Voice control noise reduction earphone circuit

Abstract

The utility model provides a voice control noise reduction earphone circuit. The voice control noise reduction earphone circuit comprises a voice recognition module, a main control module, an active noise reduction module and a receiver, the voice recognition module is provided with a voice recognition control chip and a pickup microphone electrically connected with the voice recognition control chip, and the voice recognition control chip is suitable for collecting a user voice instruction through the pickup microphone and converting the user voice instruction into an electric signal instruction; the main control module is provided with a microcontroller, the microcontroller is electrically connected with the voice recognition control chip, and the microcontroller is suitable for converting the electric signal instruction into a noise reduction control instruction; the active noise reduction module comprises an active noise reduction circuit, and the active noise reduction circuit is electrically connected with the microcontroller and the noise reduction output module and is suitable for generating reverse sound waves according to the noise reduction control instruction and outputting the reverse sound waves to the receiver; the receiver is arranged in an earplug cavity of the earphone. The voice control noise reduction earphone circuit provided by the utility model can realize rapid switching of noise reduction modes.

Description

Technical Field

[0001] This utility model belongs to the field of noise-canceling headphone technology, specifically relating to a voice-controlled noise-canceling headphone circuit. Background Technology

[0002] In high-noise environments such as airports, subways, and buses, the noise levels from various sound sources are high, and the energy is highly concentrated in the mid-to-low frequency range. Traditional headphone noise reduction algorithms are ineffective against high-intensity mid-to-low frequency noise signals. This is because these algorithms struggle to effectively process such strong noise, and the passive sound insulation materials used in headphones cannot fundamentally prevent the diffraction of low-frequency noise. Ultimately, a large amount of noise energy breaks through the barriers and enters the ear canal directly, severely interfering with the user experience. Meanwhile, in such noisy environments, users have to turn up the headphone volume to ensure clear calls. However, prolonged exposure to high volume significantly increases the risk of hearing damage.

[0003] Currently, with the increasing popularity of active noise cancellation technology, the noise-canceling headphone market is booming. However, most headphones rely on physical buttons or mobile apps to switch noise cancellation modes. In everyday scenarios such as subways and daily flights, the limited range of modes makes it difficult for headphones to flexibly cope with noise environments of varying intensities and frequencies. Furthermore, switching noise cancellation modes is complex and requires manual operation, which is inconvenient in high-noise environments. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a voice-controlled noise-canceling headphone circuit to solve the problem of inconvenient switching of noise-canceling modes in existing active noise-canceling headphones.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0006] A voice-controlled noise-canceling headphone circuit, comprising:

[0007] The system includes a speech recognition module, a main control module, an active noise reduction module, and a receiver.

[0008] The voice recognition module is equipped with a voice recognition control chip and a microphone electrically connected to the voice recognition control chip. The voice recognition control chip is adapted to collect user voice commands through the microphone and convert them into electrical signal commands.

[0009] The main control module is equipped with a microcontroller, which is electrically connected to the voice recognition control chip. The microcontroller is suitable for converting electrical signal commands into noise reduction control commands.

[0010] The active noise cancellation module includes an active noise cancellation circuit, which is electrically connected to a microcontroller and a noise cancellation output module. It is suitable for generating an anti-phase sound wave according to the noise cancellation control command and outputting it to the receiver.

[0011] The receiver is located inside the earpiece cavity of the headset.

[0012] Preferably, the active noise cancellation module further includes: a microphone module;

[0013] The microphone module includes a feedforward microphone and a feedback microphone;

[0014] Both the feedforward microphone and the feedback microphone are located inside the earbud cavity;

[0015] The outputs of both the feedforward and feedback microphones are electrically connected to the active noise cancellation circuit.

[0016] Preferably, the active noise reduction circuit includes: a first signal preprocessing module and a second signal preprocessing module;

[0017] Both the first and second signal preprocessing modules include a filter network and a preamplifier.

