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Processing method, controller and audio processing chip

A processing method, controller technology, applied in the direction of instruments, speech analysis, etc.

Pending Publication Date: 2022-02-25
SHANGHAI AWINIC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, conventional smooth transition functions can only be applied to transfer curves with a specific slope

Method used

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  • Processing method, controller and audio processing chip
  • Processing method, controller and audio processing chip
  • Processing method, controller and audio processing chip

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Embodiment Construction

[0055] The following will clearly and completely describe the embodiments of the present application in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0056] In the existing DRC scheme, the smooth transition function used is:

[0057]

[0058] Among them, in (1), lg is the amplitude of the input signal, knee is the range of the smooth transition function, w2=knee / 2, th is the size of the corner node, and y is the amplitude of the output signal.

[0059] If you set knee to 10dB and th to -20dB, the transmission curve is as figure 2 as shown, figure 2 is a DRC transfer curve based on a conventional smooth transitio...

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Abstract

The invention discloses a processing method, a controller and an audio processing chip. The method comprises the steps: calculating the coordinate of a first common point and the coordinate of a second common point based on the obtained slope of a first audio transmission curve, the slope of a second audio transmission curve, the interval range of a to-be-generated transition curve and the coordinate of a turning point; and calculating a slope expression of points on a transition curve based on the coordinate of the first common point, the coordinate of the second common point and the coordinate of the turning point, generating the transition curve based on the continuity of the slope of each point on the transition function and the slope expression, and outputting a target transmission curve. According to the technical scheme, the transition curve connecting the two transmission curves in a smooth transition mode can be obtained based on any turning point, any slope and any interval range, and the transition curve is not limited to a transmission curve with a specific slope.

Description

technical field [0001] The present invention relates to the technical field of sound processing, and more specifically, relates to a processing method, a controller and an audio processing chip. Background technique [0002] In digital signal processing, Dynamic Range Control (DRC) is a method for dynamically adjusting gain according to the input signal amplitude. In the DRC method, it will be divided into multiple nodes in different layers to process the input signal. The area between two nodes is a layer. The corresponding relationship between the two adjacent layers and the adjusted gain of the input signal will be different, resulting in a sudden change in the DRC control curve between the two adjacent layers, such as figure 1 shown. [0003] figure 1 is a conversion curve diagram of an input signal and an output signal in a conventional DRC control method, figure 1 Among them, A1 is the amplitude of the input signal in the DRC, which increases from -100dB limit to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L19/16
CPCG10L19/16
Inventor 朱马姚炜
Owner SHANGHAI AWINIC TECH CO LTD