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Method and device for volume adjustment

A volume adjustment and sound signal technology, applied in the field of signal processing, can solve the problems of high volume of sound source, inconsistent sound source production and synthesis, affecting user's sound effect, etc.

Active Publication Date: 2016-08-24
LE SHI ZHI ZIN ELECTRONIC TECHNOLOGY (TIANJIN) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to various reasons, the production and synthesis of sound sources are not consistent. Some sound sources have a relatively high volume, while others have a relatively low volume. Therefore, when switching between different sound sources, the volume set by the playback terminal itself may make the playback The output of the sound can vary greatly, thus affecting the sound effect received by the user
[0003] At present, the volume adjustment methods in the prior art are mainly through artificially setting playback volume parameters or adjusting the volume through manual operation. When the input conditions change, the user can only reset the parameters or manually adjust again. To adapt to changes in conditions, the operation is cumbersome and time-consuming

Method used

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  • Method and device for volume adjustment

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] An embodiment of the present invention provides a volume adjustment method, such as figure 1 shown, including:

[0043] S101. The volume adjusting device acquires pulse code modulation (PCM) data of a sound signal of an input source.

[0044] Specifically, when the user is watching a video or listening to audio, the user may need to perform some operations to adjust the volume. In a volume adjustment method provided in an embodiment of the present invention, the user can directly use the intelligent volume adjustment device to automatically adjust the volume. adjust. Firstly, the intelligent volume adjustment device is turned on, and the volume adjustment device accepts and receives the intelligent volume adjustment command, and then obtains the pulse code modulation PCM data of the sound signal of the input source. For example, the input source for obtaining the sound signal may be a TV input source HDMI (High Definition Multimedia Interface, high-definition multimed...

Embodiment 2

[0055] An embodiment of the present invention provides a volume adjustment method, such as figure 2 shown, including:

[0056] S201. The volume adjustment device receives an intelligent volume adjustment instruction.

[0057] Specifically, when the user is watching a video or listening to audio, the user may need to perform some operations to adjust the volume. In a volume adjustment method provided in an embodiment of the present invention, the user can directly use the intelligent volume adjustment device to automatically adjust the volume. adjust. Firstly, the intelligent volume adjustment device is turned on, and the volume adjustment device accepts and receives the intelligent volume adjustment command, and then obtains the pulse code modulation PCM data of the sound signal of the input source. For example, the input source for obtaining the sound signal may be a TV input source HDMI (High Definition Multimedia Interface, high-definition multimedia interface), a TV sig...

Embodiment 3

[0069] The embodiment of the present invention provides a volume adjustment device 1, such as image 3 shown, including:

[0070] Acquisition unit 10, for obtaining the pulse code modulation PCM data of the sound signal of input source;

[0071] The processing unit 11 is configured to calculate the gain of the sound signal of the input source according to the PCM data, and obtain a step gain value by using a preset algorithm according to the gain of the sound signal of the input source;

[0072] The adjustment unit 12 is configured to adjust the gain of the sound signal of the subsequent input source according to the step gain value.

[0073] The processing unit 11 is specifically used to sample the sound signal of the input source, obtain the sound signal value of a certain PCM sampling point, and divide the sound signal value of a certain PCM sampling point by the value of the number of sampling points to calculate the square, and The squared value is logarithmized to base...

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Abstract

The embodiment of the invention provides a volume regulating method and a volume regulating device and relates to the technical field of signal processing. The volume regulating method and the volume regulating device can automatically regulate the volume by acquiring a gain of a sound signal of an input source so as to enable a user to hear sound in a reasonable interval range. The method comprises the following steps: acquiring PCM (Pulse Code Modulation) data of the sound signal of the input source; according to the PCM data, calculating the gain of the sound signal of the input source; according to the gain of the sound signal of the input source, obtaining a stepping gain value by adopting a preset algorithm; according to the stepping gain value, regulating a gain of a sound signal of a subsequent input source.

Description

technical field [0001] The present invention relates to the technical field of signal processing, in particular to a volume adjustment method and device. Background technique [0002] With the development of film and television technology, TV programs and various videos are becoming more and more abundant. Users not only have higher and higher requirements for video images, but also put forward higher requirements for video or audio sound effects. However, due to various reasons, the production and synthesis of sound sources are not consistent. Some sound sources have a relatively high volume, while others have a relatively low volume. Therefore, when switching between different sound sources, the volume set by the playback terminal itself may make the playback The sound produced may be loud or small, thus affecting the sound effect received by the user. [0003] At present, the volume adjustment methods in the prior art are mainly through artificially setting playback volu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03G3/20
Inventor 任海林
Owner LE SHI ZHI ZIN ELECTRONIC TECHNOLOGY (TIANJIN) LTD