CN211406189U - Sound box circuit and sound box - Google Patents

Abstract

The utility model relates to an audio amplifier circuit and audio amplifier, receive audio analog signal through audio input interface, audio signal is through low noise amplifier and potentiometre regulation signal size, convert audio analog signal into audio digital signal through analog to digital converter again, and transmit to processing chip, control chip receives the control command that wireless remote control receiving module received, and control processing chip handles the back output to audio digital signal, the audio digital signal of output converts audio analog signal into audio analog signal through digital to analog converter, audio analog signal transmits to potentiometre and power amplifier, finally transmit to audio output interface output audio signal.

Description

Sound box circuit and sound box

Technical Field

The utility model relates to a speaker equipment especially relates to a speaker circuit and audio amplifier.

Background

In recent years, with the development of audio entertainment industry, various sound box devices are increasingly popularized, and in the using process, the functional requirements of users on sound boxes are gradually increased, while most of the existing sound box devices are simple in function and only have audio amplification and playing functions.

To the multi-functional demand of user to audio amplifier equipment, the utility model designs an audio amplifier circuit and audio amplifier.

Disclosure of Invention

Based on above circumstances, the utility model provides an audio amplifier circuit and audio amplifier solves the multi-functional demand problem of audio amplifier, the concrete technical scheme of the utility model as follows:

the utility model provides a sound box circuit, sound box circuit includes audio input interface, adc, signal processing chip, digital-to-analog converter and audio output interface, audio input interface is connected with adc's input end, processing chip respectively with adc's output port with adc's input port connection, adc's output port with audio output interface connects.

Furthermore, the sound box circuit further comprises a low-noise amplifier, one end of the low-noise amplifier is connected with the audio input interface, and the other end of the low-noise amplifier is connected with the analog-to-digital converter.

Furthermore, the sound box circuit further comprises a potentiometer, one end of the potentiometer is connected with the low-noise amplifier, and the other end of the potentiometer is connected with the analog-to-digital converter.

Further, the audio input interface comprises a microphone input interface, an accompaniment input interface, a Bluetooth input interface and a musical instrument input interface.

Furthermore, the sound box circuit further comprises a power amplifier, wherein one end of the power amplifier is connected with the digital-to-analog converter, and the other end of the power amplifier is connected with the audio output interface.

Further, the audio output interface comprises a live output interface, an earphone output interface and a loudspeaker output interface.

Furthermore, the sound box circuit further comprises a control chip, and one end of the control chip is connected with the signal processing chip.

Furthermore, the sound box circuit further comprises a storage module, an operation module and a wireless receiving module, wherein the storage module, the operation module and the wireless receiving module are respectively connected with the control chip.

Furthermore, the signal processing chip is connected with the analog-to-digital converter and the digital-to-analog converter through built-in audio buses of the integrated circuit respectively.

The utility model also provides a sound box, including foretell audio amplifier circuit.

The utility model provides an audio amplifier circuit and audio amplifier, receive audio frequency analog signal through audio input interface, audio signal is through low noise amplifier and potentiometre regulation signal size, convert audio frequency analog signal into audio digital signal through analog to digital converter again, and transmit to processing chip, control chip receives the control command that wireless receiving module received, and control processing chip handles the back output to audio digital signal, the audio frequency digital signal of output converts audio frequency analog signal into audio frequency analog signal through digital to analog converter, audio frequency analog signal transmits to potentiometre and power amplifier, finally transmit to audio output interface output audio signal.

Drawings

Fig. 1 is a schematic circuit diagram of an embodiment of a speaker circuit of the present invention.

Detailed Description

The microphone bracket of the present invention will be further described with reference to the accompanying drawings.

For the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; certain well-known structures in the drawings and omissions of their description may be apparent to those skilled in the art. The same or similar reference numerals correspond to the same or similar components.

The utility model discloses a sound box circuit has the function of many inputs and many outputs, can carry out remote control simultaneously.

