A digital realization of audio dynamic range control

L. Lu
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引用次数: 7

Abstract

A digital limiter/compressor/expander/noise gate with variable parameters for audio signals is presented. This is a feedforward side-chain system which uses a minimum gain method for selecting the section and generating the control gain and a first-order IIR filter for the attack and release processings. The static and dynamic characteristics are analysed, the function block diagram and the realization techniques are described. The device has been real-time implemented using Motorola DSP56002.
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音频动态范围控制的数字实现
提出了一种可变参数音频信号数字限幅器/压缩器/膨胀器/噪声门。这是一个前馈侧链系统,它使用最小增益方法来选择截面并产生控制增益,一阶IIR滤波器用于攻击和释放处理。分析了系统的静态和动态特性,描述了系统的功能框图和实现技术。该器件采用摩托罗拉DSP56002实时实现。
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