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METHOD AND APPARATUS FOR CODING AUDIO SIGNALS BASED ON PERCEPTUAL MODEL

机译：基于感知模型的音频信号编码方法及装置

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摘要

Coding of high quality stereophonic audio signals is accomplished in aperceptual filterbank coder which exploits the interchannel redundancies andpsychoacoustic. Using perceptual principles, switching between a normal and shortwindow of input samples improve output signal quality for certain input signals,particularly those having a rapid attack. Switching is also accomplished betweencoding of left and right channels and so- called sum and difference channels inresponse to particular signal conditions. A number of new perceptually basedtechniques, including improved threshold determinations, result in high quality.

机译：高质量立体声音频信号的编码是通过感知滤波器组编码器，利用信道间冗余和心理声学的。使用感知原理，在正常和短暂之间切换输入样本窗口可改善某些输入信号（尤其是具有快速起音的信号）的输出信号质量。还可以在左右声道以及所谓的“和”和“差”声道的编码之间进行切换。对特定信号条件的响应。一些新的基于感知的包括改进的阈值确定在内的各种技术都可以带来高质量。

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公开/公告号CA2090159C

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公开/公告日1999-05-18

原文格式PDF
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申请/专利号CA19932090159
发明设计人 JOHNSTON JAMES DAVIS;
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申请日1993-02-23
分类号H04S1/00;H03M7/00;
国家 CA
入库时间 2022-08-22 02:24:15

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