CN111885448A

CN111885448A - Sound signal transmission control circuit and earphone

Info

Publication number: CN111885448A
Application number: CN202010764742.7A
Authority: CN
Inventors: 余志勇
Original assignee: Best Talent Industrial Co ltd
Current assignee: Best Talent Industrial Co ltd
Priority date: 2020-07-30
Filing date: 2020-07-30
Publication date: 2020-11-03

Abstract

The invention discloses a sound signal transmission control circuit and an earphone, wherein the earphone comprises a sound transmission component, a sound production component and a circuit board; the input end of the microcontroller is connected with the sound transmission assembly, the output end of the microcontroller is respectively connected with the sound production assembly and the input end of the wireless assembly, and the output end of the wireless assembly is connected with the sound production assembly; the acoustic transmission assembly is used for picking up sound signals, and the sound signals comprise human voice signals and noise signals; the microcontroller is used for judging and processing the noise signals picked up by the sound transmission assembly and controlling whether the wireless assembly is started or not so as to transmit the human voice signals; and the wireless assembly is used for sending the human voice signal picked up by the voice transmission assembly and receiving the human voice signal and outputting the human voice signal to the voice production assembly. The invention solves the problem that the users can communicate face to face in a noise interference environment without any action, and can realize the instant barrier-free communication of the users face to face.

Description

Sound signal transmission control circuit and earphone

Technical Field

The invention relates to the technical field of earphone pickup enhancement, in particular to a sound signal transmission control circuit and an earphone.

Background

When the earphone works in an environment with severe noise, such as a mine, an airport ground service, a battlefield, a helicopter, an armored car, a ship deck and other high-noise environments, a user can select a proper noise reduction earplug according to the noise level to protect the hearing in order to avoid the influence of the noise on the hearing. However, when a user wears the noise reducing earplug, the perception of ambient sound may be reduced, and even the face-to-face communication between two or more people may be affected. Especially in a battlefield environment, the ability of the soldier to sense the environment is particularly important, which is related to the life safety of the soldier, so that the tactical headset for the soldier needs to have the functions of hearing protection and sound pickup enhancement at the same time.

Therefore, the earphone with the sound-pickup enhancing function is provided, the perception capability of the environmental sound can be recovered or improved by turning on the sound-pickup enhancing function after the earphone is worn, and meanwhile, the sound pressure can be automatically suppressed to be at the proper sound pressure level when high noise is encountered, so that the hearing can be protected from being damaged by the noise. However, the earphone with the sound pickup enhancement function cannot provide face-to-face communication through ambient sound pickup due to interference of high noise when the earphone is exposed to high ambient noise.

Disclosure of Invention

The invention mainly aims to provide a sound signal transmission control circuit and an earphone, aiming at solving the problem that no action is needed when users communicate face to face under the noise interference environment, the system adaptively switches the working mode, and the users can communicate face to face instantly without obstacles.

In order to achieve the above object, the sound signal transmission control circuit provided by the present invention comprises a microcontroller and a wireless component arranged on the circuit board;

the input end of the microcontroller is connected with the sound transmission assembly, the output end of the microcontroller is respectively connected with the sound production assembly and the input end of the wireless assembly, and the output end of the wireless assembly is connected with the sound production assembly;

the acoustic transmission assembly is used for picking up sound signals, and the sound signals comprise human voice signals and noise signals;

the microcontroller is used for judging and processing the noise signals picked up by the sound transmission assembly and controlling whether the wireless assembly is started or not so as to transmit the human voice signals;

the wireless assembly is used for sending the voice signals picked up by the voice transmission assembly and receiving the voice signals and outputting the voice signals to the voice production assembly.

Optionally, the sound signal transmission control circuit further comprises an analog-to-digital converter and a digital-to-analog converter disposed on the circuit board;

the input end of the analog-to-digital converter is connected with the sound transmission assembly, the output end of the analog-to-digital converter is connected with the microcontroller, the output end of the microcontroller is respectively connected with the first input end of the digital-to-analog converter and the input end of the wireless assembly, and the output end of the digital-to-analog converter is connected with the sound production assembly;

the analog-to-digital converter is used for converting the sound signal picked up by the sound production assembly and outputting an audio signal and a noise signal;

the microcontroller is used for comparing noise corresponding to the noise signal output by the analog-to-digital converter with a preset noise threshold value so as to control the audio signal output by the analog-to-digital converter to be output through the sound production assembly or output through the wireless assembly;

and the digital-to-analog converter is used for performing digital-to-analog conversion on the audio signal output by the microcontroller and outputting the audio signal through the sound production assembly.

