-throw analog switch and includes two input terminals, one output terminal and one control terminal; the two input terminals of each analog switch are respectively connected to the left channel output terminal and the right channel. Channel output, the output of each analog switch is connected to the input of an audio power amplifier.
  • the number of the analog switch, the audio power amplifier, and the corresponding connected speakers are all one; the controller is configured to switch the output end of the analog switch to the left channel output terminal to switch to the right channel The output end is connected or the output end of the analog switch is connected to the right channel output end to switch to the left channel output end.
  • the analog switch is a double-pole double-throw analog switch and includes four input terminals, two output terminals, and a control terminal; the four input terminals of each analog switch are respectively connected to two left channels. An output terminal and two right channel output terminals. The two output terminals of each analog switch are respectively connected to the input terminals of two audio power amplifiers.
  • the number of the audio power amplifiers is multiple, and at least one input end of the audio power amplifier is directly connected to the left channel output end or the right channel output end.
  • the controller is a microcontroller-based multi-channel controller.
  • the invention also provides an electronic device including the speaker channel switching structure described above.
  • the electronic device is further provided with a gravity sensor and a gyroscope which are electrically connected to the controller.
  • the present invention has the beneficial effect that by adding an analog switch, the gating state of the analog switch is switched by the controller, so as to achieve the effect of switching channels.
  • the user can adjust according to the actual situation, and the operation is flexible and beneficial Improve audio output.
  • FIG. 1 is a structural block diagram of a speaker channel switching structure provided by the present invention.
  • FIG. 2 is a connection structure diagram of a speaker channel switching structure provided by an embodiment of the present invention.
  • FIG. 3 is a connection structure diagram of a speaker channel switching structure provided by another embodiment of the present invention.
  • the present invention provides a speaker channel switching structure including an audio codec 10, a controller 20, an analog switch group 30, at least one audio power amplifier 40, and at least one speaker 50.
  • the audio codec 10 is used to convert the built-in audio signal source of the electronic device into a left channel and a right channel output. Please refer to FIG. 2 together.
  • the audio codec 10 includes a left channel output terminal 11 and a right channel output. ⁇ 12 ⁇ End 12.
  • each audio power amplifier 40 is connected to the audio codec 10 through an analog switch group 30.
  • the analog switch group 30 includes at least one analog switch 31, and each analog switch 31 includes at least one input terminal, output terminal, and control terminal.
  • One input terminal of the analog switch 31 is connected to the left channel output terminal 11 or the right channel output terminal 12.
  • One output terminal of the analog switch 31 is connected to the input terminal of an audio power amplifier 40.
  • the control terminal of the analog switch 31 is connected to the controller 20. Connected.
  • the number of the audio power amplifiers 40 and the speakers 50 are the same and correspond one-to-one, and the output end of each audio power amplifier 40 is connected to a corresponding one of the speakers 50.
  • the audio power amplifier 40 is used to amplify the received smaller left or right channel audio signal, increase its power, and then output.
  • the controller 20 may be a multi-channel controller based on a single-chip microcomputer. The controller 20 is used to switch the strobe state of the analog switch 31.
  • the controller 20 will connect the analog switch 31 of the left channel output terminal 11 or the right channel output terminal 12 An input terminal of is connected to a corresponding output terminal, so that the left channel or the right channel is allocated to an audio power amplifier 40 correspondingly connected to the output terminal of the analog switch 31, and then connected to the audio power amplifier 40 correspondingly.
  • One speaker 50 plays the sound corresponding to the left channel or the right channel, thereby realizing the channel switching.
  • the analog switch 31 is a single-pole double-throw analog switch, that is, the analog switch 31 includes two input terminals, an output terminal, and a control terminal.
  • the two input terminals of each analog switch 31 are respectively connected to the left channel output terminal 11 and the right channel output terminal 12, and the output terminal of each analog switch 31 is connected to the input terminal of an audio power amplifier 40.
