scaling of signal 信号的时间展缩
A multi-speed jittered signal generator (216,400) that generates a full-speed jittered signal (404) by scaling a low-speed jittered signal (420) using a frequency scaler (428).
通过使用频率缩放器（428）缩放低速抖动信号（420）产生全速抖动 信号（404）的多速抖动信号发生器（216，400）。
When seismic data signal to noise ratio is low and conventional processing effect is not good, scaling down processing may be introduced in data processing.
在地震资料信噪比较低，常规处理效果不理想的情况下可考虑采用分频处理。
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