计算效率高的语音正弦变换编码ABS方案

Proceedings of the 3rd IEEE International Symposium on Signal Processing and Information Technology (IEEE Cat. No.03EX795) Pub Date : 2003-12-14 DOI:10.1109/ISSPIT.2003.1341226

N. Agarwal

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引用次数: 0

摘要

合成分析(AbS)已用于一系列中低比特率语音编码器中，以找到最佳重建给定波形的参数。尽管AbS的计算复杂度很高，但它仍然被使用，因为它能给出准确的结果。提出了一种正弦变换编码器(STC)的低复杂度综合分析方案。结果的准确性没有受到损害，同时将计算复杂度从2.63 MFLOPS(最佳情况)和22.13 MFLOPS(最坏情况)降低到0.46 MFLOPS的恒定值。

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Computationally efficient ABS scheme for sinusoidal transform coding of speech

Analysis-by-synthesis (AbS) has been used in a range of medium and low bitrate speech coders to find the parameters that would best reconstruct a given waveform. AbS has been used despite its high computational complexity because it gives accurate results. In this paper, a low complexity analysis by synthesis scheme for a sinusoidal transform coder (STC) has been proposed. The accuracy of results has not been compromised, while reducing the computational complexity from 2.63 MFLOPS (best case) and 22.13 MFLOPS (worst case) to a constant value of 0.46 MFLOPS.

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Proceedings of the 3rd IEEE International Symposium on Signal Processing and Information Technology (IEEE Cat. No.03EX795)

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