一种面向无线传输的音频编解码算法的实现和优化  

Implementation and Optimization of an Audio Compression Algorithm for Wireless Application

作　　者：杨洋[1] 郭斌林[1] 黄凯[2] 

机构地区：[1]杭州电子科技大学微电子CAD所,浙江杭州310037 [2]浙江大学超大规模集成电路设计研究所,浙江杭州310012

出　　处：《计算机系统应用》2010年第6期70-73,89,共5页Computer Systems & Applications

摘　　要：以面向无线应用的高性能音频编解码算法设计为目标,基于蓝牙SBC算法编解码框架,采用近似重构的原型滤波器和动态比特分配技术来改善音质和性能。该算法在自主32位CK510MCU平台上实现并优化,并应用于实际无线音频方案设计中。实验结果表明,在码流和功耗损失较小的情况下,采用该算法的无线音频方案音质比原始SBC得到了显著提高。This paper presents a new high-performance audio compression algorithm for wireless application. Based on blue-tooth SBC algorithm architecture, the proposed algorithm adopts nearly perfect reconstruct,able proto filter and dynamic bit allocation technology to improve audio quality and performance. This algorithm was implemented on 32-bit CKA5102 MCU, and successfully applied to current wireless audio solution. Experiments show that compared with blue-tooth SBC, the proposed algorithm gains much improvement on audio quality, while having less cost in bitstream and power.

关 键 词：无线传输 音频编解码 SBC 自适应量化 优化 

分 类 号：TN919.81[电子电信—通信与信息系统]