  • the controller 20 is configured to use the analog switch 31
  • the output terminal is connected to the left channel output terminal 11 to switch to the right channel output terminal 12 or the output of the analog switch 31 is connected to the right channel output terminal 12 to be connected to the left channel output terminal 11.
  • the channel signal is faulty, for example, the left channel is faulty and the speaker 50 is silent
  • the user can switch the connection to the left channel output terminal 11 to the right channel output terminal 12 through the controller 20, thereby avoiding mono Signal failure speaker 50 is silent.
  • the above-mentioned speaker channel switching structure may be set to have four analog switches 31, four audio power amplifiers 40, and four speakers 50 correspondingly connected, and two analogs are set through the controller 20.
  • Switch 31 turns on the two left-channel output terminals 11 and the other two analog switches 31 turn on the two right-channel output terminals 12, so that the four speakers 50 respectively output two channels, which can make the two channels balanced output.
  • the electronic device also has a user interface. The user can operate the controller 20 through software and adjust it according to his or her own situation, so that the user can customize each speaker 50 to output the left channel sound or the right channel sound or turn it off to achieve the best. User experience.
  • the analog switch 31 may be a double-pole double-throw analog switch, that is, the analog switch 31 includes four input terminals, two output terminals, and a control terminal.
  • the four input terminals of each analog switch 31 are respectively connected to two left channel output terminals 11 and two right channel output terminals 12, and the two output terminals of each analog switch 31 are respectively connected to two audio power amplifier 40 inputs. It is suitable for the case where there are multiple speakers 50 in the system, which can reduce the number of analog switches 31 and improve the convenience and efficiency of channel switching.
  • some audio power amplifiers 40 may also be directly connected to the left channel output terminal 11 or the right channel output terminal of the audio codec 10 12 connections, that is, at least one of the input terminals of the audio power amplifier 40 is directly connected to the left channel output terminal 11 or the right channel output terminal 12, so that some speakers 50 fixedly output the left channel sound or the right channel sound , Can reduce the number of analog switches 31, the operation is simpler, and it is convenient to quickly switch channels.
  • the present invention also provides an electronic device including the above-mentioned speaker channel switching structure.
  • the electronic device may be an electronic device for playing audio files, such as a mobile phone or a tablet computer.
  • the electronic device is further provided with a gravity sensor and a gyroscope which are electrically connected to the controller 20, and the channel can be automatically switched by the controller 20.
  • the gravity sensor is used to detect the tilt angle of the electronic device, and the gyroscope is used to detect the rotation state of the electronic device. The cooperation of the gravity sensor and the gyroscope can determine the actual state of the electronic device, so that the controller 20 automatically Switch each speaker 50 to output the left or right channel.
  • the controller 20 can control the speaker 50 that plays the left channel sound to always correspond to the left ear of the user and The speaker 50 always corresponds to the right ear of the user, ensuring consistency in sound orientation, thereby improving the user experience.

