CN213280070U

CN213280070U - Noise reduction sound box control system based on wireless bridging

Info

Publication number: CN213280070U
Application number: CN202022145643.9U
Authority: CN
Inventors: 李明江
Original assignee: Yibin Mingjiang Audio Equipment Co ltd
Current assignee: Yibin Mingjiang Audio Equipment Co ltd
Priority date: 2020-09-25
Filing date: 2020-09-25
Publication date: 2021-05-25
Anticipated expiration: 2030-09-25

Abstract

The utility model discloses a noise reduction sound box control system based on wireless bridging, which is characterized by comprising a DSP control system, an audio input module, an audio processing module and a Type-C interface; the control system comprises a DSP main control chip, a display module, a storage module, a power supply module and an interface circuit; the audio input module comprises a radio, a voice recognition module and an echo elimination module; the audio processing module comprises an audio processor, a power amplifier and a loudspeaker; the Type-C interface comprises a data interface and a power interface, and the first communication module and the second communication module are in wireless bridging through a 4G or 5G network. The utility model discloses a module and audio processor have been eliminated through the echo realized that the audio frequency falls and make an uproar to the at utmost, adopt simultaneously with Type-C interface, easily operation.

Description

Noise reduction sound box control system based on wireless bridging

Technical Field

The utility model relates to a audio amplifier field especially relates to a sound box control system of making an uproar falls based on wireless bridging.

Background

With the development of the AI technology, intelligent voice control becomes a major trend in the development of current electronic devices, which can completely liberate both hands and improve the work efficiency and the user experience. The traditional sound box does not have a voice recognition function, a user cannot control the traditional sound box equipment through voice, and the function is single; the intelligent sound box is directly replaced, the cost is relatively high, and the traditional sound box is not discarded, so that serious waste can be caused. The realization of traditional sound box voice control mainly depends on the acquisition and recognition of voice command data, so that the key point of the voice noise reduction processing in the whole AI control process is, and a single-microphone or even a double-microphone with primary noise reduction capability is difficult to perfectly adapt to the surrounding noisy environment, so that the voice recognition rate is not high, and the user experience is influenced.

The patent of the prior authorized utility model, such as the patent with the patent application number of CN201620291789.5, the patent name of the utility model is a noise reduction sound box, which comprises a box body; the loudspeaker is arranged in the box body; the directional microphone array is arranged on the periphery of the box body, and the microphone signal processing module is connected to the microphone array to convert local sound into a local audio signal and convert environmental noise into an environmental audio signal; the audio signal receiving module is connected with the microphone signal processing module, the digital audio processing module and the audio signal receiving module and used for carrying out phase inversion processing on the environment audio signal to form an inverted environment audio signal and mixing the inverted environment audio signal with the audio signal to form a mixed audio signal; and the audio power amplification module is connected with the digital audio processing module and the loudspeaker and used for receiving the mixed audio signal sent by the digital audio processing module, amplifying the power of the mixed audio signal and then transmitting the amplified power to the loudspeaker. The utility model discloses a solve the unable audio effect scheduling problem of listening to the audio amplifier of guaranteeing when ambient noise is great.

Above-mentioned scheme has some problems, and tone quality is influenced by environmental factor greatly, and audio processor can only reduce the noise of minority, leads to the sound effect poor, generally adopts the interface of a plurality of different signals to be used for charging and data transmission lamp, and the operation is complicated, and is not convenient enough.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sound box control system of making an uproar falls based on wireless bridging, tone quality receives environmental factor to influence greatly, and audio processor can only reduce the noise of small part, leads to the sound effect poor, generally adopts the interface of a plurality of different signals to be used for charging and data transmission lamp, and the operation is complicated, and is not convenient enough.

A noise reduction sound box control system based on wireless bridging comprises a DSP control system, an audio input module, an audio processing module and a Type-C interface;

the control system comprises a DSP main control chip, a display module, a storage module, a power supply module, an interface circuit, a first communication module and a second communication module, wherein the display module, the storage module, the power supply module, the interface circuit, the first communication module and the second communication module are respectively connected with the DSP main control chip;

the audio input module comprises a radio, a voice recognition module and an echo elimination module, the radio, the voice recognition module and the echo elimination module are sequentially connected, and the echo elimination module is connected with the first communication module;

the audio processing module comprises an audio processor, a power amplifier and a loudspeaker, the audio processor, the power amplifier and the loudspeaker are sequentially connected, and the audio processor is connected with the second communication module;

the Type-C interface comprises a data interface and a power interface, the power interface is connected with the power module, and the data interface is connected with the interface circuit.

