技术领域technical field
本实用新型涉及电声转换技术，更具体的，涉及一种主动降噪耳机。The utility model relates to electroacoustic conversion technology, more specifically, relates to an active noise reduction earphone.
背景技术Background technique
主动降噪耳机是在耳机内设置侦测噪声的麦克风并且在耳机线控或者耳机内加入降噪处理电路，通过降噪处理电路产生与噪声相等的反相声波，从而中和、抵消外界噪音来达到主动降噪的效果。现有的主动降噪耳机需要配置充电电池，为降噪电路设置人为手动开关，不够智能化。Active noise-cancelling earphones are equipped with a microphone for detecting noise in the earphone and a noise-reduction processing circuit is added to the earphone wire control or the earphone, and the anti-phase sound wave equal to the noise is generated by the noise-reduction processing circuit to neutralize and cancel the external noise. To achieve the effect of active noise reduction. The existing active noise reduction earphones need to be equipped with a rechargeable battery, and a manual switch is provided for the noise reduction circuit, which is not intelligent enough.
实用新型内容Utility model content
本实用新型的目的是提供一种用于自动开启/关闭主动降噪耳机的降噪功能的技术方案。The purpose of the utility model is to provide a technical solution for automatically turning on/off the noise reduction function of the active noise reduction earphone.
根据本实用新型的一个方面，提供一种主动降噪耳机，包括耳机主体和第一耳机控制盒；所述耳机主体包括外壳和设置于外壳内的喇叭和噪声侦测麦克风；所述外壳包括互相结合的前盖和后盖，所述前盖上设有和大地构成第一电容的第一金属网；所述第一耳机控制盒的内部设有第一PCBA板，所述第一PCBA板上设有第一容值检测电路、控制器、以及降噪电路；所述噪声侦测麦克风与所述降噪电路连接，所述第一容值检测电路检测所述第一电容的容值并输出至控制器，所述控制器计算所述第一电容的容值的变化后输出开启/关闭信号至所述降噪电路。According to one aspect of the present utility model, an active noise reduction earphone is provided, comprising an earphone main body and a first earphone control box; the earphone main body includes a shell and a speaker and a noise detection microphone arranged in the shell; the shell includes mutual Combined front cover and back cover, the front cover is provided with a first metal mesh that forms a first capacitor with the earth; the inside of the first earphone control box is provided with a first PCBA board, and the first PCBA board is A first capacitance detection circuit, a controller, and a noise reduction circuit are provided; the noise detection microphone is connected to the noise reduction circuit, and the first capacitance detection circuit detects the capacitance of the first capacitor and outputs to a controller, and the controller outputs an on/off signal to the noise reduction circuit after calculating the change in the capacitance of the first capacitor.
优选的，所述后盖上设有和大地构成第二电容的第二金属网；所述第一PCBA板上还设有第二容值检测电路；所述第二容值检测电路检测所述第二电容的容值并输出至控制器，所述控制器计算所述第二电容的容值的变化后输出开启/关闭信号至所述降噪电路。Preferably, the rear cover is provided with a second metal mesh that forms a second capacitor with the ground; a second capacitance detection circuit is also provided on the first PCBA board; the second capacitance detection circuit detects the The capacitance of the second capacitor is output to the controller, and the controller outputs an on/off signal to the noise reduction circuit after calculating the change of the capacitance of the second capacitor.
优选的，所述控制器为下列任一：单片机、PLC模块、FPGA模块。Preferably, the controller is any of the following: single-chip microcomputer, PLC module, FPGA module.
优选的，所述主动降噪耳机还包括USB耳机插头，所述第一耳机控制盒的一端通过耳机线与耳机主体连接，另一端通过耳机线与所述USB耳机插头连接。Preferably, the active noise reduction earphone further includes a USB earphone plug, one end of the first earphone control box is connected to the earphone main body through an earphone cable, and the other end is connected to the USB earphone plug through an earphone cable.
优选的，所述第一PCBA板上还设有与降噪电路连接的稳压电路，所述USB插头的VBUS引脚与所述稳压电路连接。Preferably, the first PCBA board is also provided with a voltage stabilizing circuit connected to the noise reduction circuit, and the VBUS pin of the USB plug is connected to the voltage stabilizing circuit.
