CN216928031U

CN216928031U - Vehicle-mounted device with Bluetooth echo cancellation function

Info

Publication number: CN216928031U
Application number: CN202122555710.9U
Authority: CN
Inventors: 王鹤
Original assignee: Shenzhen Wangfuda Information Technology Co ltd
Current assignee: Shenzhen Wangfuda Information Technology Co ltd
Priority date: 2021-10-23
Filing date: 2021-10-23
Publication date: 2022-07-08
Anticipated expiration: 2031-10-23

Abstract

The utility model discloses a vehicle-mounted device with a Bluetooth echo cancellation function, which comprises an echo cancellation system, wherein the echo cancellation system is connected with a third microphone, a rear row of loudspeakers, a first microphone, a second microphone and a front row of loudspeakers, the echo cancellation system comprises a main control center, a sound effect controller, an effect controller, a first echo cancellation controller, a second echo cancellation controller and a third echo cancellation controller, and the sound effect controller, the first echo cancellation controller, the second echo cancellation controller and the third echo cancellation controller are connected to the main control center; in the technical scheme provided by the utility model, the acoustic echo problem caused by side sound and environment generated by signal delay of a circuit is solved through the echo elimination controller, the use effect of the system is improved, the echo problem caused by microphone reception of a hearing aid is solved through the electromagnetic induction coil, and the effectiveness of the system is improved.

Description

Vehicle-mounted device with Bluetooth echo cancellation function

Technical Field

The utility model relates to the technical field of Bluetooth echo cancellation, in particular to a vehicle-mounted device with a Bluetooth echo cancellation function.

Background

Echo is a problem often encountered in the actual use process of communication products and accessories. In addition, no matter analog communication or digital communication, echo is always generated in the using process.

The prior art has the following defects or problems:

1. the echo problem affects the communication effect, reduces the accuracy of message receiving and sending, and causes 'howling' under serious conditions to interfere the communication process.

2. The echo problem can influence the use of the hearing aid, cause the deviation when the hearing aid receives sound signals, influence the cognition of hearing-impaired people on sound and influence the learning use.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a vehicle-mounted device with a Bluetooth echo cancellation function aiming at the defects in the prior art so as to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme:

the vehicle-mounted device with the Bluetooth echo elimination function comprises an echo elimination system, wherein the echo elimination system is connected with a third microphone, a rear row of loudspeakers, a first microphone, a second microphone and a front row of loudspeakers;

the echo cancellation system comprises a main control center, a sound effect controller, a power controller, a first echo cancellation controller, a second echo cancellation controller and a third echo cancellation controller, wherein the sound effect controller, the power controller, the first echo cancellation controller, the second echo cancellation controller and the third echo cancellation controller are connected to the main control center.

Optionally, the echo cancellation system is connected with an electromagnetic induction coil, and the electromagnetic induction coil is connected with the efficacy controller through a main control center.

Optionally, the echo cancellation system is connected to a first key and a second key, and the electromagnetic induction coil is connected to the front row of speakers through the efficacy controller.

Optionally, the third microphone is connected to the first echo cancellation controller, the first echo cancellation controller is connected to the sound effect controller, the sound effect controller is connected to the efficacy controller, and the efficacy controller is connected to the rear-row speaker.

Optionally, the first microphone and the second microphone are connected with the second echo cancellation controller and the third echo cancellation controller through a main control center, the second echo cancellation controller and the third echo cancellation controller are connected with the sound effect controller, and the efficacy controller is connected with the front-row loudspeaker.

Optionally, the echo cancellation system is connected to a plurality of interfaces, and the plurality of interfaces have the same size.

