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.
出处
《计算机系统应用》
2010年第6期70-73,89,共5页
Computer Systems & Applications
关键词
无线传输
音频编解码
SBC
自适应量化
优化
wireless communication
audio compression
SBC
adaptive quanitization
optimization