优选的，所述稳压电路为低压差线性稳压电路。Preferably, the voltage stabilizing circuit is a low dropout linear voltage stabilizing circuit.
优选的，所述主动降噪耳机还包括语音麦克风；所述第一PCBA板上还设有音频编解码芯片，所述USB插头传递的数字音频信号经由所述音频编解码芯片转换为模拟音频信号输出至所述喇叭，所述语音麦克风拾取的模拟语音信号经由所述音频编解码芯片转换为数字语音信号经由所述USB插头输出。Preferably, the active noise reduction headset also includes a voice microphone; the first PCBA board is also provided with an audio codec chip, and the digital audio signal transmitted by the USB plug is converted into an analog audio signal via the audio codec chip Output to the speaker, the analog voice signal picked up by the voice microphone is converted into a digital voice signal by the audio codec chip and output through the USB plug.
优选的，所述耳机主体包括左耳耳机主体和右耳耳机主体，所述左耳耳机主体或者右耳耳机主体之一与所述第一耳机控制盒之间还设有第二耳机控制盒，所述第二耳机控制盒的内部设有第二PCBA板，所述第二耳机控制盒的盒体上设有分别与第二PCBA板连接的音量增加按键、音量减小按键、以及接听/暂停按键，所述语音麦克风设置于所述第二PCBA板上。Preferably, the earphone main body includes a left-ear earphone main body and a right-ear earphone main body, and a second earphone control box is further provided between the left-ear earphone main body or the right-ear earphone main body and the first earphone control box, The inside of the second earphone control box is provided with a second PCBA board, and the box body of the second earphone control box is provided with a volume increase button, a volume down button, and an answer/pause that are respectively connected to the second PCBA board button, the voice microphone is arranged on the second PCBA board.
优选的，所述噪声侦测麦克风设置于耳机主体的后声腔内。Preferably, the noise detection microphone is arranged in the rear acoustic cavity of the earphone main body.
优选的，所述主动降噪耳机为非入耳式耳塞。Preferably, the active noise reduction earphones are non-in-ear earplugs.
本实用新型的主动降噪耳机在耳机前盖上设置金属网构成电容，当用户佩戴耳机时金属网与人体皮肤接触导致电容发生变化，反之，当用户从耳朵上取下耳机时电容也会发生变化，控制器根据电容的变化自动开启或关闭耳机的降噪功能。In the active noise reduction earphone of the present invention, a metal mesh is arranged on the front cover of the earphone to form a capacitor. When the user wears the earphone, the metal mesh contacts the skin of the human body, causing the capacitance to change. Conversely, when the user removes the earphone from the ear, the capacitance will also change. The controller automatically turns on or off the noise reduction function of the earphone according to the change of capacitance.
通过以下参照附图对本实用新型的示例性实施例的详细描述，本实用新型的其它特征及其优点将会变得清楚。Other features and advantages of the present invention will become clear through the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings.
附图说明Description of drawings
构成说明书的一部分的附图描述了本实用新型的实施例，并且连同说明书一起用于解释本实用新型的原理。The accompanying drawings, which constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention.
图1是本实用新型主动降噪耳机控制噪声电路开启/关闭的电路框图。Fig. 1 is the circuit block diagram of the active noise reduction earphone of the utility model to control the noise circuit on/off.
图2是本实用新型主动降噪耳机的正面示意图。Fig. 2 is a schematic front view of the active noise reduction earphone of the present invention.
图3是本实用新型主动降噪耳机的背面示意图。Fig. 3 is a schematic view of the back of the active noise reduction earphone of the present invention.
100-第一电容、200-第二电容、300-第一容值检测电路、400-第二容值检测电路、500控制器、600-降噪电路；1-USB插头、2-第一耳机控制盒2、3-第二耳机控制盒、4-耳机主体；5-第二金属网、9-第一金属网、6-耳机线、7-第一PCBA板、8-第二PCBA板、10-第一控制盒上盖、11-第一控制盒下盖、12-第二控制盒上盖、13-第二控制盒下盖、17-语音麦克风。100-first capacitor, 200-second capacitor, 300-first capacitance detection circuit, 400-second capacitance detection circuit, 500 controller, 600-noise reduction circuit; 1-USB plug, 2-first earphone Control box 2, 3-second earphone control box, 4-earphone body; 5-second metal mesh, 9-first metal mesh, 6-earphone cable, 7-first PCBA board, 8-second PCBA board, 10-top cover of the first control box, 11-bottom cover of the first control box, 12-top cover of the second control box, 13-bottom cover of the second control box, 17-voice microphone.
