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Differential numeric coding with automatic code switching - is compatible with both adaptive and classic coding, with absolute value of signal coded as second word
Differential numeric coding with automatic code switching - is compatible with both adaptive and classic coding, with absolute value of signal coded as second word
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机译：具有自动代码切换功能的差分数字编码-与自适应和经典编码兼容，信号的绝对值编码为第二个字
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摘要
Differential numeric coding with automatic code switching is especially for pulse code modulated signal streams. The system is compatible with both adaptive differential and classic PCM coding. A predicted error signal, with or without amplitude compression, is quantified and provides a transmit code word. The quantification process consists of real and level quantification following compression of levels controlled by a signal which is a function of a mean level. The absolute value of the error signal is coded as a second word in the signal and is transmitted when the first code word has a value indicating that the algebraic predicted error is a maximum or minimum. A predictor circuit, to the Nth order, transmits the coded signal during N sampling periods.
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