Optionally, the preset noise threshold is in a range of 80dB to 100 dB.

Optionally, the sound transmission assembly comprises two sets of microphones for picking up a human voice signal and/or a noise signal, respectively.

Optionally, the microcontroller comprises a first digital signal processing unit and a second digital signal processing unit;

the input end of the first digital signal processing unit and the input end of the second digital signal processing unit are respectively connected with the output end of the analog-to-digital converter, the output end of the first digital signal processing unit is connected with the input end of the digital-to-analog converter, and the output end of the second digital signal processing unit is connected with the input end of the wireless component;

the first digital signal processing unit is used for carrying out digital signal processing on sound signals picked up by a group of microphones;

and the second digital signal processing unit is used for carrying out digital signal processing on sound signals picked up by the other group of microphones.

Optionally, the sound signal transmission control circuit further includes an analog-to-digital/digital-to-analog converter disposed on the circuit board, and the analog-to-digital/digital-to-analog converter is connected to the microcontroller;

the analog-to-digital/digital-to-analog converter is used for connecting communication equipment to convert voice signals of the communication equipment so as to send and receive the voice signals.

Optionally, the microcontroller further comprises a voice control unit connected between the second digital signal processing unit and the wireless component;

and the voice control unit is used for controlling the communication terminal by voice.

Optionally, the sound signal transmission control circuit further comprises a PTT key, and the PTT key is connected to the microcontroller;

and the PTT key is used for controlling the communication equipment to send the voice signal.

Optionally, the sound signal transmission control circuit further comprises a mode switching key, and the mode switching key is connected with the microcontroller;

and the mode switching key is used for switching to the voice control unit to control the communication equipment.

The invention also provides an earphone which comprises a sound transmission assembly, a sound production assembly, a circuit board and the sound signal transmission control circuit, wherein the sound transmission assembly is connected with the input end of the circuit board, the output end of the circuit board is connected with the sound production assembly, and the sound signal transmission control circuit comprises a microcontroller and a wireless assembly which are arranged on the circuit board;

According to the technical scheme, the sound signal transmission control circuit is applied to the earphone, the earphone comprises a sound transmission assembly, a sound production assembly and a circuit board, the sound signal transmission control circuit comprises a microcontroller and a wireless assembly, the microcontroller and the wireless assembly are arranged on the circuit board, the input end of the microcontroller is connected with the sound transmission assembly, and the output end of the microcontroller is connected with the input ends of the sound production assembly and the wireless assembly respectively. When two or more users communicate face to face, aiming at the noise of the environment, the scheme simultaneously wears the earphone with the sound signal transmission control circuit and adopts the sound transmission component to pick up the sound signal, namely, the sound signal of the user and the noise signal in the environment are picked up; the microcontroller processes the voice signal of the user and the noise signal in the environment, judges the noise signal picked up by the voice component and controls whether the wireless component starts to transmit the voice signal. That is, in the users who speak face to face, the earphone worn by any one of the users can directly pick up the voices of other speaking users through the judgment of the noise signal size in the environment picked up by the sound transmission component, and the voices are processed by the microcontroller and then are sounded by the sound production component; or the wireless component can receive radio signals sent by the earphones of other speaking users, and the wireless component processes the received radio signals to transmit the received radio signals to the sound production component to produce sound. The technical scheme of the invention solves the problem that the users can communicate face to face in a noise interference environment without any action, and can realize the face to face instant barrier-free communication of the users.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic diagram of an application scenario of an audio signal transmission control circuit according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of an embodiment of an audio signal transmission control circuit according to the present invention;

FIG. 3 is a schematic diagram of a microcontroller in the audio signal transmission control circuit according to an embodiment of the present invention;

FIG. 4 is a schematic circuit diagram of a first embodiment of an audio signal transmission control circuit according to the present invention;

FIG. 5 is a circuit diagram of a second embodiment of an audio signal transmission control circuit according to the present invention;

FIG. 6 is a circuit diagram of a third embodiment of an audio signal transmission control circuit according to the present invention;

fig. 7 is a schematic structural diagram of a first embodiment of the earphone of the present invention;

fig. 8 is a schematic structural diagram of a second embodiment of the earphone according to the present invention.