具体实施方式Detailed ways
现在将参照附图来详细描述本实用新型的各种示例性实施例。应注意到：除非另外具体说明，否则在这些实施例中阐述的部件和步骤的相对布置、数字表达式和数值不限制本实用新型的范围。Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangements of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
以下对至少一个示例性实施例的描述实际上仅仅是说明性的，决不作为对本实用新型及其应用或使用的任何限制。The following description of at least one exemplary embodiment is merely illustrative in nature, and in no way serves as any limitation of the invention and its application or use.
对于相关领域普通技术人员已知的技术和设备可能不作详细讨论，但在适当情况下，所述技术和设备应当被视为说明书的一部分。Techniques and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques and devices should be considered part of the description.
在这里示出和讨论的所有例子中，任何具体值应被解释为仅仅是示例性的，而不是作为限制。因此，示例性实施例的其它例子可以具有不同的值。In all examples shown and discussed herein, any specific values should be construed as exemplary only, and not as limitations. Therefore, other instances of the exemplary embodiment may have different values.
应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步讨论。It should be noted that like numerals and letters denote like items in the following figures, therefore, once an item is defined in one figure, it does not require further discussion in subsequent figures.
参考图1-3介绍本实用新型主动降噪耳机的实施例，包括用于连接主机设备(例如手机或者电脑等设备)的USB插头1、第一耳机控制盒2、第二耳机控制盒3、两个耳机主体4。Referring to Figures 1-3, an embodiment of the active noise reduction earphone of the present invention is introduced, including a USB plug 1 for connecting to a host device (such as a mobile phone or a computer), a first earphone control box 2, a second earphone control box 3, Two earphone bodies 4 .
其中一个耳机主体4是左耳耳机主体，另一个耳机主体4是右耳耳机主体。两个耳机主体4中的一个通过耳机线与第二控制盒3连接，第二控制盒3通过耳机线与第一控制盒2的一端连接，另一个耳机主体4通过耳机线直接与第一控制盒2的同一端连接，第一控制盒2的另一端通过耳机线6与USB插头1连接。One of the earphone main bodies 4 is the left-ear earphone main body, and the other earphone main body 4 is the right-ear earphone main body. One of the two earphone main bodies 4 is connected to the second control box 3 through the earphone wire, the second control box 3 is connected to one end of the first control box 2 through the earphone wire, and the other earphone main body 4 is directly connected to the first control box through the earphone wire. The same end of the box 2 is connected, and the other end of the first control box 2 is connected to the USB plug 1 through the earphone line 6 .
耳机主体4包括外壳和设置于外壳内的喇叭和噪声侦测麦克风，噪声侦测麦克风可以设置于耳机主体4的后声腔内，能够有效拾取外界噪音。外壳包括互相结合的前盖和后盖，前盖上设有和大地构成第一电容100的第一金属网9，后盖上设有和大地构成第二电容200的第二金属网5，也就是说，第一电容100的一极是金属网9，另一极是大地，即线路里的GND充当第一电容100的另一极，第二电容200的一极是金属网5，另一极是大地，即线路里的GND充当第二电容200的另一极。The earphone main body 4 includes a shell and a speaker and a noise detection microphone arranged in the shell. The noise detection microphone can be arranged in the rear sound chamber of the earphone main body 4 to effectively pick up external noise. The casing includes a front cover and a back cover combined with each other. The front cover is provided with a first metal mesh 9 forming the first capacitor 100 with the earth, and the rear cover is provided with a second metal mesh 5 forming the second capacitor 200 with the earth. That is to say, one pole of the first capacitor 100 is the metal mesh 9, and the other pole is the earth, that is, the GND in the line acts as the other pole of the first capacitor 100, and one pole of the second capacitor 200 is the metal mesh 5, and the other pole is the ground. The pole is the ground, that is, the GND in the line serves as the other pole of the second capacitor 200 .
