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本文主要介绍一种用051微处理器进行变速的全数字化信道声码器。并讨论了用数字滤波器来组成梳状频谱分析器和综合器以及设计这种滤波器时要注意的几个问题;最后对几种数码压缩的方法以及基音析出的体制谈些体会。
This article describes a 051 microprocessor for variable speed digital channel vocoder. And discusses several issues that should be noticed when using digital filters to form comb spectrum analyzers and synthesizers and to design such filters. Finally, we discuss some methods of digital compression and the system of pitch analysis.