Amplified, and disseminated. Influence of A-Law Companding Characteristic on Small Signals Added to Big Signals A律压扩特性对大信号上叠加小信号的影响放大信号具有90相位差的放大器
By careful analysis of the characters of A-law PCM code, fewer logic cells are used for the whole circuit, and the density of integration is improved greatly. 通过仔细分析A律PCM码的特点,使得整个电路占用了很少的逻辑单元,提高了集成度。
This paper discusses a code converter which converts A-Law PCM to Adaptive Syllable Companding DM ( ADM) and from ADM to A-Law PCM. In order to perform the conversion, we adopt a kind of special filter-multirate filter. 本文讨论了一种码变换器,它实现了A律PCM与音节压扩DM(ADM)间的码型变换,该变换采用了一种特殊滤波器(多速率数字滤波器)。
Code Convertion between A-Law PCM and Adaptive Syllable Companding DM A律PCM与音节压扩DM编码的变换
A circuit is designed on high-density-programmable-devices, which is used for compression coding of speech signals, namely the conversion from Pulse-Code-Modulation code to A-law PCM code. 在高密度可编程逻辑器件上设计电路,实现语音信号的压缩编码,即线性脉冲编码调制(PCM)码转换成A律PCM码。