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Stereophonic Arrangements (AREA)
  • Stereophonic System (AREA)

Abstract

一种扬声器声道切换结构，包括音频编解码器(10)、控制器(20)、模拟开关组(30)、至少一个音频功率放大器(40)及扬声器(50)；音频编解码器(10)包括左声道输出端和右声道输出端；其中至少存在一个音频功率放大器(40)通过模拟开关组(30)连接音频编解码器(10)；模拟开关组(30)包括至少一个模拟开关(31)，每个模拟开关(31)包括至少一个的输入端、输出端和控制端；模拟开关(31)的一个输入端连接左声道输出端或右声道输出端，模拟开关(31)的一个输出端与一个音频功率放大器(40)的输入端相连，模拟开关(31)的控制端与控制器(20)相连；音频功率放大器(40)和扬声器(50)的数量相同且一一对应，每个音频功率放大器(40)的输出端与对应的一个扬声器(50)相连。还提供一种电子设备，包括扬声器声道切换结构。

Description

扬声器声道切换结构及电子设备 【技术领域】
本发明涉及音频播放技术领域，尤其涉及一种扬声器声道切换结构及电子设备。
【背景技术】
目前的电子设备一般只有一个或两个扬声器，每个扬声器只能固定地输出一个声道(左声道或右声道)。在这种扬声器声道控制模式下，若电子设备的位置或状态发生改变，固定方式的左声道或右声道输出的声音对用户来说并不是最佳位置，灵活性不足，影响用户体验。尤其是只有一个扬声器时，若单声道信号发生故障时，无法切换到另一个声道，会出现扬声器不发声的情况。鉴于此，实有必要提供一种扬声器声道切换结构及电子设备以克服上述缺陷。
【发明内容】
本发明的目的是提供一种扬声器声道切换结构及电子设备，可自动切换声道，提升音频输出效果。
为了实现上述目的，本发明提供一种扬声器声道切换结构，包括音频编解码器、控制器、模拟开关组、至少一个音频功率放大器以及至少一个扬声器；所述音频编解码器包括左声道输出端和右声道输出端；其 中至少存在一个音频功率放大器通过所述模拟开关组连接音频编解码器；所述模拟开关组包括至少一个模拟开关，每个模拟开关包括至少一个的输入端、输出端和控制端；所述模拟开关的一个输入端连接左声道输出端或右声道输出端，所述模拟开关的一个输出端与一个音频功率放大器的输入端相连，所述模拟开关的控制端与所述控制器相连，所述控制器用于切换模拟开关的选通状态；所述音频功率放大器和扬声器的数量相同且一一对应，每个音频功率放大器的输出端与对应的一个扬声器相连。
在一个优选实施方式中，所述模拟开关为单刀双掷模拟开关且包括两个输入端、一个输出端和一个控制端；每个模拟开关的两个输入端分别连接左声道输出端和右声道输出端，每个模拟开关的输出端和一个音频功率放大器的输入端连接。
在一个优选实施方式中，所述模拟开关、音频功率放大器和对应连接的扬声器的数量均为一个；所述控制器用于将模拟开关的输出端与左声道输出端连通切换至与右声道输出端连通或者将模拟开关的输出端与右声道输出端连通切换至与左声道输出端连通。
在一个优选实施方式中，所述模拟开关为双刀双掷模拟开关且包括四个输入端、两个输出端和一个控制端；每个模拟开关的四个输入端分别连接两个左声道输出端和两个右声道输出端，每个模拟开关的两个输出端分别连接两个音频功率放大器的输入端。
在一个优选实施方式中，所述音频功率放大器的数量为多个，其中至少存在一个音频功率放大器的输入端直接与左声道输出端或右声道 输出端相连。
在一个优选实施方式中，所述控制器为基于单片机的多通道控制器。
本发明还提供一种电子设备，包括上述的扬声器声道切换结构。
在一个优选实施方式中，所述电子设备还设置有与控制器电性连接的重力传感器和陀螺仪。
与现有技术相比，本发明的有益效果在于：通过增加模拟开关，由控制器切换模拟开关的选通状态，从而达到切换声道的效果，用户可根据实际情况调整，操作灵活，有利于提升音频输出效果。