Compared with the prior art, the utility model provides the vehicle-mounted device with the Bluetooth echo cancellation function, which has the following beneficial effects:

1. the utility model receives the sound signal of the microphone through the main control center in the echo eliminating system by arranging the echo eliminating controller, the sound signal in the microphone is subjected to echo elimination through the echo eliminating controller, the sound signal for eliminating the echo is subjected to centralized debugging of the sound effect controller and the efficacy controller, the sound signal of the microphone is converted into sound by the front row of loudspeakers and the rear row of loudspeakers to be emitted, the problems of side sound generated by signal delay of a circuit and echo acoustics caused by the environment are solved, and the use effect of the system is improved;

2. according to the utility model, the electromagnetic induction coil is arranged, the front row of loudspeakers operates simultaneously, the electromagnetic induction coil operates to convert the sound signal into the electromagnetic signal with specific frequency, the induction coil in the hearing aid cuts the magnetic line of force in the magnetic field to generate current, and then the sound signal is amplified, so that the problem of echo of the hearing aid caused by sound reception of a microphone is solved, and the effectiveness of the system is improved.

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 structural view of the present invention;

FIG. 2 is a schematic diagram of the structure of the present invention;

FIG. 3 is a schematic diagram of the structural interface of the present invention.

In the figure: 1. an echo cancellation system; 2. a master control center; 3. a sound effect controller; 4. an efficacy controller; 5. A third microphone; 6. a first echo cancellation controller; 7. a rear row of loudspeakers; 8. a first microphone; 9. a second microphone; 10. a second echo cancellation controller; 11. a third echo cancellation controller; 12. a front row of loudspeakers; 13. an electromagnetic induction coil; 14. a first key; 15. and a second key.

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 the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be further noted that, unless otherwise specifically stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, connected through an intermediate medium, or connected through the insides of two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1-3, in this embodiment: the vehicle-mounted device with the Bluetooth echo cancellation function comprises an echo cancellation system 1, wherein the echo cancellation system 1 is connected with a third microphone 5, a rear row of loudspeakers 7, a first microphone 8, a second microphone 9 and a front row of loudspeakers 12;

the echo cancellation system 1 comprises a main control center 2, a sound effect controller 3, a power controller 4, a first echo cancellation controller 6, a second echo cancellation controller 10 and a third echo cancellation controller 11, wherein the sound effect controller 3, the power controller 4, the first echo cancellation controller 6, the second echo cancellation controller 10 and the third echo cancellation controller 11 are connected to the main control center 2; the first echo eliminating controller 6, the second echo eliminating controller 10 and the third echo eliminating controller 11 are used for eliminating echoes of sound signals in the third microphone 5, the first microphone 8 and the second microphone 9, the basic method of the echo elimination is that an audio signal is synchronously obtained at the output end of a sound source, the signal is subjected to displacement and phase reversal with certain time delay, simultaneously the amplitude of the signal is amplified to the average amplitude value range of a secondary sound source according to different use conditions, and the processed signal and the signal at the input end of the sound source are subjected to logic addition processing, so that the echo signal is eliminated. Other voice signals are normally input into the system because the signals are not offset, thereby solving the problem of communication interference caused by echo.

The echo eliminating system 1 is connected with an electromagnetic induction coil 13, and the electromagnetic induction coil 13 is connected with the efficacy controller 4 through the main control center 2; the front row of loudspeakers 12 operates and the electromagnetic induction coil 13 operates at the same time, acoustic signals are converted into electromagnetic signals with specific frequency, the induction coil inside the hearing aid cuts magnetic lines in a magnetic field to generate current, and then the current is amplified, so that the problem of echo of the hearing aid caused by microphone sound reception is solved.

The echo eliminating system 1 is connected with a first key 14 and a second key 15, and an electromagnetic induction coil 13 is connected with a front row of loudspeakers 12 through an efficacy controller 4; a first key 14 and a second key 15 are arranged to control the operation switch of the system.

The third microphone 5 is connected with a first echo cancellation controller 6, the first echo cancellation controller 6 is connected with a sound effect controller 3, the sound effect controller 3 is connected with a efficacy controller 4, and the efficacy controller 4 is connected with a rear row loudspeaker 7; the acoustic signal in the third microphone 5 is subjected to echo cancellation by passing through the first echo cancellation controller 6, and the acoustic signal in the third microphone 5 is subjected to echo cancellation.