The loudspeaker box further comprises a remote wireless communication module and a remote terminal, wherein the remote wireless communication module is arranged inside the loudspeaker box body; the DSP main control chip is connected with a remote terminal network through a remote wireless communication module.

Further, the radio adopts a microphone.

Further, the model of the DSP main control chip is TMS320C 6726.

Further, the storage module is a Flash memory.

Further, the model of the power amplifier is TDA 2030.

Furthermore, the sound hole of the loudspeaker is formed in the side wall of the front end of the sound box body, and the loudspeaker is a dome-shaped loudspeaker.

Furthermore, the power supply module is a voltage-stabilizing power supply module, and the voltage-stabilizing chip adopted by the power supply module is a BM1117 chip.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model relates to a sound box control system of making an uproar falls based on wireless bridging through audio input module's setting, has realized audio signal's collection and first processing, has realized audio signal's secondary treatment and broadcast through audio output module's setting.

2. The utility model relates to a sound box control system of making an uproar falls based on wireless bridging sets up Type-C interface, and the characteristic of Type-C interface makes data transmission and power transmission more convenient, easily operates, and the utility model discloses a data interface and power interface adopt same Type-C interface, and the design is more succinct.

Drawings

Fig. 1 is an overall system diagram of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

the control system comprises a DSP main control chip, a display module, a storage module, a power supply module, an interface circuit, a first communication module and a second communication module, wherein the display module, the storage module, the power supply module and the interface circuit are connected with the DSP main control chip respectively;

The working principle of the scheme is briefly described as follows:

in the using process, an audio input module is arranged for collecting audio signals and carrying out primary processing, the front end surface and the rear end surface of the sound box body are respectively provided with a radio, the radio at the front end is used for collecting the audio signals of the sound box body, the radio at the rear end surface is used for collecting the audio signals in the music playing environment, the collection of environmental noise and the sound collection of the sound box body can be realized through the radios and converted into voltage signals, the voice recognition module is used for further processing the voice signals, the accuracy of the audio signal recognition is increased, the echo cancellation module can be used for carrying out secondary processing on the audio signals, particularly echo signals in audio frequency, the influence of the distortion of the radios is avoided, the distortion degree of the noise reduction sound box is reduced, the processed audio signals are transmitted to the DSP main control chip through the first communication module, and the main control chip transmits the audio signals to the audio processor through the second communication module, inverting the ambient audio signal by an audio processor to form an inverted ambient audio signal, and mixing the inverted ambient audio signal with the audio signal to form a mixed audio signal, a power amplifier for amplifying the audio signal, the mixed audio signal is amplified in power and then is played by the loudspeaker, the audio signal can be processed for the first time by the echo eliminating module, can eliminate a small part of environmental noise, the audio processor carries out secondary processing on the audio signal, since the ambient noise is opposite in phase and substantially equal in magnitude to the amplified inverse ambient audio signal after the inversion process, therefore, a large part of environmental noise is offset, the noise reduction degree can be basically 20-40dB after two times of noise reduction treatment, the noise reduction function is greatly improved, and the problems that the audio effect of the listening sound box cannot be guaranteed when the environmental noise is large and the like are solved. The adapter that has Type-C to connect inserts the voltage of power port input 12V for the audio amplifier power supply of making an uproar falls, and data port inserts the front end that has the peripheral hardware conversion equipment that Type-C connects, is used for carrying out data interchange with receiving peripheral hardware conversion equipment rear end interface signal, and data interface and power source can be same Type-C interface in addition, thereby simplify circuit design. The power module is used for providing power for normal operation of the whole sound box system, the display module is used for displaying the electric quantity of the sound box, playing song names and the like, the storage module is used for storing received control instructions and audio data, the storage module comprises a memory and an expandable external memory which are electrically connected with the control processor, and the expandable external memory is reserved with a clamping groove for an external plug-in expansion card and used for storing or reading data on the external plug-in expansion card.