第一耳机控制盒2的盒体包括互相结合的上盖10和下盖11，盒体内部设有第一PCBA板7，第一PCBA板7上设有第一容值检测电路300、第二容值检测电路400、控制器500、降噪电路600、稳压电压路、以及音频编解码芯片。The box body of the first earphone control box 2 comprises an upper cover 10 and a lower cover 11 combined with each other, the inside of the box body is provided with a first PCBA board 7, and the first PCBA board 7 is provided with a first capacitance detection circuit 300, a second Capacitance detection circuit 400, controller 500, noise reduction circuit 600, voltage regulator circuit, and audio codec chip.
噪声侦测麦克风与降噪电路600连接，噪声侦测麦克风用于拾取周围噪音并传递给降噪电路600进行处理以起到主动降噪效果，降噪的具体实现不是本发明的重点，本领域技术人员可以根据需求设计不同的降噪电路或者选用现有的降噪芯片或电路，在此不再赘述。The noise detection microphone is connected to the noise reduction circuit 600. The noise detection microphone is used to pick up the surrounding noise and pass it to the noise reduction circuit 600 for processing to achieve an active noise reduction effect. The specific implementation of noise reduction is not the focus of the present invention. Technicians can design different noise reduction circuits or select existing noise reduction chips or circuits according to requirements, which will not be repeated here.
第一容值检测电路300与控制器500连接，第一容值检测电路300检测第一电容100的容值并输出容值至控制器500，控制器500计算第一电容100的容值的变化后输出开启/关闭信号至降噪电路600。具体来说，一开始没有佩戴耳机的情况下第一电容的介质是空气，用户佩戴耳机后第一金属网会与人体皮肤接触导致第一电容的介质变为人体皮肤，从而导致第一电容发生变化，用户摘下耳机的过程与之相反，因此通过检测第一电容的容值的变化即可判断是否产生佩戴或者摘下动作，如果产生佩戴动作，控制器输出信号开启降噪控制系统工作，反之如果产生摘下动作，控制器输出信号停止降噪系统工作。这种设置使得用户的使用更具有实时性，用户带上耳机降噪自动开启，拿下耳机降噪自动关闭，由于不佩戴时降噪功能自动关闭，电池有效续航性得以提高。The first capacitance detection circuit 300 is connected to the controller 500, the first capacitance detection circuit 300 detects the capacitance of the first capacitor 100 and outputs the capacitance to the controller 500, and the controller 500 calculates the change of the capacitance of the first capacitor 100 Then output the on/off signal to the noise reduction circuit 600 . Specifically, the medium of the first capacitor is air when the earphones are not worn at the beginning. After the user wears the earphones, the first metal mesh will come into contact with human skin, causing the medium of the first capacitor to become human skin, thus causing the occurrence of the first capacitor. The process of the user taking off the earphone is the opposite, so by detecting the change of the capacitance of the first capacitor, it can be judged whether the action of wearing or taking off the earphone occurs. If the action of wearing the earphone occurs, the controller outputs a signal to start the noise reduction control system to work. Conversely, if a take-off action occurs, the controller outputs a signal to stop the noise reduction system from working. This setting makes the user's use more real-time. When the user puts on the headset, the noise reduction is automatically turned on, and when the headset is taken off, the noise reduction is automatically turned off. Since the noise reduction function is automatically turned off when not wearing it, the effective battery life is improved.