[0018] The input terminals of the preamplifiers of the first signal preprocessing module and the second signal preprocessing module are electrically connected to the output terminals of the feedforward microphone and the feedback microphone, respectively.

[0019] The output of the preamplifier is electrically connected to the input of the filter network.

[0020] Preferably, the active noise cancellation circuit includes: ADAU1772 chip;

[0021] The Ain0 port of the ADAU1772 chip is electrically connected to the output of the feedforward microphone, the Ain1 port is electrically connected to the output of the feedback microphone, and the DA0 port is connected to the input of the noise reduction output module.

[0022] Preferably, the microcontroller is an STM32F103, which is connected to the ADAU1772 chip via an integrated circuit bus interface.

[0023] Preferably, there are two active noise cancellation modules and two receivers;

[0024] The two receivers are located in the left and right earpieces of the headset, respectively.

[0025] The active noise cancellation circuits of the two active noise cancellation modules are electrically connected to the receivers in the left and right earpieces, respectively.

[0026] Preferably, it also includes: an interface circuit;

[0027] Both the speech recognition module and the active noise reduction module are electrically connected to the main control module via interface circuits.

[0028] Preferably, it also includes: a physical button module;

[0029] The physical button module is equipped with buttons;

[0030] The buttons are located on the surface of the earphone shell and are electrically connected to the main control module through an interface circuit.

[0031] Preferably, it also includes: a power management module;

[0032] The power management module includes a power supply and a power IC;

[0033] Power ICs are used to manage the voltage output of power adapters in order to charge the power supply.

[0034] Preferably, it also includes: a voice transmission module;

[0035] The microphone module is electrically connected to the main control module via an interface circuit.

[0036] In summary, this utility model provides a voice-controlled noise-canceling headphone circuit. By setting up a voice recognition module, users can directly switch the noise-canceling mode of the headphones through voice commands, thereby avoiding cumbersome manual operation steps. By setting up a main control module and an active noise cancellation module, the main control module can convert user voice commands into noise cancellation commands, and the active noise cancellation module can actively process external environmental noise after receiving the noise cancellation commands, and can also dynamically correct residual noise in the ear canal, thereby flexibly coping with noise environments of different intensities and frequency characteristics. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 A module diagram of a voice-controlled noise-canceling headphone circuit provided in an embodiment of this utility model;

[0039] Figure 2 A block diagram of a voice-controlled noise-canceling headphone circuit provided in an embodiment of this utility model;

[0040] Figure 3 A schematic diagram of the voice-controlled noise-canceling headphone circuit provided in an embodiment of this utility model.

[0041] Explanation of reference numerals in the attached figures:

[0042] 100 - Speech recognition module;

[0043] 200 - Main control module;

[0044] 300 - Active noise cancellation module; 310 - Active noise cancellation circuit; 311 - First signal preprocessing module; 312 - Second signal preprocessing module; 321 - Feedforward microphone; 322 - Feedback microphone;

[0045] 400-Receiver;

[0046] 500-interface circuit;

[0047] 600-Physical button module;

[0048] 700-Power Management Module. Detailed Implementation

[0049] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0050] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0051] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0052] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0053] Please see Figures 1-3 This embodiment provides a voice-controlled noise-canceling headphone circuit, including: a voice recognition module 100, a main control module 200, an active noise cancellation module 300, and a receiver 400; the voice recognition module 100 is provided with a voice recognition control chip and a microphone electrically connected to the voice recognition control chip, the voice recognition control chip is adapted to collect user voice commands through the microphone and convert them into electrical signal commands; the main control module 200 is provided with a microcontroller, the microcontroller is electrically connected to the voice recognition control chip, the microcontroller is adapted to convert electrical signal commands into noise cancellation control commands; the active noise cancellation module 300 includes an active noise cancellation circuit 310, the active noise cancellation circuit 310 is electrically connected to the microcontroller and a noise cancellation output module, and is adapted to generate an anti-phase sound wave according to the noise cancellation control command and output it to the receiver 400; the receiver 400 is disposed in the earbud cavity of the headphone.