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, if appearing throughout the text, "and/or" is meant to include three juxtaposed aspects, taking "A and/or B" as an example, including either the A aspect, or the B aspect, or both A and B satisfied aspects. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The invention provides a sound signal transmission control circuit which is applied to an earphone.

In one embodiment, referring to fig. 1 to 3, the sound signal transmission control circuit includes a microcontroller 101 and a wireless component 300 disposed on the circuit board 100;

the input end of the microcontroller 101 is connected with the sound transmission assembly 200, the output end of the microcontroller 101 is respectively connected with the sound production assembly 400 and the input end of the wireless assembly 300, and the output end of the wireless assembly 300 is connected with the sound production assembly 400;

the acoustic transmission assembly 200 is used for picking up sound signals, wherein the sound signals comprise human voice signals and noise signals;

the microcontroller 101 is configured to determine and process the noise signal picked up by the microphone assembly 200, and control whether the wireless assembly 300 is started to transmit a human voice signal;

the wireless assembly 300 is configured to transmit the voice signal picked up by the voice transmission assembly 200 and receive the voice signal and output the voice signal to the sound production assembly 400.

In this embodiment, referring to fig. 1, the explanation of face-to-face speech of two users or a plurality of users in the present solution is specifically explained in terms of face-to-face speech of user a and user B in a noisy environment. In the scheme, the voice transmission assembly 200 is used for picking up the human voice signal and the noise signal, the human voice signal and the noise signal are processed by the microcontroller 101, and the size of the noise signal is judged so as to control whether the wireless assembly 300 is started or not to transmit the human voice signal. It can be understood that, when the user a is speaking to the user B, the sound signal includes the human sound signal when the user a is speaking and the noise signal in the environment, the sound emitting assembly 400 of the user B wearing the earphone can be controlled by the microcontroller 101 according to the magnitude of the picked-up noise signal, so that the human sound signal of the user a is directly picked up by the sound transmitting assembly 200, and the sound emitting assembly 400 is controlled to emit, so that the user B can hear the speech of the user a clearly, in this way, the sound emitting assembly 400 transmits the speech sound of the user on line; or when the user a speaks, the headset worn by the user B receives the radio signal sent by the headset worn by the user a through the wireless component 300, decodes the received radio signal through the headset worn by the user B to identify the speaking content of the user a, and sends out the sound through the sound-emitting component 400 of the headset worn by the user B.

Meanwhile, when the user A speaks, the microcontroller 101 controls whether the wireless component 300 is started or not according to the size of the noise signal picked up by the sound transmission component 200 in the environment, so that the sound picked up by the sound transmission component 200 by the wireless component 300 is transmitted to the earphone worn by the user B through the wireless component 300, the earphone of the user B can transmit the received human voice signal to the sound production component 400 to produce the sound, and the user B can also clearly hear the speech of the user A, and the speech sound of the user is wirelessly transmitted by the wireless component 300 in this way.

In the present embodiment, the sound transmission component 200 is also called a microphone, and the microphone is classified into an air conduction microphone (including an electret ECM microphone, a silicon microphone, and the like) and a bone conduction microphone (including an electromagnetic bone conduction microphone, a piezoelectric bone conduction microphone, and the like). The sound generating device is an acoustic driver, also called a speaker or a horn, and the sound generating assembly 400 may be, but is not limited to, an air vibration sound generating device, an electromagnetic vibration sound generating device, or a piezoelectric sound generating device. The microcontroller 101 may be, but is not limited to, a single chip, a DSP, a programmable FPGA, or the like, to perform judgment processing on the noise signal in the present scheme, and perform digital processing on the voice signal of the user speaking. The wireless component 300 may employ mature wireless technologies including, but not limited to, bluetooth technology, 2.4GHz transmission technology, VHF or UHF, WIFI networking technology, etc., as selected by the application.

Furthermore, in the scheme, a plurality of users communicate, and the number of the users can be in the range of 2-12 persons; the wireless transmission range of wireless assembly 300 may be, but is not limited to, 10-100 meters. Therefore, the application range of the earphone with the sound signal transmission control circuit in the scheme is larger.