为使发明的上述目的、特征和优点能更明显易懂，下文特举本发明较佳实施例，并配合所附附图，作详细说明如下。
【附图说明】
为了更清楚地说明本发明实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，应当理解，以下附图仅示出了本发明的某些实施例，因此不应被看作是对范围的限定，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他相关的附图。
图1为本发明提供的扬声器声道切换结构的结构框图；
图2为本发明一实施例提供的扬声器声道切换结构的连接结构图；
图3为本发明另一实施例提供的扬声器声道切换结构的连接结构图。
【具体实施方式】
为了使本发明的目的、技术方案和有益技术效果更加清晰明白，以下结合附图和具体实施方式，对本发明进行进一步详细说明。应当理解的是，本说明书中描述的具体实施方式仅仅是为了解释本发明，并不是为了限定本发明。
请参阅图1，本发明提供一种扬声器声道切换结构，包括音频编解码器10、控制器20、模拟开关组30、至少一个音频功率放大器40以及至少一个扬声器50。音频编解码器10用于将电子设备内置的音频信号源转换为左声道和右声道输出，请一并参阅图2，音频编解码器10包括左声道输出端11和右声道输出端12。本实施例中，每个音频功率放大器40均通过模拟开关组30连接音频编解码器10。
模拟开关组30包括至少一个模拟开关31，每个模拟开关31包括至少一个的输入端、输出端和控制端。模拟开关31的一个输入端连接左声道输出端11或右声道输出端12，模拟开关31的一个输出端与一个音频功率放大器40的输入端相连，模拟开关31的控制端与控制器20相连。
具体地，音频功率放大器40和扬声器50的数量相同且一一对应，每个音频功率放大器40的输出端与对应的一个扬声器50相连。音频功率放大器40用于将接收的较小的左声道或右声道的音频信号进行放大，使其功率增加然后输出。控制器20可以是基于单片机的多通道控制器，控制器20用于切换模拟开关31的选通状态，例如控制器20将连接左声道输出端11或右声道输出端12的模拟开关31的一个输入端与对应的一个输出端连通，从而将左声道或右声道分配到与该模拟开关31的 输出端对应相连的一个音频功率放大器40，再通过与该音频功率放大器40对应相连的一个扬声器50播放左声道或右声道对应的声音，从而实现声道的切换。
在一个实施例中，如图2所示，模拟开关31为单刀双掷模拟开关，即，模拟开关31包括两个输入端、一个输出端和一个控制端。每个模拟开关31的两个输入端分别连接左声道输出端11和右声道输出端12，每个模拟开关31的输出端和一个音频功率放大器40的输入端连接。
当电子设备为单声道系统时，即上述的扬声器声道切换结构设有模拟开关31、音频功率放大器40和对应连接的扬声器50的数量均为一个，控制器20用于将模拟开关31的输出端与左声道输出端11连通切换至与右声道输出端12连通或者将模拟开关31的输出端与右声道输出端12连通切换至与左声道输出端11连通，若出现单声道信号故障例如左声道故障导致扬声器50无声时，用户可通过控制器20将与左声道输出端11的连接断开切换至与右声道输出端12连接，从而能避免单声道信号故障扬声器50无声的问题。
若电子设备为双声道系统时，上述的扬声器声道切换结构可设置为具有四个模拟开关31、四个音频功率放大器40及对应连接的四个扬声器50，通过控制器20设置两个模拟开关31接通两个左声道输出端11、另外两个模拟开关31接通两个右声道输出端12，从而使四个扬声器50分别输出两个声道，可使两声道平衡输出，避免出现声音响度低的问题。通常电子设备还具有用户界面，用户可通过软件操作控制器20，根据自身情况来调整，让用户自定义每个扬声器50输出左声道的声音或右声 道的声音或者关闭，从而达到最佳的用户体验。
请参阅图3，在另一个实施例中，模拟开关31可以为双刀双掷模拟开关，即，模拟开关31包括四个输入端、两个输出端和一个控制端。每个模拟开关31的四个输入端分别连接两个左声道输出端11和两个右声道输出端12，每个模拟开关31的两个输出端分别连接两个音频功率放大器40的输入端，适用于系统中具有多个扬声器50的情况，可减少模拟开关31的数量，提高声道切换的便利性和效率。