As shown in fig. 1, this embodiment is a speaker circuit, which includes an audio input interface 101, an analog-to-digital converter 102, a signal processing chip 103, a digital-to-analog converter 104, an audio output interface 105, a low noise amplifier 106, a power amplifier 107, a potentiometer 108, a control chip 109, an operating module 110, a storage module 111, and a wireless receiving module 112, where the audio input interface 101 is configured to receive an analog audio signal and transmit the analog audio signal to the analog-to-digital converter 102 and the low noise amplifier 106, where a signal transmitted to the low noise amplifier 106 is processed by the low noise amplifier 106 and the potentiometer 108 and then transmitted to the analog-to-digital converter 102, the analog-to-digital converter 102 processes and converts the received audio analog signal and outputs an audio digital signal to the signal processing chip 103, the audio digital signal processed by the signal processing chip 103 is output to the digital-to the digital converter 104, the digital-to-analog, the output audio analog signals are respectively transmitted to the audio output interface 105, the power amplifier 107 and the potentiometer 108, wherein the power amplifier 107 amplifies and transmits the received audio analog signals to the audio output interface 105 for output, the potentiometer 108 can adjust the size of the received audio analog signals and transmit the adjusted audio analog signals to the power amplifier 107, the power amplifier 107 re-amplifies and transmits the audio analog signals to the audio output interface 105, and in summary, the sound box circuit of the present embodiment can process and output the received audio analog signals. In this embodiment, the control chip 109 is connected to the signal processing chip 103, the operation module 110, the storage module 111, and the wireless receiving module 112, wherein the wireless receiving module 112 can receive an external wireless control signal and transmit the received wireless control signal to the control chip 109, and the control chip 109 may be a logic function control chip, and can control the signal processing chip 103 to process the audio digital signal and control the program stored in the storage module 111 to operate in the operation module 110 according to the received control chip.

Further, the number of the audio input interfaces 101 is plural, and may be a microphone input interface, an accompaniment input interface, a bluetooth input interface, a musical instrument input interface, and the like, and the input interfaces may simultaneously transmit the same low noise amplifier 106, for example, the accompaniment input and the bluetooth input interface simultaneously transmit signals to the low noise amplifier 106.

Further, the number of the analog-to-digital converters 102 may be multiple, and each of the multiple may correspond to a different input interface.

Further, the number of the audio output interfaces 105 may be plural, and may be a live output interface, an earphone output interface, a speaker output interface, and the like.

To explain, the number of the digital-to-analog converters 104 may be plural, and the plural digital-to-analog converters correspond to different audio output interfaces 105 or different power amplifiers 107 and potentiometers 108, respectively.

To explain further, the signal processing chip 103 is connected to the analog-to-digital converter 102 and the digital-to-analog converter 104 through the integrated circuit built-in audio bus, respectively.

The utility model also relates to an audio amplifier, including the audio amplifier circuit of above-mentioned embodiment.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. The utility model provides a loudspeaker box circuit which characterized by: the sound box circuit comprises an audio input interface, an analog-to-digital converter, a signal processing chip, a digital-to-analog converter and an audio output interface, wherein the audio input interface is connected with the input end of the analog-to-digital converter, the processing chip is respectively connected with the output port of the analog-to-digital converter and the input port of the digital-to-analog converter, and the output port of the analog-to-digital converter is connected with the audio output interface.

2. The speaker circuit of claim 1, further comprising a low noise amplifier having one end connected to the audio input interface and another end connected to an analog-to-digital converter.

3. The speaker circuit of claim 2, further comprising a potentiometer having one end connected to the low noise amplifier and the other end connected to the analog to digital converter.

4. A speaker circuit as claimed in claim 1, wherein the audio input interface comprises a microphone input interface, an accompaniment input interface, a bluetooth input interface, and a musical instrument input interface.

5. The speaker circuit of claim 1, further comprising a power amplifier, one end of the power amplifier being connected to the digital-to-analog converter and the other end of the power amplifier being connected to the audio output interface.

6. The speaker circuit of claim 1, wherein the audio output interfaces include a live output interface, a headphone output interface, and a speaker output interface.

7. The speaker circuit of claim 1, further comprising a control chip, wherein one end of the control chip is connected to the signal processing chip.

8. The speaker circuit of claim 7, further comprising a storage module, an operation module, and a wireless receiving module, wherein the storage module, the operation module, and the wireless receiving module are respectively connected to the control chip.

9. The speaker circuit of claim 1, wherein the signal processing chip is connected to the analog-to-digital converter and the digital-to-analog converter via an integrated circuit built-in audio bus, respectively.

10. An acoustic enclosure comprising the acoustic enclosure circuit of any one of claims 1-9.

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