脉码调制技术 meaning in Chinese

pcm pulse code modulation

In pulse code modulation , the representation of the quantized samples of an analogue signal by character signals according to a defined code
在脉码调制技术中，按照确定的代码由字符信号对模拟信号量化采样的表示法。
The data acquisition and data flow for various sensor carriers are analyzed systematically , and the calculation models are put forward . the model of quantification of wall - loss defects for in - line inspection with ultrasonic pigs has been established . and inspection data can be pretreated with this model , compressed with dpcm technique and treatd by dsp instruments
建立了检测头数据采集量及数据处理速率模型，首次建立了管道壁缺陷液浸超声检测的量化分析模型；提出采用该模型进行数据预处理后，采用差分脉码调制技术进行数据压缩，采用dsp器件提高数据处理速率。