需要说明的是，在其他实施例中，当音频功率放大器40的数量为多个时，部分音频功率放大器40也可直接与音频编解码器10的左声道输出端11或右声道输出端12连接，即其中至少存在一个音频功率放大器40的输入端直接与左声道输出端11或右声道输出端12相连，从而使得部分扬声器50固定输出左声道的声音或右声道的声音，可减少模拟开关31的数量，操作更简便，便于快速切换声道。
本发明还提供一种电子设备，包括上述的扬声器声道切换结构，该电子设备可以是手机、平板电脑等用于播放音频文件的电子设备。进一步地，该电子设备还设置有与控制器20电性连接的重力传感器和陀螺仪，可以通过控制器20自动切换声道。重力传感器用于检测电子设备的倾斜角度，陀螺仪用于检测电子设备的旋转状态，重力传感器和陀螺仪配合可判断电子设备所处的实际状态，使控制器20根据扬声器50安装的位置情况自动切换每个扬声器50输出左声道或者右声道，例如用户在使用电子设备看电影时，控制器20可控制播放左声道声音的扬声器50始终对应用户的左耳、播放右声道声音的扬声器50始终对应用户 的右耳，保证了声音方位的一致性，从而提升了用户体验。
本发明并不仅仅限于说明书和实施方式中所描述，因此对于熟悉领域的人员而言可容易地实现另外的优点和修改，故在不背离权利要求及等同范围所限定的一般概念的精神和范围的情况下，本发明并不限于特定的细节、代表性的设备和这里示出与描述的图示示例。

Claims (8)

  1. 一种扬声器声道切换结构，其特征在于，包括音频编解码器、控制器、模拟开关组、至少一个音频功率放大器以及至少一个扬声器；所述音频编解码器包括左声道输出端和右声道输出端；其中至少存在一个音频功率放大器通过所述模拟开关组连接音频编解码器；所述模拟开关组包括至少一个模拟开关，每个模拟开关包括至少一个的输入端、输出端和控制端；所述模拟开关的一个输入端连接左声道输出端或右声道输出端，所述模拟开关的一个输出端与一个音频功率放大器的输入端相连，所述模拟开关的控制端与所述控制器相连，所述控制器用于切换模拟开关的选通状态；所述音频功率放大器和扬声器的数量相同且一一对应，每个音频功率放大器的输出端与对应的一个扬声器相连。
  2. 根据权利要求1所述的扬声器声道切换结构，其特征在于，所述模拟开关为单刀双掷模拟开关且包括两个输入端、一个输出端和一个控制端；每个模拟开关的两个输入端分别连接左声道输出端和右声道输出端，每个模拟开关的输出端和一个音频功率放大器的输入端连接。
  3. 根据权利要求2所述的扬声器声道切换结构，其特征在于，所述模拟开关、音频功率放大器和对应连接的扬声器的数量均为一个；所述控制器用于将模拟开关的输出端与左声道输出端连通切换至与右声道输出端连通或者将模拟开关的输出端与右声道输出端连通切换至与左声道输出端连通。
  4. 根据权利要求1所述的扬声器声道切换结构，其特征在于，所 述模拟开关为双刀双掷模拟开关且包括四个输入端、两个输出端和一个控制端；每个模拟开关的四个输入端分别连接两个左声道输出端和两个右声道输出端，每个模拟开关的两个输出端分别连接两个音频功率放大器的输入端。
  5. 根据权利要求1所述的扬声器声道切换结构，其特征在于，所述音频功率放大器的数量为多个，其中至少存在一个音频功率放大器的输入端直接与左声道输出端或右声道输出端相连。
  6. 根据权利要求1所述的扬声器声道切换结构，其特征在于，所述控制器为基于单片机的多通道控制器。
  7. 一种电子设备，其特征在于，包括如权利要求1-6中任一项所述的扬声器声道切换结构。
  8. 根据权利要求7所述的电子设备，其特征在于，所述电子设备还设置有与控制器电性连接的重力传感器和陀螺仪。
PCT/CN2019/096375 2018-09-27 2019-07-17 扬声器声道切换结构及电子设备 WO2020063053A1 (zh)

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