The first microphone 8 and the second microphone 9 are connected with the second echo cancellation controller 10 and the third echo cancellation controller 11 through the main control center 2, the second echo cancellation controller 10 and the third echo cancellation controller 11 are connected with the sound effect controller 3, and the efficacy controller 4 is connected with the front row of loudspeakers 12; the sound signals of the first microphone 8 and the second microphone 9 pass through the second echo cancellation controller 10 and the third echo cancellation controller 11, and the echo of the sound signals in the first microphone 8 and the second microphone 9 is cancelled.

The echo eliminating system 1 is connected with a plurality of interfaces, and the plurality of interfaces have the same size; a plurality of interfaces are arranged, so that an external power supply and a plurality of indicator lamps can be conveniently connected.

The working principle and the using process of the utility model are as follows: the interface is connected with an external power supply, the first key 14 and the second key 15 are opened, the main control center 2 in the echo eliminating system 1 is used for receiving the sound signals of the third microphone 5, the first microphone 8 and the second microphone 9, the sound signals in the third microphone 5 pass through the first echo eliminating controller 6, the sound signals of the first microphone 8 and the second microphone 9 pass through the second echo eliminating controller 10 and the third echo eliminating controller 11, the echo elimination is carried out on the sound signals in the third microphone 5, the first microphone 8 and the second microphone 9, the sound signals for eliminating the echo pass through the centralized debugging of the sound effect controller 3 and the effect controller 4, the sound signals of the third microphone 5 are converted into sound by the front row loudspeaker 12 to be emitted, the sound signals in the first microphone 8 and the second microphone 9 are converted into sound by the rear row loudspeaker 7, the front row loudspeaker 12 operates and the electromagnetic induction coil 13 operates, the acoustic signal is converted into an electromagnetic signal with a specific frequency, and is amplified after the current is generated by cutting magnetic lines in a magnetic field through an induction coil in the hearing aid, so that the problem of echo caused by sound reception of a microphone of the hearing aid is solved, and the effectiveness of the system is improved.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or any other related technical fields directly/indirectly applied to the present invention are included in the scope of the present invention.

Claims

1. The vehicle-mounted device with the Bluetooth echo cancellation function is characterized in that: the anti-echo system comprises an anti-echo system (1), wherein the anti-echo system (1) is connected with a third microphone (5), a rear row of loudspeakers (7), a first microphone (8), a second microphone (9) and a front row of loudspeakers (12);

the echo cancellation system (1) comprises a master control center (2), an audio effect controller (3), an efficacy controller (4), a first echo cancellation controller (6), a second echo cancellation controller (10) and a third echo cancellation controller (11), wherein the audio effect controller (3), the efficacy controller (4), the first echo cancellation controller (6), the second echo cancellation controller (10) and the third echo cancellation controller (11) are connected to the master control center (2).

2. The in-vehicle device with the bluetooth echo cancellation function according to claim 1, wherein: the echo cancellation system (1) is connected with an electromagnetic induction coil (13), and the electromagnetic induction coil (13) is connected with the efficacy controller (4) through a master control center (2).

3. The vehicle-mounted device with the Bluetooth echo cancellation function according to claim 2, wherein: the echo cancellation system (1) is connected with a first key (14) and a second key (15), and the electromagnetic induction coil (13) is connected with the front row of loudspeakers (12) through the efficacy controller (4).

4. The in-vehicle device with the bluetooth echo cancellation function according to claim 1, wherein: the third microphone (5) is connected with the first echo cancellation controller (6), the first echo cancellation controller (6) is connected with the sound effect controller (3), the sound effect controller (3) is connected with the efficacy controller (4), and the efficacy controller (4) is connected with the rear row of loudspeakers (7).

5. The in-vehicle device with the bluetooth echo cancellation function according to claim 1, wherein: the first microphone (8) and the second microphone (9) are connected with the second echo cancellation controller (10) and the third echo cancellation controller (11) through the master control center (2), the second echo cancellation controller (10) and the third echo cancellation controller (11) are connected with the sound effect controller (3), and the efficacy controller (4) is connected with the front row of loudspeakers (12).

6. The in-vehicle device with the bluetooth echo cancellation function according to claim 1, wherein: the echo cancellation system (1) is connected with a plurality of interfaces, and the plurality of interfaces are the same in size.