According to the technical scheme, the sound signal transmission control circuit is applied to the earphone, the earphone comprises a sound transmission assembly 200, a sound production assembly 400 and a circuit board 100, the sound signal transmission control circuit comprises a microcontroller 101 and a wireless assembly 300, the microcontroller 101 and the wireless assembly 300 are arranged on the circuit board 100, the input end of the microcontroller 101 is connected with the sound transmission assembly 200, and the output end of the microcontroller 101 is connected with the input ends of the sound production assembly 400 and the wireless assembly 300 respectively. When two users or a plurality of users communicate face to face, aiming at the noise of the environment, the sound transmission component 200 is adopted to pick up the sound signals by simultaneously wearing the earphone with the sound signal transmission control circuit in the scheme, namely, the sound signals of the users and the noise signals in the environment are picked up; the microcontroller 101 processes the user's voice signal and the noise signal in the environment, and determines the noise signal picked up by the microphone assembly 200, and controls the wireless assembly 300 to start the transmission of the voice signal. That is, in the users who speak face to face, the earphone worn by any one of the users can directly pick up the voices of other users who speak through the judgment of the magnitude of the noise signal in the environment picked up by the sound-emitting component 200, and the voices are emitted through the sound-emitting component 400 after being processed by the microcontroller 101; alternatively, radio signals from the earphones of other speaking users may be received by the wireless assembly 300, and the received radio signals may be processed by the wireless assembly 300 for transmission to the sound emitting assembly 400 for emitting sound. The technical scheme of the invention solves the problem that the users can communicate face to face in a noise interference environment without any action, and can realize the face to face instant barrier-free communication of the users.

In an embodiment, referring to fig. 2 and fig. 3, the sound signal transmission control circuit further includes an analog-to-digital converter 103 and a digital-to-analog converter 102 disposed on the circuit board 100;

the input end of the analog-to-digital converter 103 is connected with the sound transmission assembly 200, the output end of the analog-to-digital converter 103 is connected with the microcontroller 101, the output end of the microcontroller 101 is respectively connected with the first input end of the digital-to-analog converter 102 and the input end of the wireless assembly 300, and the output end of the digital-to-analog converter 102 is connected with the sound transmission assembly 400;

the analog-to-digital converter 103 is configured to convert the sound signal picked up by the sound emitting assembly 400 and output an audio signal and a noise signal;

the microcontroller 101 is configured to compare noise corresponding to the noise signal output by the analog-to-digital converter 103 with a preset noise threshold, so as to control the audio signal output by the analog-to-digital converter 103 to be output through the sound-generating component 400 or output through the wireless component 300;

the digital-to-analog converter 102 is configured to perform digital-to-analog conversion on the audio signal output by the microcontroller 101, and output the audio signal through the sound generating component 400.

In this embodiment, the acoustic transmission assembly 200 picks up the human acoustic signal and the noise signal, and outputs the signals to the analog-to-digital converter 103 for analog-to-digital conversion, and then the microcontroller 101 compares the noise corresponding to the noise signal with a preset noise threshold to determine the noise level corresponding to the noise signal, so as to control whether the wireless assembly 300 is started. When the noise corresponding to the noise signal is smaller than the preset noise threshold, the microcontroller 101 controls the human voice signal picked up by the voice transmission assembly 200 to perform digital-to-analog conversion through the digital-to-analog converter 102 so as to emit a voice through the voice emitting assembly 400; when the noise corresponding to the noise signal is greater than or equal to the preset noise threshold, the microcontroller 101 controls the human voice signal picked up by the voice transmission assembly 200 to be transmitted through the wireless assembly 300.

It can be understood that, when the user a speaks to the user B, the sound transmission component 200 worn by the user a and used for wearing the earphone can directly pick up the human voice signal of the user a through the sound transmission component 200 and control the sound generation component 400 to emit the human voice signal when the user a wears the earphone and judges that the noise corresponding to the noise signal is smaller than the preset noise threshold, so that the user B can clearly hear the speech of the user a, and the sound generation component 400 transmits the speech sound of the user on line; or when the user a speaks, when the user B wears the earphone to judge that the noise corresponding to the noise signal is greater than or equal to the preset noise threshold, the earphone worn by the user B receives the radio signal sent by the earphone worn by the user a through the wireless component 300, the earphone worn by the user B decodes the received radio signal to identify the speaking content of the user a, and the sound is sent out through the sound-emitting component 400 of the earphone worn by the user B.

