CN215529287U

CN215529287U - Active audio amplifier based on DSP treater

Info

Publication number: CN215529287U
Application number: CN202120958865.4U
Authority: CN
Inventors: 龚茂松
Original assignee: Guangzhou Toosound Electronic Technology Co ltd
Current assignee: Guangzhou Toosound Electronic Technology Co ltd
Priority date: 2021-05-07
Filing date: 2021-05-07
Publication date: 2022-01-14
Anticipated expiration: 2031-05-07

Abstract

The utility model discloses an active sound box based on a DSP processor, which comprises: the loudspeaker box body install audio frequency processing circuit board in the loudspeaker box body, the welding has audio frequency input interface, audio frequency decoding chip, audio frequency treater, audio player and radio frequency module on the audio frequency processing circuit board, the audio frequency decoding chip adopts the PCM9211 chip, the audio frequency treater adopts the DSP treater, audio frequency input interface with radio frequency module respectively with the input of audio frequency decoding chip is connected, the output of audio frequency decoding chip with the input of audio frequency treater is connected, the output of audio frequency treater with the audio player is connected. The utility model adopts the DSP as the audio processor, so that all audio signals connected to the sound box can adjust the balance parameters, the music heard in the whole place is more vivid, the language is clearer, and the sound pressure level is more uniform.

Description

Active audio amplifier based on DSP treater

Technical Field

The utility model relates to the technical field of sound boxes, in particular to an active sound box based on a DSP processor.

Background

The loudspeaker box is the last link of the whole sound system and is equipment for converting sound electric signals into sound signals which can be heard by human ears. In the traditional sound system, a sound box only exists in a single body, and equipment such as a power amplifier, an audio processor and the like is arranged in front of the sound box, which is necessary for large projects. However, the cost and maintenance cost of the whole equipment in the mobile performance or small video and audio places are limited, and the requirement on professional knowledge of a practitioner is high due to the large number of the equipment. Therefore, the active speaker is widely used.

The active sound box is a sound box with a self-contained power amplifier in the sound box. The power amplifiers are specially used for pushing the loudspeaker in the sound box, and due to the special matching design, the power amplifiers can be better used for pushing the loudspeaker in the sound box, so that a user does not need to consider the power of the power amplifiers and the problems of impedance matching and the like.

However, the existing active sound box has a single function, cannot dynamically adjust parameters according to specific requirements, and has a limited type for receiving and processing audio signals.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an active sound box based on a DSP (digital signal processor), and aims to solve the problems.

The utility model is realized by the following steps:

an active speaker based on a DSP processor, comprising: the loudspeaker box body install audio frequency processing circuit board in the loudspeaker box body, the welding has audio frequency input interface, audio frequency decoding chip, audio frequency treater, audio player and radio frequency module on the audio frequency processing circuit board, the audio frequency decoding chip adopts the PCM9211 chip, the audio frequency treater adopts the DSP treater, audio frequency input interface with radio frequency module respectively with the input of audio frequency decoding chip is connected, the output of audio frequency decoding chip with the input of audio frequency treater is connected, the output of audio frequency treater with the audio player is connected.

Furthermore, a plurality of digital auxiliary input interfaces and a digital auxiliary output interface are welded on the circuit board, the number of the digital auxiliary input interfaces is not more than 3, the plurality of digital auxiliary input interfaces are respectively connected with the input end of the audio decoding chip, and the digital auxiliary output interface is connected with the output end of the audio decoding chip.

Furthermore, two external auxiliary sound box output interfaces are welded on the circuit board, and the external auxiliary sound box output interfaces are connected with the output end of the audio processor.

Further, the back of audio amplifier box is equipped with interface panel, the last liquid crystal display that installs of interface panel, liquid crystal display with audio processor's output is connected for show volume decibel value.

Furthermore, an interface panel of the sound box body is also provided with an equipment cascade LINK interface, a network interface, a USB interface, a 220V voltage interface and a signal indicator lamp.

Furthermore, a cooling fan is further installed on the back of the sound box body.

Furthermore, the sound box body is made of wood.

Compared with the prior art, the utility model has the beneficial effects that: the utility model adopts the DSP processor as the audio processor, so that all audio signals accessed to the sound box can adjust the balance parameters of the audio signals, the music heard in the whole place is more vivid, the language is clearer, the sound pressure level is more uniform, in addition, the 24-bit data processing from 16kHz to 96kHz can be supported through the PCM9211 audio decoding chip, and the audio signal processing device is provided with up to 12 multiplexing input ends and 3 PCM input ends, and other audio signals are allowed to be multiplexed to the DSP processor. The utility model also provides two external auxiliary sound box output interfaces which can be connected with two passive auxiliary sound boxes, so that sound energy output by the sound boxes has stronger power and can be applied to wider fields and fields.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic diagram of the circuit configuration of the present invention;

fig. 2 is a schematic diagram of a panel interface of the present application.

