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a compression limiter

A compression limiting and amplitude limiting technology, applied in the direction of limiting amplitude, electrical components, amplification control, etc., can solve the problems of poor listening sense of equipment and easily damaged speakers, and achieve the effect of improving output sound quality and user experience.

Inactive Publication Date: 2019-03-19
WILL SEMICON (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When clipping and truncation occurs in the system, a large number of harmonic distortion signals will be generated, resulting in poor hearing of the equipment and easy damage to the speaker

Method used

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Embodiment Construction

[0067] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation manners of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention, and those skilled in the art can obtain other accompanying drawings based on these drawings and obtain other implementations.

[0068] Such as Figure 4 Shown is a schematic structural diagram of the first embodiment of the compression limiter 100 provided by the present invention. It can be seen from the figure that the compression limiter 100 includes: a gain adjustment module 110, a sound amplification module 120 and a clipping control module 130 , wherein the sound amplification module 120 is connected to the gain adjustment module 110 , and the clipping control module 130 is connected to the sound amp...

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Abstract

The invention provides a compressor limiter. The compressor limiter comprises a gain adjustment module, a loudspeaker module, a clipping control module and a clipping amplitude generator. The gain adjustment module is used for outputting a first output signal, and feeding back and adjusting, according to the first output signal, a first signal gain for realizing compression and amplitude limiting of an input signal. The loudspeaker module is used for performing power amplification on the first output signal and outputting a second output signal. The clipping control module is used for feeding back and adjusting, according to clipping distortion occurring in the second output signal, a second signal gain for realizing power amplification of the first output signal. The clipping amplitude generator is used for automatically adjusting the limiting amplitude according to the clipping amplitude. Under the joint action of the first signal gain and the second signal gain, the compressor limiter controls the second output signal output by the compressor limiter within the limiting amplitude for further output, so that the clipping distortion occurring in the second output signal is eliminated automatically, the output tone quality of the loudspeaker module is improved, the user experience is improved, and the clipping amplitude and limiting amplitude are controlled in a relatively fixed proportion.

Description

technical field [0001] The invention relates to the technical field of audio processing, in particular to a compression limiter. Background technique [0002] The dynamic range of human hearing can reach 120dB (decibels), and the loudest sound that can be heard is 1 million times louder than the smallest sound. When the PA equipment is playing audio signals, it is often limited by the noise floor of the PA equipment itself and the maximum output capability of the PA equipment (the dynamic range of the equipment). For example, smaller sounds will be submerged in the noise floor of the system. It cannot be heard in the medium, and the loudest sound will be limited by the maximum output capability of the amplifier equipment, and even clipping distortion will occur. In order to solve this problem, the dynamic processing of the sound signal is introduced, which reduces the dynamic range of the sound so that the sound reinforcement equipment can play normally, and the compression...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03G11/00
Inventor 张振浩徐剑尹辉
Owner WILL SEMICON (SHANGHAI) CO LTD
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