Meanwhile, when the user A speaks, the size of the noise signal in the environment can be picked up according to the sound transmission component 200, when the user A wears the earphone and judges that the noise corresponding to the noise signal is larger than or equal to the preset noise threshold value, the microcontroller 101 controls the wireless component 300 to be started, so that the fact that the voice of the user A speaking picked up by the sound transmission component 200 is sent to the earphone worn by the user B through the wireless component 300 by the wireless component 300 is achieved, the earphone of the user B can transmit the received human voice signal to the sound production component 400 to produce the voice, the user B can hear the speech of the user A clearly, and the mode is that the wireless component 300 wirelessly transmits the speech voice of the user A.

In this embodiment, the range of the preset noise threshold is 80dB to 100 dB. It is understood that the preset noise threshold may be 80dB, 90dB, 100dB, etc., and is set according to the actual application.

Specifically, referring to fig. 1, when the preset noise threshold is 80dB and the noise corresponding to the noise signal in the environment is less than 80dB, the user a and the user B communicate with each other through the on-line transmission of the microphone assembly 200; when the noise corresponding to the noise signal in the environment is greater than or equal to 80dB, the user a and the user B communicate with each other through wireless transmission of the wireless component 300.

In an embodiment, referring to fig. 4 to 6, the sound transmission assembly 200 comprises two sets of microphones for picking up a human voice signal and/or a noise signal, respectively, the first set of microphones may be the microphone 201 and the microphone 202 in the figure, and the second set of microphones may be the microphone 203 and the microphone 204 in the figure. The first group of microphones can be used for picking up own voice signals and voice signals of other users, and the second group of microphones can also be used for picking up own voice signals and noise signals. It can be understood that the earphone of the sound signal transmission control circuit of the present scheme is a earphone with a left ear and a right ear, and the earphone of each ear can have one or two sets of microphones, but the same sound signal transmission control circuit is used. In particular, the earphone of the left ear and the earphone of the right ear each have a microphone that picks up the own human voice signal and the human voice signals of the other users, and the earphone of the left ear and/or the earphone of the right ear may also have a microphone that picks up the own human voice signal and the noise signal. That is, in this embodiment, the microphone 201 and the microphone 202 can pick up their own voice signals, and the voice signals and the noise signals of other users, and the microphone 203 and the microphone 204 can pick up their own voice signals and noise signals.

Further, when a pair of earphones has only one set of microphones for picking up a human voice signal and a noise signal, the microphones may be disposed on the earphones of the left ear or the earphones of the right ear, as shown in fig. 4, which is not specifically described herein. When the headphone for the left ear and the headphone for the right ear have the microphone 203 and the microphone 204, respectively, as shown in fig. 5 and fig. 6, the air conduction microphone is used as both the microphone 203 and the microphone 204, and a human voice signal and a noise signal can be picked up; the microphones of the microphone 203 and the microphone 204 are bone conduction microphones, and can pick up human voice signals and noise signals; when the microphone 203 is a bone conduction microphone, a human voice signal can be picked up, and when the microphone 204 is an air conduction microphone, a noise signal can be picked up. The specific microphone combination setting of the earphone with the sound signal transmission control circuit can be set according to the practical application situation, and is not limited here. Further, when the microphone 203 and the microphone 204 both have microphones for picking up the personal voice signal and the noise signal of the user, a two-way noise reduction technology can be realized, a better noise reduction effect is achieved for suppressing random noise, and the speaking sound of the user is clearer. It is also possible that a pair of earphones has only one set of microphones for picking up the human voice signal and the noise signal, and may be arranged on the earphone of the left ear or the earphone of the right ear, as shown in fig. 4, which is not specifically described herein.

