音频级压缩算法研究

Sun Yuhang, L. Shanshan
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引用次数: 0

摘要

音频压缩器是音频处理系统的重要组成部分。本文所设计的压缩算法将应用于数字音频广播发射机中的音频压缩器。本文提出了一种采用均方值法动态控制增益的有效算法,并对两种声道处理方案下的两种音频信号进行了比较,以获得较好的压缩效果。然后在MATLAB仿真中通过对信号幅度的压缩效果进行评价,从两种方案中选择一种先对信号进行处理以增强双声道立体声效果再进行压缩的方案更适合双声道音频压缩。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Research on algorithm of audio level compressor
A audio compressor is an important part of a audio processing system. The compression algorithm designed in this paper will be applied to audio compressor in the digital audio broadcasting transmitter. In this paper, an effective algorithm for dynamic control of the gain by taking mean square value is proposed, and two different audio signal from two channel processing schemes will be compared to get better one on the impact of compression. Then the algorithm is evaluated by the effect of compression of signal amplitude in the MATLAB simulation, and a scheme selected that signal is firstly dealt with to enhance the effect of the dual channel stereo and then is compressed is more suitable for the two channel audio compression from two schemes.
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