[0054] Specifically, the microphone can directionally capture user voice commands while suppressing ambient noise interference. The microphone can be electrically connected to the voice recognition chip, allowing it to transmit user voice commands to the chip. The voice recognition control chip can convert user voice commands into electrical signals in real time and transmit them to the main control module 200 via a digital interface, enabling rapid switching between noise reduction modes. Furthermore, the voice recognition control chip supports keyword wake-up functionality, entering a low-power mode when not in use to extend battery life.

[0055] The core of the main control module 200 is a microcontroller. The microprocessor communicates with the active noise cancellation module 300 via an integrated circuit bus. The main control module 200 is responsible for the overall coordination and command parsing of the headphones. The microcontroller receives the electrical signal commands output by the voice recognition module 100, converts them into specific noise cancellation control commands, and sends them to the active noise cancellation module 300 via the integrated circuit bus.

[0056] The core of the active noise cancellation module 300 is the active noise cancellation circuit 310. The active noise cancellation module 300 generates an anti-phase sound wave with the same frequency and opposite phase as the external ambient noise according to the electrical signal instruction output by the microprocessor. Finally, the generated anti-phase sound wave signal is converted into an analog signal and output to the receiver 400.

[0057] The receiver 400 can be configured as a speaker. Embedded inside the earpiece cavity, it is responsible for converting electrical signals into sound wave signals. The receiver 400, combined with a closed acoustic cavity design and silicone / memory foam ear tips, further enhances physical noise isolation. The receiver 400 ensures that the anti-phase sound waves generated by the active noise cancellation module 300 accurately cancel out external ambient noise within the ear canal, while maintaining high-fidelity output of music or call audio.

[0058] The workflow of this embodiment is as follows: The voice recognition module 100 receives the user's voice command and converts it into an electrical signal, which is then input into the microcontroller. The microcontroller converts the received electrical signal into a specific noise reduction control command and outputs the corresponding command to the active noise reduction module 300. The active noise reduction circuit 310 in the active noise reduction module 300 processes the audio signal according to the command signal from the microprocessor and finally outputs the processed audio signal to the receiver 400. By setting up the voice recognition module 100, the user can directly switch the noise reduction mode of the headset through voice commands, thereby avoiding cumbersome manual operation steps. By setting up the main control module 200 and the active noise reduction module 300, the main control module 200 can convert the user's voice command into a noise reduction command. After receiving the noise reduction command, the active noise reduction module 300 can actively reduce external environmental noise and dynamically correct residual noise in the ear canal, thereby flexibly coping with noise environments of different intensities and frequency characteristics.

[0059] Please see Figure 2 The active noise cancellation module 300 also includes a microphone module; the microphone module includes a feedforward microphone 321 and a feedback microphone 322; both the feedforward microphone 321 and the feedback microphone 322 are located inside the earpiece cavity; the output terminals of both the feedforward microphone 321 and the feedback microphone 322 are electrically connected to the active noise cancellation circuit 310.

[0060] The active noise cancellation circuit 310 can be configured as an adaptive active noise cancellation circuit, which is a circuit system that effectively reduces environmental noise through electronic means. Its core principle is to use an adaptive filter to monitor environmental noise in real time and generate an anti-noise signal with opposite phase and similar amplitude to the noise signal. The two signals are then superimposed to effectively cancel out the noise. Simultaneously, this circuit has adaptive adjustment capabilities, automatically adjusting the filter parameters according to changes in the noise source to ensure good noise reduction performance in various noise environments.

