Dynamic Range Compression Characteristics Using an Interpolating Polynomial for Digital Audio Systems(Digital Signal Processing)
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概要
- 論文の詳細を見る
An audio signal level compressor is presented, which is based on the approximation algorithm using an interpolating polynomial. To implement a compression characteristic in a digital audio system, a power calculation with fractional numbers is required and it is difficult to be performed directly in digital circuits. We introduce a polynomial expression to approximate the power operation, then the gain calculation is easily performed with a number of additions, multiplications and a division. Newton's interpolation formula is used to calculate the compression characteristics in a very short time and the obtained compression characteristics are very close to the ideal ones.
- 社団法人電子情報通信学会の論文
- 2005-02-01
著者
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Wei Shugang
Faculty Of Engineering Gunma University
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Shimizu Kensuke
Faculty Of Engineering Gunma University
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