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A kind of audio output method and device

An audio output and audio technology, applied in sensor parts, sensors, electrical components, etc., can solve problems such as noise floor and low audio quality

Active Publication Date: 2022-07-29
KTMICRO ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practice, it is found that the commonly used digital-to-analog converters usually have a noise floor, which leads to low audio quality of the audio output from the audio output device

Method used

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  • A kind of audio output method and device
  • A kind of audio output method and device
  • A kind of audio output method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] see figure 1 , figure 1 A schematic flowchart of an audio output method is provided in an embodiment of the present application. The method can be used in the conversion process of digital-to-analog signals. Specifically, the method can reduce the noise floor of digital-to-analog conversion during the conversion process of digital-to-analog signals. Wherein, the audio output method includes:

[0055] S101. Receive an audio signal to be output.

[0056] In this embodiment, the audio signal to be output is an audio signal that has been stored and ready to be output in the audio system.

[0057] S102. Perform DC bias processing on the audio signal to be output to obtain an audio bias signal.

[0058] In this embodiment, the method may preferentially process the output signal according to the preset signal processing algorithm, and then perform the DC bias processing.

[0059] In this embodiment, the maximum value of the DC offset processing may be 15000, which corresp...

Embodiment 2

[0068] see figure 2 , figure 2 This is a schematic flowchart of an audio output method provided by an embodiment of the present application. like figure 2 shown, wherein the audio output method includes:

[0069] S201. Receive an audio signal to be output.

[0070] S202. Acquire a processing mode pointer, a preset data volume parameter, and left and right channel pointers.

[0071] In this embodiment, the processing mode pointer may be set to u8DitherRampMode.

[0072] In this embodiment, the FIFO pointer of the left channel of audio output may be set to s32Addr0, and the FIFO pointer of the right channel of audio output may be set to s32Addr1.

[0073] In this embodiment, the method will perform data superimposition bias in the two FIFOs.

[0074] S203. Determine the target offset value according to the processing mode pointer.

[0075] In this embodiment, the target offset value of the processing mode pointer may specifically include 0, 1, and 2.

[0076] In this ...

Embodiment 3

[0104] see image 3 , image 3 This is a schematic structural diagram of an audio output device provided in an embodiment of the present application. like image 3 As shown, the audio output device includes:

[0105] a receiving unit 310, configured to receive the audio signal to be output;

[0106] The DC bias unit 320 is configured to perform DC bias processing on the audio signal to be output to obtain an audio bias signal;

[0107] a conversion unit 330, configured to perform digital-to-analog conversion on the audio bias signal to obtain an audio analog signal;

[0108] The output unit 340 is used for outputting audio analog signals.

[0109] In this embodiment of the present application, for the explanation of the audio output device, reference may be made to the description in Embodiment 1 or Embodiment 2, which will not be repeated in this embodiment.

[0110] It can be seen that by implementing the audio output device described in this embodiment, algorithm proc...

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Abstract

Embodiments of the present application provide an audio output method and device, which relate to the technical field of audio processing. The audio output method includes: receiving an audio signal to be output; performing DC bias processing on the audio signal to be output to obtain an audio bias signal; Set the signal for digital-to-analog conversion to obtain an audio analog signal; output the audio analog signal. It can be seen that, by implementing this embodiment, the audio quality of the audio output by the audio output device can be improved.

Description

technical field [0001] The present application relates to the technical field of audio processing, and in particular, to an audio output method and device. Background technique [0002] At present, with the rapid development of audio equipment, analog-to-digital converters and digital-to-analog converters used in audio equipment are also rapidly updated. However, it has been found in practice that the digital-to-analog converters commonly used today often have a noise floor, resulting in lower audio quality of the audio output from the audio output device. SUMMARY OF THE INVENTION [0003] The purpose of the embodiments of the present application is to provide an audio output method and apparatus, which can improve the audio quality of the audio output by the audio output device. [0004] A first aspect of the embodiments of the present application provides an audio output method, including: [0005] Receive the audio signal to be output; [0006] Performing DC bias pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R3/00
CPCH04R3/00
Inventor 陈博文李锡广
Owner KTMICRO ELECTRONICS