In one embodiment, referring to fig. 3, the microcontroller 101 includes a first digital signal processing unit 101a and a second digital signal processing unit 101 b;

the input end of the first digital signal processing unit 101a and the input end of the second digital signal processing unit 101b are respectively connected to the output end of the analog-to-digital converter 103, the output end of the first digital signal processing unit 101a is connected to the input end of the digital-to-analog converter 102, and the output end of the second digital signal processing unit 101b is connected to the input end of the wireless component 300;

the first digital signal processing unit 101a is configured to perform digital signal processing on a group of sound signals picked up by the microphones;

the second digital signal processing unit 101b is configured to perform digital signal processing on sound signals picked up by another group of microphones.

Based on the above embodiment, the microphone that picks up the personal voice signal and the personal voice signals of other users may be processed by the first digital signal processing unit 101a in the microcontroller 101, and output after digital-to-analog conversion by the digital-to-analog converter 102, that is, the first personal voice online transmission mode; the microphone picking up the personal voice signal and the noise signal can be processed by the second digital signal processing unit 101b in the microcontroller 101, so as to reduce the noise and improve the voice quality of the user, and then the voice is output by the wireless component 300, namely, the second mode of wireless transmission of the personal voice is realized.

In this embodiment, the plurality of microphones respectively and simultaneously pick up the personal sound signals, the microphones of the personal sound signals of other users and the noise signals in the environment, perform analog-to-digital conversion on the analog-to-digital signals through the analog-to-digital converter 103, input the analog-to-digital signals into the microcontroller 101, perform digital signal processing through the first digital processing unit, transmit the digital-to-analog signals to the digital-to-analog converter 102, and then respectively transmit the digital-to-analog signals to the sound production assembly 400, and the sound production assembly 400 produces sound to complete the sound collection enhancement function.

In order to ensure that the transmitted voice of the user A does not have the problem of intermittence or word dropping when the working mode is automatically switched, in the actual work, the microphone for picking up the voice signal and the noise signal of the user A is always in the working state and waits for the switching of the working mode at any time. When the working mode is switched to the wireless transmission mode, the microphone picking up the personal voice signal and the noise signal is subjected to analog-to-digital conversion by the analog-to-digital converter 103, then is input into the microcontroller 101, is subjected to digital signal processing by the second digital signal processing unit 101b, is transmitted to the wireless component 300, and transmits the signal output by the second digital signal processing unit 101b to the wireless component 300 through the antenna of the wireless component 300 to transmit a radio signal, so that the transmission of the personal voice signal of the user A is completed; when the user B receives the voice signal of the user A, the wireless component 300 which is worn by the user B and used for wearing the earphone is used for carrying out signal processing, the signal is output to the digital-to-analog converter 102 for digital-to-analog signal conversion, then the digital-to-analog signal is respectively transmitted to the sound production component 400, and the sound production component 400 produces sound to complete a sound pickup enhancing function loop.

In one embodiment, referring to fig. 6, the sound signal transmission control circuit further includes an analog-to-digital/digital-to-analog converter 104 disposed on the circuit board 100, wherein the analog-to-digital/digital-to-analog converter 104 is connected to the microcontroller 101;

the analog-to-digital/digital-to-analog converter 104 is used for connecting to the communication device 600 to perform conversion processing on the voice signal of the communication device 600, so as to transmit and receive the voice signal.

It can be understood that the a/d converter 104 is connected to the communication device 600, and is configured to perform a/d conversion on a voice signal of the communication terminal, and has a remote transceiver function after being connected.

In the above embodiment, referring to fig. 4 to fig. 6, the microcontroller 101 further includes a voice control unit 101c, and the voice control unit 101c is connected between the second digital signal processing unit 101b and the wireless component 300;

and the voice control unit 101c is used for controlling the communication terminal by voice.

Further, in order to save system resources and reduce power consumption, in the microcontroller 101, the voice control unit 101c has a voiceprint recognition function, normal noise is not sensitive to it, the signal transmission channel of the wireless component 300 can be activated only by the user's own voice signal, and when there is no voice signal in the noisy signal, the wireless component 300 is only in a receiving state, and a low power consumption operation mode is maintained.

In one embodiment, referring to fig. 6, the sound signal transmission control circuit further comprises a PTT button 701, and the PTT button 701 is interconnected with the microcontroller 101;

the PTT button 701 is used to control the communication device 600 to transmit a voice signal.

The sound signal transmission control circuit further comprises a mode switching key 702, wherein the mode switching key 702 is connected with the microcontroller 101;

the mode switching key 702 is configured to switch to the voice control unit 101c to control the communication device 600.