[0061] The feedforward microphone 321 is installed at the acoustic opening near the outer side of the earpiece cavity. Its main function is to collect external environmental noise (such as traffic noise, human conversation, etc.) in real time. The output of the feedforward microphone 321 is connected to the input of the active noise cancellation circuit 310 via a cable, so that the external environmental noise signal can be transmitted to the active noise cancellation circuit 310. The active noise cancellation circuit 310 processes the noise signal captured by the feedforward microphone 321, generates a corresponding anti-phase sound wave, and then transmits the anti-phase sound wave into the ear canal through the receiver 400, thereby effectively canceling external noise, realizing the active noise cancellation function, and improving the user's listening experience.

[0062] The feedback microphone 322 is located inside the earbud cavity near the ear canal and is used to monitor residual noise in the ear canal and the mixed sound output by the receiver 400. The output of the feedback microphone 322 is connected to the input of the active noise cancellation circuit 310, so that the residual noise in the ear canal and the mixed sound output by the receiver 400 can be transmitted to the active noise cancellation circuit 310 for processing. The noise cancellation parameters are optimized through closed-loop control to ensure the accuracy and stability of noise cancellation.

[0063] Please see Figure 2 The active noise reduction circuit 310 includes: a first signal preprocessing module 311 and a second signal preprocessing module 312; both the first signal preprocessing module 311 and the second signal preprocessing module 312 include a filter network and a preamplifier; the input terminals of the preamplifiers of the first signal preprocessing module 311 and the second signal preprocessing module 312 are electrically connected to the output terminals of the feedforward microphone 321 and the feedback microphone 322, respectively; the output terminal of the preamplifier is electrically connected to the input terminal of the filter network.

[0064] The external ambient noise signal acquired by the feedforward microphone 321 is first input to a preamplifier. The preamplifier is responsible for initially amplifying the weak ambient noise signal to improve the signal-to-noise ratio. The amplified noise signal then enters a filtering network. By configuring the gain, bandwidth, and center frequency parameters of the feedforward filter, the noise spectrum is selectively suppressed, and an inverted waveform is generated to cancel out the external noise. This forms a composite active noise reduction architecture, significantly improving the first signal preprocessing module 311's ability to suppress broadband ambient noise.

[0065] The circuit structure of the second signal preprocessing module 312 is similar to that of the first signal preprocessing module 311, but the parameter configurations differ. The feedback microphone 322 can input the collected signal (including residual noise in the ear canal and 400-tone feedback from the receiver) to the preamplifier, which amplifies the signal. The amplified signal is then input to the filtering network. The filtering network of the second signal preprocessing module 312 consists of a set of digital filters. By dynamically configuring the gain, bandwidth, and center frequency parameters of the feedback filters, a cancellation signal with the same frequency, amplitude, and opposite phase as the ear canal noise is generated. This significantly improves the dynamic correction capability of the second signal preprocessing module 312 for residual noise in the ear canal.

[0066] The collaborative workflow of the two signal preprocessing modules is as follows: the first signal preprocessing module 311 quickly responds to external noise and generates an initial inverse sound wave; the second signal preprocessing module 312 monitors the in-ear sound field in real time and dynamically calibrates the noise reduction effect of the first signal preprocessing module 311. The output signals of both modules generate a high-precision inverse sound wave signal through the noise reduction chip, achieving wide-bandwidth and high-depth noise cancellation. This dual-path preprocessing architecture significantly improves the noise reduction system's adaptability to complex environmental noise while reducing the risk of noise reduction failure caused by differences in earplug wearing or sudden environmental changes.

[0067] Please see Figure 3 The active noise reduction circuit 310 includes: an ADAU1772 chip; the Ain0 port of the ADAU1772 chip is electrically connected to the output of the feedforward microphone 321, the Ain1 port is electrically connected to the output of the feedback microphone 322, and the DA0 port is connected to the input of the noise reduction output module.

