The theory and method of how linear pulse coding modulation ( LPCM ) is used in data compression of analogue seismic signal are detailed in this paper. 本文阐述了线性预测差分编码法(LPCM)应用于模拟地震信号数据压缩的理论和方法;
Compressing data by linear pulse coding modulation 用线性预测差分编码进行数据压缩的理论与效果
The mathematic model of the designed circuits can facilitate the choice of pulse coding and modulation mode for the non-crosstalk ultrasonic ranging system, so the cumbersome hardware verification can be avoided, which meets the need of theoretic study and simulation work. 此模型的建立可便于无串扰超声测距系统对脉冲编码和调制方式的选择,省去了繁琐的硬件验证,可满足理论研究和仿真的需要。
And at same time, I choose the inner pulse coding method on data transmission for the signal of the time setter, use frequency modulation and unrelatable demodulation, and apply error checking to the error control. 确定了时间装定信号的内脉冲编码数据传输方法;选择了信号频率调制及非相干解调方法和检错重收的差错控制方法。
Adaptive Differential Pulse Code Modulation ( ADPCM ) is an effective algorithm of speech coding. It adopts the method of adaptive quantization and adaptive prediction to compress pulse code modulation ( PCM ) signal. 自适应差分脉冲编码调制(PCM)(ADPCM)采用自适应量化方法和自适应预测方法,对PCM(脉冲编码调制(PCM))语音信号进行再压缩,是一种有效的语音信号波形编码压缩方案。