CN210518800U

CN210518800U - DSP power amplifier, DSP power amplifier and DSP power amplifier sound system

Info

Publication number: CN210518800U
Application number: CN201920617562.9U
Authority: CN
Inventors: 汪迟生; 梁小玲; 陈伟
Original assignee: Guangzhou Xindu Sound Equipment Co ltd
Current assignee: Guangzhou Xindu Sound Equipment Co ltd
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2020-05-12
Anticipated expiration: 2029-04-30

Abstract

The utility model discloses a DSP power amplifier, including audio processor and power amplifier, audio processor forms a plurality of channel output port, the power amplifier includes a plurality of power amplifier unit, the power amplifier unit is connected respectively channel output port carries out the power amplifier to the audio signal of output and handles. The frequency division and power amplifier parameters of the utility model can be adjusted at will, which has various effects, is convenient for the client to adjust at will on site, and achieves the best tone quality effect, the audio digital processing chip is embedded in the power amplifier, and can be adjusted at will by software; the frequency division amplification can be carried out on the required part only, and the useless audio part is not amplified, so that the energy-saving effect is achieved.

Description

DSP power amplifier, DSP power amplifier and DSP power amplifier sound system

Technical Field

The utility model relates to an audio processing equipment technical field especially relates to a DSP power amplifier, DSP power amplifier and DSP power amplifier sound system.

Background

The sound system is used as a commonly used audio playing system and applied to a plurality of life and work scenes of people, and some application scenes have higher requirements on the application of the sound system and have higher corresponding technical indexes. At present, the cost of a set of good sound equipment is reduced, the sound box occupies most of the cost, the effect is only passively changed, and the debugging and playing tone quality of a sound system are two important aspects of the consideration of consumers. Some current stereo set power amplifier systems, operating parameter mostly are set for through the hardware and are made according to the electronic circuit parameter, have set up by the mill and just can't change, and the flexibility and the practicality of parameter debugging are relatively poor. For example, in the current frequency division and power amplification, it is common to amplify the whole audio signal, then send the amplified audio signal to the inside of the sound box through a frequency divider formed by passive devices, and send the amplified audio signal to respective units to restore the sound.

Disclosure of Invention

The utility model is directed to the above-mentioned problem, a DSP power amplifier is provided. In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a DSP power amplifier, includes audio processor and amplifier, audio processor forms a plurality of channel output port, the amplifier includes a plurality of power amplifier unit, power amplifier unit connects respectively channel output port carries out the power amplifier to the audio signal of output and handles.

As a preferred technical solution, the audio processor is a DSP audio processor.

Furthermore, the number of the channel output ports is four, and the number of the channel output ports is four correspondingly.

Furthermore, the device also comprises an adjusting module, which is used for adjusting the four frequency division bands of the audio processor and the power amplification power of the power amplifier.

The utility model discloses another aspect provides a DSP power amplifier, contains above-mentioned DSP power amplifier.

Furthermore, the adjusting module includes a first adjusting unit, the first adjusting unit is used for adjusting the amplification powers of the four power amplifier units, and a high-low volume adjusting button is arranged on the power amplifier panel to form a volume adjusting module of the power amplifier.

Furthermore, the adjusting module includes a second adjusting unit, the second adjusting unit is connected to the DSP audio processor, and a USB debugging interface is disposed on the power amplifier panel to form a debugging module.

The utility model also provides a DSP power amplifier sound system contains above-mentioned DSP power amplifier and audio amplifier, the audio amplifier establish the frequency divider in not and by the power amplifier unit drive.

Still further, the enclosure includes a tweeter and a woofer.

Furthermore, the number of the sound boxes is two.

Compared with the prior art, the utility model discloses possess following advantage:

the frequency division and power amplifier parameters of the utility model can be adjusted at will, which has various effects, is convenient for the client to adjust at will on site, and achieves the best tone quality effect, the audio digital processing chip is embedded in the power amplifier, and can be adjusted at will by software; the frequency division amplification can be carried out on the required part only, and the useless audio part is not amplified, so that the energy-saving effect is achieved.

Drawings

FIG. 1 is a schematic diagram of the DSP power amplifier system of the present invention;

FIG. 2 is a block diagram of the DSP audio processor of the present invention;

FIG. 3 is a schematic diagram of the USB debug interface circuit of the present invention;

fig. 4 is a schematic diagram of a DSP debugging interface according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a DSP debugging interface according to an embodiment of the present invention;

fig. 6 is a third schematic diagram of a DSP debugging interface according to an embodiment of the present invention;

fig. 7 is a schematic diagram of a DSP debugging interface according to an embodiment of the present invention;

fig. 8 is a schematic diagram of a DSP debugging interface according to an embodiment 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.

Referring to fig. 1 to 3, a DSP power amplifier includes an audio processor and a power amplifier, where the audio processor forms a plurality of channel output ports, and the power amplifier includes a plurality of power amplifier units, and the power amplifier units are respectively connected to the channel output ports and perform power amplifier processing on output audio signals. Referring to the drawings, in one embodiment, the audio processor is a DSP audio processor, the DSP audio processor includes two inputs, i.e., an a channel input and a B channel input, and audio signals of the a channel input and the B channel input are divided by the DSP audio processor to form 4 outputs, i.e., an a channel low-frequency signal output, an a channel high-frequency signal output, a B channel low-frequency signal output, and a B channel high-frequency output, respectively; correspondingly, the amplifier in this embodiment includes an a-channel low-frequency power amplifier module, an a-channel high-frequency power amplifier module, a B-channel low-frequency power amplifier module, and a B-channel high-frequency power amplifier module, and is configured to perform power amplification processing on the four channels of output audio signals subjected to frequency division by the DSP audio processor.