[0068] The Ain0 port of the ADAU1772 chip is electrically connected to the output of the feedforward microphone 321 to receive ambient noise signals; the Ain1 port is electrically connected to the output of the feedback microphone 322 to acquire the actual sound signal inside the ear for real-time monitoring of the noise reduction effect; the DA0 port is connected to the input of the noise reduction output module to output the processed noise reduction signal to the receiver 400, which outputs an inverted sound wave to effectively cancel out ambient noise.

[0069] Please see Figure 3 The microcontroller is model STM32F103, and it connects to the ADAU1772 chip via an integrated circuit bus interface.

[0070] The microcontroller can be configured as an STM32F103 microcontroller, which can convert the user's voice commands into electrical signal commands and connect to the ADAU1772 audio processing chip via an I2C bus. The ADAU1772 generates corresponding inverted sound waves based on the electrical signal commands and then transmits these inverted sound waves to the receiver 400. In some other embodiments, other microcontrollers with I2C communication capabilities can also be used.

[0071] Please see Figure 2 There are two active noise cancellation modules 300 and two receivers 400; the two receivers 400 are respectively located in the left earbud cavity and the right earbud cavity of the earphone; the active noise cancellation circuits 310 of the two active noise cancellation modules 300 are electrically connected to the receivers 400 in the left earbud cavity and the right earbud cavity, respectively.

[0072] In the voice-controlled noise-canceling headphone circuit, there are two active noise-canceling modules 300 and two receivers 400, respectively located in the left and right earbud chambers. The active noise-canceling circuit 310 of each active noise-canceling module 300 is electrically connected to the corresponding receiver 400, forming an independent noise-canceling system. This allows the left and right earbuds to independently perform noise cancellation, better adapting to different ear canal structures and external noise environments, thus improving noise cancellation effectiveness and sound quality.

[0073] Please see Figure 2 Both the voice recognition module 100 and the active noise reduction module 300 are electrically connected to the main control module 200 via the interface circuit 500. After the user's voice command is parsed by the voice recognition module 100, it triggers the main control module 200 to adjust the noise reduction parameters. The main control module 200 sends electrical signal commands to the ADAU1772 in real time via the I2C bus, while monitoring its status to ensure the stability of electrical signal processing.

[0074] Please see Figure 2The voice-controlled noise-canceling headphone circuit also includes: a physical button module 600; the physical button module 600 is equipped with buttons; the buttons are located on the surface of the headphone shell, and the buttons are electrically connected to the main control module 200 through the interface circuit 500.

[0075] The voice-controlled noise-canceling headphone circuit integrates a physical button module 600, which is located on the surface of the headphone shell. The physical button is electrically connected to the main control module 200 through an interface circuit 500. The interface circuit 500 is responsible for processing and converting the electrical signals generated by the physical button operation to ensure the accuracy and stability of the electrical signals. Then, the processed electrical signals are transmitted to the main control module 200. The main control module 200 identifies and analyzes the electrical signals, thereby enabling users to control various functions of the headphone through the physical buttons, such as power switch, volume adjustment, play / pause, etc., providing users with a convenient and intuitive operating experience and meeting the user's needs in different scenarios.

[0076] Please see Figure 2 The voice-controlled noise-canceling headphone circuit also includes: a power management module 700; the power management module 700 is equipped with a power supply and a power IC; the power IC is adapted to manage the voltage output by the power adapter in order to charge the power supply.

[0077] After being managed by the power IC, the voltage output from the power adapter not only provides stable power to the various components of the headphones but also enables the charging of the power supply. The power IC can intelligently adjust the charging current and voltage to ensure efficient and safe charging, effectively avoiding overcharging and other problems, thereby extending the lifespan of the power supply.

[0078] Please see Figure 2 The voice-controlled noise-canceling headphone circuit also includes a microphone module; the microphone module is electrically connected to the main control module 200 through the interface circuit 500.