第二容值检测电路400与控制器500连接，第二容值检测电路400检测第二电容200的容值并输出容值至控制器500，控制器500计算第二电容100的容值的变化后输出开启/关闭信号至降噪电路600。设置第二电容是为了给用户额外提供手工开关降噪功能的条件，如果用户想要开启监听功能，只需要用手去触摸耳机的后盖使得第二金属电网接触到人体皮肤就能够改变第二电容的容值，控制器判断第二电容发生变化后控制降噪系统改变当前状态，即控制降噪系统从当前工作状态变为停止状态或者从当前停止状态变为工作状态。现有的监听功能开关是实体开关按键，本实用新型的手工开关没有实体开关按键，有效节约了成本，同时还使降噪耳机更加轻便。The second capacitance detection circuit 400 is connected to the controller 500, the second capacitance detection circuit 400 detects the capacitance of the second capacitor 200 and outputs the capacitance to the controller 500, and the controller 500 calculates the change of the capacitance of the second capacitor 100 Then output the on/off signal to the noise reduction circuit 600 . The purpose of setting the second capacitor is to provide users with additional conditions for manually switching the noise reduction function. If the user wants to turn on the monitoring function, he only needs to touch the back cover of the earphone with his hand so that the second metal grid touches the human skin to change the second capacitor. The capacitance value of the capacitor, the controller judges that the second capacitor changes and then controls the noise reduction system to change the current state, that is, controls the noise reduction system to change from the current working state to the stopped state or from the current stopped state to the working state. The existing monitoring function switch is a physical switch button, but the manual switch of the utility model has no physical switch button, which effectively saves the cost and makes the noise reduction earphone more portable.
第二耳机控制盒3的盒体包括互相结合的上盖12和下盖13，盒体内部设有第二PCBA板8，语音麦克风17设置于第二PCBA板8上。第二耳机控制盒3的盒体上设有分别与第二PCBA板8连接的音量增加按键、音量减小按键、以及接听/暂停按键，音量增加按键和音量减小按键用于调节喇叭输出的音量，接听/暂停按键用于中断音频播放或进入语音通话状态。The box body of the second earphone control box 3 includes an upper cover 12 and a lower cover 13 combined with each other, and a second PCBA board 8 is arranged inside the box body, and a voice microphone 17 is arranged on the second PCBA board 8 . The box body of the second earphone control box 3 is provided with a volume increase button, a volume decrease button, and an answer/pause button connected to the second PCBA board 8 respectively, and the volume increase button and the volume decrease button are used to adjust the output of the loudspeaker The volume, answer/pause buttons are used to interrupt audio playback or enter the voice call state.
主机设备通过USB插头1输入数字音频信号(包括数字语音信号)，经由音频编解码芯片转换为模拟音频信号输出至喇叭进行播放，语音麦克风17拾取的模拟语音信号经由音频编解码芯片转换为数字语音信号，再经由USB插头1输出主机设备，由主机设备发送给语音通话的对方。The host device inputs digital audio signals (including digital voice signals) through the USB plug 1, converts them into analog audio signals via the audio codec chip and outputs them to the speaker for playback, and the analog voice signals picked up by the voice microphone 17 are converted into digital voice via the audio codec chip The signal is then output to the host device via the USB plug 1, and then sent by the host device to the other party of the voice call.
USB插头1的VBUS引脚与稳压电路连接，稳压电路与降噪电路600连接，主机设备通过USB插头1为降噪电路供电，这样就可以在降噪耳机的结构中去除供电电池和供电电池的充电电路，方便降噪耳机的产品设计，有效节约了成本，同时还使降噪耳机更轻便。这里的稳压电路可以选用低压差线性稳压(LowDropoutRegulator，LDO)电路。The VBUS pin of the USB plug 1 is connected to the voltage stabilizing circuit, and the voltage stabilizing circuit is connected to the noise reduction circuit 600. The host device supplies power to the noise reduction circuit through the USB plug 1, so that the power supply battery and the power supply can be removed from the structure of the noise reduction earphone. The charging circuit of the battery facilitates the product design of the noise-cancelling earphones, effectively saves the cost, and at the same time makes the noise-cancelling earphones lighter. The voltage stabilizing circuit here can be a low dropout linear regulator (Low Dropout Regulator, LDO) circuit.
本实施例的控制器可以为下列任一：单片机、PLC模块、FPGA模块。The controller in this embodiment can be any of the following: a single-chip microcomputer, a PLC module, and an FPGA module.
参考图2所示，本实施例的主动降噪耳机优选为非入耳式耳塞，非入耳式耳塞是指佩戴后耳塞位于用户的耳廓而不会进入耳道，这种耳机更适合本实用新型的第一电容设计，因为入耳式耳机一般都佩戴较厚的硅胶套，做探测电极时，电极离人体皮肤较远，不容易探测。Referring to Fig. 2, the active noise reduction earphone of the present embodiment is preferably a non-in-ear earplug, which means that the earplug is positioned at the user's auricle after wearing and does not enter the ear canal. This earphone is more suitable for the utility model. The first capacitor design, because in-ear headphones generally wear thick silicone sleeves, when used as detection electrodes, the electrodes are far away from the human skin, which is not easy to detect.
