Volume control apparatus and method

A volume control and controller technology, applied in the direction of amplification control, combination of control types, digital/coded signal combination control, etc., can solve the problems of sound quality and dynamic response ability decline.

Inactive Publication Date: 2009-12-09
MSTAR SOFTWARE R&D (SHENZHEN) LTD +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, too much suppression of volume changes will also cause a decline in sound quality and dynamic response

Method used

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  • Volume control apparatus and method
  • Volume control apparatus and method

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Embodiment Construction

[0060] See figure 1 , which is a functional block diagram of an intelligent volume control device 1 developed in this case to improve the lack of conventional technical means, wherein an automatic gain controller (Automatic GainControl, referred to as AGC) 10 receives an original sound signal, and according to a gain value. Scaling the energy (or waveform amplitude) of the original sound signal, and then outputting an automatic gain sound signal, and the gain value added to the original sound signal corresponds to the energy (or waveform amplitude) of the original sound signal Time changes, and then used to modify the volume of the automatic gain sound signal, and then can gradually converge to a target volume that can be preset by the listener in advance, so as to eliminate the channel switching or conversion to commercial clips Discomfort caused by drastic changes in volume. In this embodiment, the output end of the automatic gain controller 10 is provided with an equal lou...

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Abstract

A volume control apparatus and method is provided. The volume control apparatus includes an automatic gain controller and an equal loudness controller. The method includes steps of receiving an original sound signal by the automatic gain controller, adjusting the original sound signal by the automatic gain controller according to a target volume to output an auto-gain sound signal that gradually converges to the target volume, and rendering a loudness curve according to the target volume for compensating the auto-gain sound signal to output a compensated sound signal.

Description

technical field [0001] The invention relates to a volume control device and method, in particular to a volume control device and method applied to a TV chip. Background technique [0002] When a user watches a TV program, when the program channel is switched, the signal source is switched (such as switching from analog TV to digital TV), or the program content itself is switched to an advertisement, etc. Discomfort caused by changes in the volume, for example, the volume usually increases after the program enters the advertisement, so it is often seen that the user needs to constantly use the remote control to adjust the volume. [0003] In order to improve the above problems, manufacturers have developed many intelligent volume control mechanisms to automatically monitor the volume of the TV, so as to eliminate the discomfort caused by volume changes and save manual troubles. However, too much suppression of volume changes will also result in a decline in sound quality and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03G9/00H03G7/00
CPCH03G9/14H03G9/005
Inventor 张荣贵林煌翔陈绍喜
Owner MSTAR SOFTWARE R&D (SHENZHEN) LTD
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