[0079] The microphone module in the voice-controlled noise-canceling headphone circuit is electrically connected to the main control module 200 via interface circuit 500. It is responsible for converting user voice commands into electrical signals and transmitting them to the main control module 200 for processing. The microphone module can use a microphone to capture user voice commands. Interface circuit 500 can amplify and filter the analog signal output from the microphone to ensure that the signal transmitted to the main control module 200 has high quality and stability, thereby achieving accurate response and execution of the voice control function.

[0080] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0081] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A voice controlled noise reducing earphone circuit, characterized in that, The application relates to an earphone, which comprises a voice recognition module, a main control module, an active noise reduction module and a receiver. The voice recognition module is provided with a voice recognition control chip and a pickup microphone electrically connected with the voice recognition control chip, the voice recognition control chip is adapted to collect user voice instructions through the pickup microphone and convert the user voice instructions into electrical signal instructions, the main control module is provided with a microcontroller, the microcontroller is electrically connected with the voice recognition control chip, and the microcontroller is adapted to convert the electrical signal instructions into noise reduction control instructions, the active noise reduction module comprises an active noise reduction circuit, the active noise reduction circuit is electrically connected with the microcontroller and a noise reduction output module, and the active noise reduction circuit is adapted to generate reverse sound waves according to the noise reduction control instructions and output the reverse sound waves to the receiver, and the receiver is arranged in an earplug cavity of the earphone. The active noise reduction module further comprises a microphone module. The microphone module comprises a feedforward microphone and a feedback microphone. The feedforward microphone and the feedback microphone are both arranged in the earplug cavity. The output ends of the feedforward microphone and the feedback microphone are both electrically connected with the active noise reduction circuit.

2. The voice controlled noise reducing earphone circuit of claim 1, wherein, The active noise reduction circuit comprises a first signal preprocessing module and a second signal preprocessing module. The first signal preprocessing module and the second signal preprocessing module both comprise a filter network and a preamplifier. The input ends of the preamplifiers of the first signal preprocessing module and the second signal preprocessing module are respectively electrically connected with the output ends of the feedforward microphone and the feedback microphone. The output ends of the preamplifiers are electrically connected with the input ends of the filter networks.

3. The voice controlled noise reducing earphone circuit of claim 2, wherein, The active noise reduction circuit comprises an ADAU1772 chip. The Ain0 port of the ADAU1772 chip is electrically connected with the output end of the feedforward microphone, the Ain1 port is electrically connected with the output end of the feedback microphone, and the DA0 port is connected with the input end of the noise reduction output module. The model of the microcontroller is STM32F103, and the microcontroller STM32F103 is connected with the ADAU1772 chip through an integrated circuit bus interface. The number of the active noise reduction modules and the number of the receivers are both two.

4. The voice controlled noise reducing earphone circuit of claim 2, wherein, Two receivers are respectively arranged in left earplug cavities and right earplug cavities of the earphone. The active noise reduction circuits of two active noise reduction modules are respectively electrically connected with the receivers in the left earplug cavities and the right earplug cavities.

5. The voice controlled noise reducing earphone circuit of claim 4, wherein, The application further comprises an interface circuit.

6. The voice controlled noise reducing earphone circuit of claim 1, wherein, The voice recognition module and the active noise reduction module are both electrically connected with the main control module through the interface circuit. The application further comprises a physical key module. The physical key module is provided with a key.

7. The voice controlled noise reducing earphone circuit of claim 1, wherein, The key is arranged on the surface of the shell of the earphone, and the key is electrically connected with the main control module through the interface circuit. The application further comprises a power management module. The power management module is provided with a power supply and a power IC.

8. The voice controlled noise reducing earphone circuit of claim 7, wherein, The power IC is adapted to manage the voltage output by a power adapter to charge the power supply. The application further comprises a microphone module. The microphone module is electrically connected with the main control module through the interface circuit. ​ 9. The voice controlled noise reducing earphone circuit of claim 7, wherein, ​ ​ ​ 10. The voice controlled noise reducing earphone circuit of claim 7, wherein, ​ ​

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