摘要
现有的大部分语音编码系统硬件框架复杂,软件设计难度较大。为实现低成本方案,设计了一种以SPCE061A语音单片机为基础的编码系统,压缩技术采用了基于正交滤波器的子带编码算法。系统硬件结构简洁、软件设计方便高效,具有较高的性价比。通过实验,对比了原始语音信号和重建信号的时域波形和回放质量,表明本系统具有一定的实用价值。
Most of current speech coding systems are composed with complex hardware,and difficult to develop software design. To realize a scheme at low cost, a speech code system based on speech MCU SPCE061A is designed, with sub-band coding algorithm on quadrature mirror filter adopted as the compression technology. The system is charactered with compact hardware configuration, efficient software design and high performance price ratio. At last, the replay quality and time-domain waveform are compared through experiments,between the original speech signal and the reconstructed signal, and the system is indicated practical.
出处
《电子器件》
CAS
2008年第3期959-962,共4页
Chinese Journal of Electron Devices
基金
浙江省教育厅项目(20061478)
