G.729在PNX1500 DSP平台上的优化设计
Information Security and Communications Privacy(2007)
Abstract
文章简单介绍了PNX1500 DSP[1]的体系架构,阐述了基于此架构的语音压缩算法G.729[2]的优化方法。在分析了影响G.729音频编码效率的关键因素基础上,选择了有针对性的优化策略对G.729音频编解码器的Cache部分进行指令优化和算法优化,有效地克服了影响编码速度的瓶颈,改善了编码器效率。
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Key words
VLIW,PNX1500,CS-ACELP,Audio Codec G.729
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