The remote wireless communication module is arranged in the sound box body; the DSP main control chip is connected with a remote terminal through a remote wireless communication module in a network mode, the remote terminal can be a tablet or a mobile phone, and wireless connection is established between the remote terminal and the remote wireless communication module, so that the working condition of the noise reduction sound box can be observed and judged.

Further, the radio adopts the microphone, and the microphone can set up one or more, the utility model discloses be provided with two, be main microphone and vice microphone respectively, main microphone is established audio amplifier body front end in order to acquire the speaker sends the sound of audio amplifier local, it locates to assist the microphone audio amplifier body rear end is in order to acquire ambient noise. And a sound outlet hole or a vibrating membrane corresponding to the loudspeaker 11 is arranged on the side wall of the front end of the rectangular box body.

The sound outlet hole or diaphragm of the speaker 11 is placed at the front end of the rectangular box, and the local sound is basically from the rectangular box.

Furthermore, the model of the DSP main control chip is TMS320C6726, and the TMS320C6726 type DSP chip is adopted, so that the DSP main control chip has the advantages of high operation speed and high efficiency; it should be noted that TMS320C6726 belongs to a 32-bit high-speed floating-point DSP, has a clock maximum frequency of 225MHz, can execute 8 instructions per cycle, has a maximum peak rate of 920MDL0PS or more, has 8 independent functional units, and includes 2 fixed-point and floating-point 32/40-bit arithmetic logic units, 4 fixed-point 32/40-bit arithmetic logic units, and 2 16-bit arithmetic units, and also has a large amount of SRAMs integrated inside the chip.

Furthermore, the storage module adopts a Flash memory as the Flash memory, so that the storage speed is high, the cost is low and the storage space is large.

Furthermore, the model of the power amplifier is TDA2030, the TDA2030 type stereo power amplifier is a stereo power amplifier mainly composed of an integrated circuit TDA2030a, and a typical power amplifier circuit is adopted, so that the power amplifier has the advantages of small distortion, few peripheral elements, high stability, wide frequency response range, high fidelity, large power and the like, and meanwhile, the four operational amplifiers GL324a are adopted to process input audio signals and control high and low tones, so that the tone quality of output sound is further ensured.

Further, the sound hole of speaker sets up in audio amplifier body front end lateral wall, the speaker adopts the dome speaker, and the dome speaker is one of the most extensive electrodynamic type speaker of using in the present audio amplifier, and its biggest advantage is that well high frequency response is excellent and directive property broad. In addition, the method also has the advantages of good transient characteristic, small distortion, good tone quality and the like.

Furthermore, the power module is a voltage-stabilizing power module, the voltage-stabilizing chip adopted by the power module is a BM1117 chip, and the voltage-stabilizing chip is used for ensuring the stability of the voltage to be stabilized.

It is worth noting that: the radio, the voice recognition module, the display module, the storage module and the like in the scheme are common circuits or objects in the prior art, the innovation of the scheme is not in a single circuit, but a plurality of modules and circuits are matched for use, the audio noise reduction is realized to the greatest extent, and meanwhile, a Type-C interface is adopted, so that the operation is easy.

The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims

1. A noise reduction sound box control system based on wireless bridging is characterized by comprising a DSP control system, an audio input module, an audio processing module and a Type-C interface;

2. The noise reduction sound box control system based on wireless bridging according to claim 1, further comprising a remote wireless communication module and a remote terminal, wherein the remote wireless communication module is arranged inside the sound box body; the DSP main control chip is connected with a remote terminal network through a remote wireless communication module.

3. The noise reduction sound box control system based on wireless bridging of claim 2, wherein the radio adopts a microphone.

4. The noise reduction sound box control system based on wireless bridging of claim 1, wherein the model of the DSP main control chip is TMS320C 6726.

5. The noise reduction sound box control system based on wireless bridging of claim 1, wherein the storage module is a Flash memory.

6. The noise reduction sound box control system based on wireless bridging of claim 1, wherein the power amplifier is model number TDA 2030.

7. The noise reduction sound box control system based on wireless bridging as claimed in claim 1, wherein the sound hole of the speaker is disposed on the side wall of the front end of the sound box body, and the speaker is a dome-shaped speaker.

8. The noise reduction sound box control system based on wireless bridging of claim 1, wherein the power module is a regulated power supply module, and a voltage regulation chip adopted by the power module is a BM1117 chip.