用DSP实现多通道G.723.1附件a

2002 Digest of Technical Papers. International Conference on Consumer Electronics (IEEE Cat. No.02CH37300) Pub Date : 2002-06-18 DOI:10.1109/ICCE.2002.1014047

Yong-Soo Choi, Chang-Kyu Ahn, Tae-Ik Kang

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引用次数: 2

摘要

本文描述了一个多通道G.723.1附件a (G.723.1A)的实现，重点是使用通用数字信号处理器(DSP) TMS320C62x (C62x)进行代码优化。为了实现多通道G.723.1A，分析了ITU-T c码的复杂度。然后对C函数进行复杂度排序和优化。在优化的同时，我们使用ITU-T测试向量验证了优化代码的位准确性。仅使用内部存储器，优化的代码可以执行全双工16通道处理。此外，我们使用快速算法(称为位兼容优化)进一步增加了每个DSP的可用通道数量。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Implementation of a multi-channel G.723.1 Annex A using a DSP

This paper describes a multi-channel G.723.1 Annex A (G.723.1A) implementation focused on code optimization using a general purpose digital signal processor (DSP), TMS320C62x (C62x). To implement a multi-channel G.723.1A, complexity of the ITU-T C-code was analyzed. Then we sorted and optimized C functions in complexity order. In parallel with optimization, we verified the bit-exactness of the optimized code using the ITU-T test vectors. Using only internal memory, the optimized code can perform full-duplex 16 channel processing. In addition, we further increased the number of available channels per DSP using fast algorithms, referred to as bit-compatible optimization.

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2002 Digest of Technical Papers. International Conference on Consumer Electronics (IEEE Cat. No.02CH37300)

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