100, an audio input interface; 200. an audio decoding chip; 300. an audio processor; 400. a radio frequency module; 500a, 500b, 500c, a digital auxiliary input interface; 600. an audio player; 700a-700b, an external auxiliary sound box output interface; 800. A digital auxiliary output interface; 1. a sound box body; 101. a liquid crystal display screen; 102. a signal indicator light; 103. a network interface; 104. a USB interface; 105. the equipment is connected with a LINK interface in a cascade mode.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in fig. 1, an active speaker based on DSP processor includes: the loudspeaker box body 1 install audio frequency processing circuit board in the loudspeaker box body 1, the welding has audio frequency input interface 100, audio frequency decoding chip 200, audio frequency treater 300, audio player 600 and radio frequency module 400 on the audio frequency processing circuit board, audio frequency decoding chip 200 adopts the PCM9211 chip, audio frequency treater 300 adopts the DSP treater, audio frequency input interface 100 with radio frequency module 400 respectively with audio frequency decoding chip 200's input is connected, audio frequency decoding chip 200's output with audio frequency treater 300's input is connected, audio frequency treater 300's output with audio player 600 connects.

In the embodiment of the application, the audio decoding chip 200 adopts a PCM9211 chip, and a stereo ADC digital-to-analog converter and an S/PDIF transceiver are integrated in the PCM9211 chip, so that 24-bit data processing from 16kHz to 96kHz can be supported. Having up to 12 multiplexing inputs and 3 PCM inputs allows multiplexing of other audio signals and S/PDIF signals together to the DSP processor.

Further, a plurality of digital auxiliary input interfaces (500a, 500b, 500c) and a digital auxiliary output interface 800 are welded on the circuit board, the number of the digital auxiliary input interfaces (500a, 500b, 500c) is not more than 3, the plurality of digital auxiliary input interfaces (500a, 500b, 500c) are respectively connected with the input end of the audio decoding chip 200, and the digital auxiliary output interface 800 is connected with the output end of the audio decoding chip 200.

Further, as shown in fig. 2, two external auxiliary speaker output interfaces (700a, 700b) are further welded on the circuit board, and the external auxiliary speaker output interfaces (700a, 700b) are connected with the output end of the audio processor 300. The external auxiliary sound box output interfaces (700a and 700b) can be externally connected with passive sound boxes, the auxiliary active sound boxes are played, and the applicable field and field are wider. The existing active sound box can only be externally connected with 1 auxiliary passive sound box, and the application supports the externally connected two auxiliary passive sound boxes.

Further, as shown in fig. 2, the back of the sound box body 1 is provided with an interface panel, the interface panel is provided with a liquid crystal display 101, and the liquid crystal display 101 is connected with the output end of the audio processor 300 and used for displaying the volume decibel value.

Further, an interface panel of the sound box body 1 is further provided with a device cascade LINK interface, a network interface, a USB interface 104, a 220V voltage interface, and a signal indicator lamp 102.

The device cascade LINK interface, the network interface, the USB interface 104, the 220V voltage interface, and the signal indicator light 102 are respectively connected to the audio processor 300.

In the embodiment of the present application, the USB interface 104 may be connected to a debugging software in the notebook computer to adjust parameters such as equalization, voltage limit, amplitude limit, and gain, so as to achieve a perfect sound quality effect.

In one example, the signal indicator lights 102 include a protection signal light, a distortion signal light, and a normal signal light.

In addition, the network interface includes an RS485IN interface and an RS485OUT interface. The connection with the wired network can be made through the network interface.

Further, a cooling fan is further installed on the back of the sound box body 1.

Further, the material of the sound box body 1 is wood material.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An active audio amplifier based on DSP treater, its characterized in that includes: the loudspeaker box body install audio frequency processing circuit board in the loudspeaker box body, the welding has audio frequency input interface, audio frequency decoding chip, audio frequency treater, audio player and radio frequency module on the audio frequency processing circuit board, the audio frequency decoding chip adopts the PCM9211 chip, the audio frequency treater adopts the DSP treater, audio frequency input interface with radio frequency module respectively with the input of audio frequency decoding chip is connected, the output of audio frequency decoding chip with the input of audio frequency treater is connected, the output of audio frequency treater with the audio player is connected.

2. The active speaker based on the DSP processor as claimed in claim 1, wherein a plurality of digital auxiliary input interfaces and a digital auxiliary output interface are further soldered on the circuit board, the number of the digital auxiliary input interfaces is not more than 3, the plurality of digital auxiliary input interfaces are respectively connected to the input terminal of the audio decoding chip, and the digital auxiliary output interface is connected to the output terminal of the audio decoding chip.

3. The active speaker based on the DSP processor as recited in claim 1, wherein two external auxiliary speaker output interfaces are further soldered on the circuit board, and the external auxiliary speaker output interfaces are connected to the output terminal of the audio processor.

4. The active speaker based on the DSP processor as recited in claim 1, wherein an interface panel is disposed on a back of the speaker box, the interface panel is mounted with a liquid crystal display, and the liquid crystal display is connected to the output end of the audio processor for displaying a decibel value of a volume.

5. The active speaker based on the DSP processor as recited in claim 4, wherein the interface panel of the speaker box body is further installed with a LINK interface, a network interface, a USB interface, a 220V voltage interface and a signal indicator light.

6. The active speaker based on the DSP processor of claim 1, wherein a heat dissipation fan is further installed on a back surface of the speaker box body.

7. The active speaker based on the DSP processor as recited in claim 1, wherein the speaker housing is made of wood.