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The paper proposes an efficient transient audio coding algorithm based on Discrete Cosine Transform (DCT) and sine extraction with Matching Pursuit (MP), which can be used conveniently in the sinusoidal parametric audio coder. The overlapped input frame is firstly classified into transient and non-transient signal. The transient detection is designed based on the energy ratio of the overlapped subframe...
This paper proposed a post-filter in frequency domain for enhancing the perceptual quality of the coded transient audio. The post-filter is used to filter the frequency coefficients of the coded transient and consists of a short-term post-filter which is derived from the Linear Predictive Coding (LPC) predictor based on the Discrete Cosine Transform (DCT) coefficients of the transient frame. In order...
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