Referring to fig. 2, the DSP audio processor in this embodiment adopts a DA3024B audio processing module, the DA3024B is a professional digital audio processing module with 2 inputs and 4 outputs, and an ARM processor is used in conjunction with an embedded operating system, a full digital ADI algorithm, and a debugging system, so as to achieve an elegant sound effect and a simple and intuitive debugging manner, and modify a certain specific frequency point on music or human voice. Each input channel of the DA3024B has 4 sections of processing modules such as parametric equalization and compressor, which can finely process the sound source characteristics. Each output channel is also provided with a 9-end parameter balance, time delay, high-low pass and amplitude limiter, and the output signal size can be limited, so that the power amplifier and the sound box are protected. Referring to fig. 4-8, an embodiment of the present invention is an adjustment interface.

The utility model discloses a DSP power amplifier has contained the adjustment module, is used for the adjustment four ways frequency division frequency channel of audio processor and the power amplification power of amplifirer. Referring to the figure, a back panel of the DSP power amplifier includes two input interfaces, four output interfaces, and a power input interface, and a front panel of the power amplifier includes a power switch, a volume adjustment key, and a debugging interface. Specifically, the adjusting module includes a first adjusting unit, where the first adjusting unit is used to adjust the amplification powers of the four power amplifier units, and a high/low volume adjusting button is arranged on the power amplifier panel to form a volume adjusting module of the power amplifier. The adjusting module comprises a second adjusting unit, the second adjusting unit is connected with the DSP audio processor, a USB debugging interface is arranged on the power amplifier panel to form a debugging module, and debugging personnel can specifically set and adjust the frequency band of four-path frequency division output of the DSP audio processor and the power amplifier parameters of the four power amplifier units through the USB debugging interface.

It is right to combine a DSP power amplifier system of the figure below the utility model discloses it further explains to carry out, DSP power amplifier system include above-mentioned DSP power amplifier and left sound channel audio amplifier A and right sound channel audio amplifier B, left sound channel audio amplifier A and right sound channel audio amplifier B contain high pitch loudspeaker and woofer respectively, and do not establish the frequency divider in. In the system, a high pitch loudspeaker A of the left sound channel sound box is connected with a high pitch output interface A of a rear panel of the DSP power amplifier, and a low pitch loudspeaker is connected with a low pitch output interface A of the rear panel of the DSP power amplifier; correspondingly, a high pitch loudspeaker and a low pitch loudspeaker of the right sound channel sound box B are respectively connected with a high pitch output B interface and a low pitch output B interface of the rear panel of the DSP power amplifier. Referring to the attached drawing, in the audio playing of the DSP power amplifier system, audio signals a and B are respectively input to the DSP audio processor for frequency division to form audio signal a low frequency output, audio signal a high frequency output, audio signal B low frequency output, and audio signal B high frequency output, which are amplified by the a-way low frequency power amplifier, the a-way high frequency power amplifier, the B-way low frequency power amplifier, and the B-way high frequency power amplifier to drive the high and low frequency speakers of the left and right channels to sound. The audio amplifier of this embodiment does not have built-in frequency divider, does not have very high requirement to the speaker, just can play better effect, and the user can directly adjust the power amplifier size of each power amplifier unit through high pitch volume key and bass volume key on the DSP power amplifier panel in the use, realizes the volume adjustment, also can specifically set up through USB debugging interface the frequency division frequency channel of each output port of DSP audio processor and the power amplifier parameter of each power amplifier unit to satisfy the requirement of different audio amplifier specifications and environmental parameter to audio playback, reach best broadcast tone quality.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a DSP power amplifier, includes audio processor and amplifirer which characterized in that: the audio processor forms a plurality of channel output ports, the power amplifier comprises a plurality of power amplifier units, and the power amplifier units are respectively connected with the channel output ports and perform power amplifier processing on output audio signals.

2. The DSP power amplifier of claim 1, wherein: the audio processor is a DSP audio processor.

3. The DSP power amplifier of claim 2, wherein: the number of the channel output ports is four, the channel output ports are a path of low-frequency signal output, a path of high-frequency signal output, a path of low-frequency signal output and a path of high-frequency output, and the number of the power amplifier units is four correspondingly.

4. The DSP power amplifier of claim 3, characterized in that: the device also comprises an adjusting module used for adjusting the four frequency division frequency bands of the audio processor and the power amplification power of the power amplifier.

5. A DSP power amplifier is characterized in that: comprising the DSP power amplifier of claim 4.

6. The DSP power amplifier of claim 5, wherein: the adjusting module comprises a first adjusting unit, the first adjusting unit is used for adjusting the amplification power of the four power amplifier units, and a high-low volume adjusting button is arranged on the power amplifier panel to form a volume adjusting module of the power amplifier.

7. The DSP power amplifier of claim 5, wherein: the adjusting module comprises a second adjusting unit, the second adjusting unit is connected with the DSP audio processor, and a USB debugging interface is arranged on the power amplifier panel to form a debugging module.

8. The utility model provides a DSP power amplifier sound system which characterized in that: the DSP power amplifier of claim 5 and a sound box, wherein the sound box is not provided with a frequency divider and is driven by the power amplifier unit.

9. The DSP power amplifier sound system of claim 8, characterized in that: the sound box comprises a high pitch loudspeaker and a low pitch loudspeaker.

10. The DSP power amplifier sound system of claim 8, characterized in that: the number of the sound boxes is two.