CN212324331U

CN212324331U - Bluetooth earphone

Info

Publication number: CN212324331U
Application number: CN202021468795.6U
Authority: CN
Inventors: 洪龙杰; 康爱军
Original assignee: Xiamen Guangkai Electronics Co ltd
Current assignee: Xiamen Guangkai Electronics Co ltd
Priority date: 2020-07-23
Filing date: 2020-07-23
Publication date: 2021-01-08
Anticipated expiration: 2030-07-23

Abstract

The utility model discloses a bluetooth headset, including sound collection module, signal amplification circuit, speech recognition analysis module, audio data processing module, audio amplification module and speaker, sound collection module is used for gathering external sound, sound collection module's output termination signal amplification circuit's input, signal amplification circuit's output termination speech recognition analysis module's input, speech recognition analysis module's output termination audio data processing module's input, audio data processing module's output termination audio amplification module's input, audio amplification module's output termination speaker. The voice collected by the voice collecting module is amplified by the signal amplifying circuit, is identified and analyzed by the voice identifying and analyzing module, and the voice of the speaking of the person is screened out and provided for the user by the audio data processing module, the audio amplifying module and the loudspeaker, so that the user can clearly hear the voice of the person nearby.

Description

Bluetooth earphone

Technical Field

The utility model belongs to the technical field of the earphone, concretely relates to bluetooth headset.

Background

Nowadays, earphones become necessary products for many people, people can conveniently make a call, listen to songs or chase a drama by using the earphones, and people can protect the privacy of the people and cannot influence other people by wearing the earphones.

We find that more and more people have a habit of wearing earphones for a long time, and many people choose earphones with a good noise reduction effect because the people do not want to hear noises such as air conditioner noise, traffic noise and the like, but earphones in the current market have no pertinence in noise reduction, all environmental sounds including voices of people are isolated by the earphones, and a user wearing the earphones cannot hear or even cannot hear people nearby and speak with himself, so that the opposite party needs to repeat one time or the user does not respond to the opposite party because he does not hear the other party, and sometimes even the situation that the other party considers that the other party does not hear the other party and considers that the other party is already transmitting occurs, and important things are delayed.

In summary, the prior art has a problem that the earphone isolates various noises and simultaneously isolates the speaking voice of a person, and for some use scenes, the isolation without distinction is unreasonable.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problem, the utility model provides a bluetooth headset can play the sound that near clear people said for the user.

The technical scheme of the utility model is that:

the utility model provides a bluetooth headset, including sound collection module, signal amplification circuit, speech recognition analysis module, audio data processing module, audio amplification module and speaker, sound collection module is used for gathering external sound, sound collection module's output termination signal amplification circuit's input, signal amplification circuit's output termination speech recognition analysis module's input, speech recognition analysis module's output termination audio data processing module's input, audio data processing module's output termination audio amplification module's input, audio amplification module's output termination speaker.

Preferably, the Bluetooth headset further comprises a battery and a battery protection circuit, and the battery supplies power to the Bluetooth headset through the battery protection circuit.

Preferably, the sound collection module includes a MEMS microphone and a filter capacitor, and the filter capacitor is used for filtering a signal collected by the MEMS microphone.

Preferably, the signal amplifying circuit is a two-stage amplifying circuit.

Preferably, the voice recognition analysis module is implemented by using a voice chip with the model number of ADS 7819.

Preferably, the audio amplification module is implemented by using a chip with model number AD 260.

Preferably, the audio data processing device further comprises a Bluetooth module, a crystal oscillator module and an indicator light module, wherein the Bluetooth module, the crystal oscillator module and the indicator light module are respectively connected with the audio data processing module.

Preferably, the device further comprises a touch module, and the touch module is connected with the audio data processing module.

After the scheme is adopted, compared with the prior art, the utility model has the following advantage:

the voice collected by the voice collecting module is amplified by the signal amplifying circuit, is identified and analyzed by the voice identifying and analyzing module, screens out the voice of the speaking of a person, and is provided for a user through the audio data processing module, the audio amplifying module and the loudspeaker, so that the user can clearly hear the voice of the speaking of a nearby person;

the signal amplification circuit is preferably a secondary amplification circuit, so that a good amplification effect can be achieved on tiny sounds, collection of distant sounds is achieved, remote hearing aid is achieved, and the circuit is relatively simple;

each module structure is reasonable, and the earphone low power dissipation, the distortion factor is low, and the sound is clear.