本实用新型在耳机前盖上设置金属网构成电容，当用户佩戴耳机时金属网与人体皮肤接触导致电容发生变化，反之，当用户从耳朵上取下耳机时电容也会发生变化，控制器取得电容的变化情况控制耳机的降噪功能开启或关闭。In the utility model, a metal mesh is arranged on the front cover of the earphone to form a capacitor. When the user wears the earphone, the contact between the metal mesh and the skin of the human body causes the capacitance to change. On the contrary, when the user takes the earphone off the earphone, the capacitance also changes. The controller obtains The change of the capacitance controls the noise reduction function of the earphone to be turned on or off.
虽然已经通过示例对本实用新型的一些特定实施例进行了详细说明，但是本领域的技术人员应该理解，以上示例仅是为了进行说明，而不是为了限制本实用新型的范围。本领域的技术人员应该理解，可在不脱离本实用新型的范围和精神的情况下，对以上实施例进行修改。本实用新型的范围由所附权利要求来限定。Although some specific embodiments of the present utility model have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration, rather than limiting the scope of the present utility model. It should be understood by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the invention is defined by the appended claims.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520549080.6UCN204795532U (en) | 2015-07-24 | 2015-07-24 | Earphone of making an uproar falls in initiative |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520549080.6UCN204795532U (en) | 2015-07-24 | 2015-07-24 | Earphone of making an uproar falls in initiative |
| Publication Number | Publication Date |
|---|---|
| CN204795532Utrue CN204795532U (en) | 2015-11-18 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520549080.6UExpired - LifetimeCN204795532U (en) | 2015-07-24 | 2015-07-24 | Earphone of making an uproar falls in initiative |
| Country | Link |
|---|---|
| CN (1) | CN204795532U (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105788737A (en)* | 2016-04-20 | 2016-07-20 | 深圳市方格子电子有限公司 | Lighting data transmission line and earphone employing same |
| CN110300344A (en)* | 2019-03-25 | 2019-10-01 | 深圳市增长点科技有限公司 | Adaptive noise reduction earphone |
| CN110891221A (en)* | 2019-12-25 | 2020-03-17 | 歌尔科技有限公司 | Wireless earphone and wearing detection device and method thereof |
| CN111163391A (en)* | 2020-04-03 | 2020-05-15 | 恒玄科技(北京)有限公司 | Method for noise reduction of headphones and noise reduction headphones |
| CN111885458A (en)* | 2020-07-20 | 2020-11-03 | 歌尔科技有限公司 | Audio playing method, earphone and computer readable storage medium |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105788737A (en)* | 2016-04-20 | 2016-07-20 | 深圳市方格子电子有限公司 | Lighting data transmission line and earphone employing same |
| CN110300344A (en)* | 2019-03-25 | 2019-10-01 | 深圳市增长点科技有限公司 | Adaptive noise reduction earphone |
| CN110891221A (en)* | 2019-12-25 | 2020-03-17 | 歌尔科技有限公司 | Wireless earphone and wearing detection device and method thereof |
| CN111163391A (en)* | 2020-04-03 | 2020-05-15 | 恒玄科技(北京)有限公司 | Method for noise reduction of headphones and noise reduction headphones |
| CN111885458A (en)* | 2020-07-20 | 2020-11-03 | 歌尔科技有限公司 | Audio playing method, earphone and computer readable storage medium |
| CN111885458B (en)* | 2020-07-20 | 2022-04-22 | 歌尔科技有限公司 | Audio playing method, earphone and computer readable storage medium |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder | Address after:261031 Dongfang Road, Weifang high tech Development Zone, Shandong, China, No. 268 Patentee after:GOERTEK Inc. Address before:261031 Dongfang Road, Weifang high tech Development Zone, Shandong, China, No. 268 Patentee before:Goertek Inc. | |
| CX01 | Expiry of patent term | Granted publication date:20151118 | |
| CX01 | Expiry of patent term |