In the above embodiment, in the actual application process, both the PTT button 701 and the mode switching button 702 are provided, and the communication device 600 is not included in the headset and belongs to an external device; specifically, when communication needs to be performed through the communication device 600, a voice signal can be sent only by pressing the PTT key 701, and the sending function of the communication device 600 is controlled by the voice control unit 101c after the PTT key 701 is pressed; at the same time, the signal path from the second DSP unit 101b to the wireless component 300 is cut off, so as to enhance the security of communication. When communication is required to be performed through the communication device 600, because the PTT button 701 cannot be operated by the user's hand during operation or tactical movement, the mode switching button 702 can be pressed to switch to the voice-controlled operating mode of the communication terminal, and in the voice-controlled operating mode, the user can trigger the communication device 600 in the voice-controlled operating mode without operating the PTT button 701, thereby completing the voice sending function of the communication device 600.

In the above embodiment, the earphone having the sound signal transmission control circuit may be a headphone, and as shown in fig. 7, a simplified installation diagram of the right ear is shown, and since the left ear function corresponds to the right ear function, the description thereof is omitted. The earphone shell 3001 is provided with a microphone 201, a microphone 203, a sounding device 401 and a circuit board 100100; because the volume space of the headphone housing is large, the circuit board 100100 can be directly installed in the headphone housing 3001, and according to the product design requirement, the circuit board 100100 can also be installed at a position outside the headphone housing alone, for example, by adding a box or a cable control device.

The earphone having the sound signal transmission control circuit may be an earphone, and a description thereof will be omitted in the drawing since the left ear function corresponds to the right ear, referring to fig. 8, which shows a schematic view of the right ear. The earphone shell 3000 is provided with a microphone 201, a microphone 203 and a sounding device 401, and the circuit board 100100 is arranged at a position outside the earphone shell; when the microcontroller 101 having a smaller size is selected, the area of the circuit board 100100 can be reduced, and the circuit board 100100 can also be directly mounted in the earphone case 3000.

The invention also provides an earphone, which comprises a sound transmission assembly 200, a sound production assembly 400, a circuit board 100 and the sound signal transmission control circuit, wherein the sound transmission assembly 200 is connected with the input end of the circuit board 100, the output end of the circuit board 100 is connected with the sound production assembly 400, and the sound signal transmission control circuit comprises a microcontroller 101 and a wireless assembly 300 which are arranged on the circuit board 100;

The specific structure of the sound signal transmission control circuit refers to the above embodiments, and since the earphone employs all technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.

The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents made by the contents of the specification and drawings or directly/indirectly applied to other related technical fields are included in the scope of the present invention.

Claims

1. A sound signal transmission control circuit is applied to an earphone, and the earphone comprises a sound transmission component, a sound production component and a circuit board;

2. The acoustic signal transmission control circuit according to claim 1, further comprising an analog-to-digital converter and a digital-to-analog converter provided on the circuit board;

3. The acoustic signal transmission control circuit of claim 2, wherein the predetermined noise threshold is in a range of 80dB to 100 dB.

4. The sound signal transmission control circuit of claim 2, wherein the sound transmission member comprises two sets of microphones for picking up a human sound signal and/or a noise signal, respectively.

5. The sound signal transmission control circuit of claim 4, wherein the microcontroller comprises a first digital signal processing unit and a second digital signal processing unit;

6. The audio signal transmission control circuit of claim 5, further comprising an analog-to-digital/digital-to-analog converter disposed on the circuit board, the analog-to-digital/digital-to-analog converter being interconnected with the microcontroller;

7. The voice signal transmission control circuit of claim 6, wherein the microcontroller further comprises a voice control unit, the voice control unit being coupled between the second digital signal processing unit and the wireless component;

8. The sound signal transmission control circuit of claim 7, further comprising a PTT button, the PTT button being interconnected with the microcontroller;

9. The audio signal transmission control circuit of claim 7, further comprising a mode switch button, said mode switch button interconnected with said microcontroller;

10. An earphone, characterized in that, the earphone includes a sound transmission component, a sound production component, a circuit board and the sound signal transmission control circuit of any one of claims 1 to 9, the sound transmission component is connected with the input end of the circuit board, and the output end of the circuit board is connected with the sound production component.