Drawings

Fig. 1 is a circuit diagram of an audio data processing module according to a preferred embodiment of the present invention;

fig. 2 is a circuit diagram of a signal amplifying circuit and a voice recognition and analysis module according to a preferred embodiment of the present invention;

fig. 3 is a circuit diagram of an audio amplification module and a speaker according to a preferred embodiment of the present invention;

fig. 4 is a circuit diagram of a battery protection circuit according to a preferred embodiment of the present invention;

fig. 5 is a circuit diagram of a bluetooth module according to a preferred embodiment of the present invention;

fig. 6 is a circuit diagram of a sound collection module according to a preferred embodiment of the present invention;

fig. 7 is a circuit diagram of an indicator light module according to a preferred embodiment of the present invention;

fig. 8 is a circuit diagram of a crystal oscillator module according to a preferred embodiment of the present invention;

fig. 9 is a block diagram of the preferred embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 to 9, a bluetooth headset includes a sound collection module 1, a signal amplification circuit 2, a voice recognition analysis module 3, an audio data processing module 4, an audio amplification module 5 and a speaker 6, where the sound collection module 1 is used to collect external sounds, an output terminal of the sound collection module 1 is connected to an input terminal of the signal amplification circuit 2, an output terminal of the signal amplification circuit 2 is connected to an input terminal of the voice recognition analysis module 3, an output terminal of the voice recognition analysis module 3 is connected to an input terminal of the audio data processing module 4, an output terminal of the audio data processing module 4 is connected to an input terminal of the audio amplification module 5, an output terminal of the audio amplification module 5 is connected to the speaker 6, and through cooperation among the sound collection module 1, the signal amplification circuit 2, the voice recognition analysis module 3, the audio data processing module 4, the audio amplification module 5 and the speaker 6, the hearing aid function is realized.

The voice collected by the voice collecting module 1 is amplified by the signal amplifying circuit 2, is identified and analyzed by the voice identifying and analyzing module 3, and the voice of the person speaking is screened out and provided for the user by the audio data processing module 4, the audio amplifying module 5 and the loudspeaker 6, so that the user can clearly hear the voice of the person speaking nearby.

Further, the bluetooth headset further includes a battery protection circuit 9 and a battery 8, the battery 8 may be an existing battery such as a lithium battery, and a specific circuit of the battery protection circuit 9 is shown in fig. 4, which is not described in detail. The battery 8 is connected with the battery protection circuit 9, the battery protection circuit 9 is connected with the audio data processing module 4, and the battery 8 supplies power to the Bluetooth headset through the battery protection circuit 9.

Further, the sound collection module 1 includes a MEMS microphone and a filter capacitor, and the filter capacitor is used for filtering the signal collected by the MEMS microphone, and the specific circuit is shown in fig. 6, which is not described in detail. In other embodiments, other types of existing microphones may be used to achieve sound collection.

Further, the signal amplification circuit 2 is a two-stage amplification circuit, and is composed of two operational amplifiers U1 and U2, and the specific circuit connection relationship is shown in fig. 2 in detail, and it is not described in detail here that the signal amplification circuit 2 can achieve a good amplification effect on tiny sounds, and achieve collection of sounds at a longer distance, so as to achieve a long-distance hearing aid, and the circuit is relatively simplified, in other embodiments, the signal amplification circuit 2 may also be a single-stage amplification circuit or other amplification circuits such as a three-stage amplification circuit, as long as the signal amplification effect on tiny sounds is good.

Further, the voice recognition analysis module 3 is implemented by using a voice chip with the model number of ADS7819, and the specific circuit connection relationship is shown in fig. 2, which is not described in detail. Through testing, the chip with the model is good in identification effect and low in power consumption. In other embodiments, the speech recognition analysis module 3 can also be implemented by using existing speech chips of other models.

Further, the audio amplifying module 5 is implemented by using a chip with a model number AD260, and the specific circuit connection relationship is shown in fig. 3, which is not described in detail. Tests show that the chip with the model has good amplification effect, low power consumption and simple circuit structure, and in other embodiments, the audio amplification module 5 can also be realized by chips with other existing models.

Further, the bluetooth headset further includes a bluetooth module 7, the bluetooth module 7 is connected with the audio data processing module 4, so that the bluetooth headset has a bluetooth function, and the specific circuit connection relationship of the bluetooth module 7 is shown in detail in fig. 5, but not limited thereto.

Further, the bluetooth headset further includes a crystal module 10, the crystal module 10 is connected to the audio data processing module 4, and provides a basic clock signal for the headset, so as to ensure timeliness and clarity of the sound signal, and the specific circuit connection relationship of the crystal module 10 is detailed in fig. 8, but is not limited thereto.

Further, the bluetooth headset further includes an indicator light module 12, and the indicator light module 12 is connected to the audio data processing module 4 for indicating a corresponding working state, and the specific circuit refers to fig. 7, but is not limited thereto.

Furthermore, the bluetooth headset further comprises a touch module 11, wherein the touch module 11 is connected with the audio data processing module 4 and used for controlling the hearing aid function to be turned on or off, the operation is convenient, and the user experience is good. In other embodiments, the touch module 11 may be replaced with another control module such as a key control module.

More specific circuits and connections are shown in fig. 1-8 and will not be described herein.

The working process is as follows:

the voice acquisition module 1 acquires external voice, voice signals are amplified by the signal amplification circuit 2 and then input into the voice recognition analysis module 3, the voice recognition analysis module 3 extracts voice signals of people in the voice signals and provides the voice signals for the audio data processing module 4 to perform optimization processing such as noise elimination and audio compensation, the processed signals are further amplified by the audio amplification module 5 and provided for users through the loudspeaker 6, and the hearing aid function of the earphone is achieved.

The Bluetooth module 7 receives audio signals from devices such as a mobile phone and a tablet personal computer, provides the audio signals to the audio data processing module 4 for processing such as decoding, and then the audio signals are amplified by the audio amplification module 5 and output to a user through the loudspeaker 6, so that a wireless playing function is realized.

The foregoing is only a preferred embodiment of the present invention, and is not intended to limit the scope of the invention. It should be understood that any modification, equivalent replacement, or improvement made by those skilled in the art after reading the present specification shall fall within the scope of the present invention.

Claims

1. A Bluetooth headset, comprising: the voice recognition and analysis system comprises a voice acquisition module, a signal amplification circuit, a voice recognition and analysis module, an audio data processing module, an audio amplification module and a loudspeaker, wherein the voice acquisition module is used for acquiring external voice, the output end of the voice acquisition module is connected with the input end of the signal amplification circuit, the output end of the signal amplification circuit is connected with the input end of the voice recognition and analysis module, the output end of the voice recognition and analysis module is connected with the input end of the audio data processing module, the output end of the audio data processing module is connected with the input end of the audio amplification module, and the output end of the audio amplification module.

2. The bluetooth headset of claim 1, wherein: the Bluetooth headset further comprises a battery and a battery protection circuit, and the battery supplies power to the Bluetooth headset through the battery protection circuit.

3. The bluetooth headset of claim 1, wherein: the sound collection module comprises an MEMS microphone and a filter capacitor, and the filter capacitor is used for filtering signals collected by the MEMS microphone.

4. The bluetooth headset of claim 1, wherein: the signal amplifying circuit is a two-stage amplifying circuit.

5. The bluetooth headset of claim 1, wherein: the voice recognition analysis module is realized by adopting a voice chip with the model number of ADS 7819.

6. The bluetooth headset of claim 1, wherein: the audio amplification module is realized by adopting a chip with the model number of AD 260.

7. The bluetooth headset of claim 1, wherein: the Bluetooth module, the crystal oscillator module and the indicating lamp module are respectively connected with the audio data processing module.

8. The bluetooth headset of claim 1, wherein: the device also comprises a touch module, and the touch module is connected with the audio data processing module.