N a sound recording process in which an audio input is converted into an analogous electrical waveform 模拟录音
Objective: Solving physiologic information acquisition and replacing logging mode of magnetic tape analogue recording.
目的：解决生理信息测量时数据采集及取代磁带模拟的记录方式。
This paper proposes a digital recording method for analogue audio signals, and applies it to a telephone recording system.
提出了一种对模拟语音信号进行数字化录音的方法，并将其应用于电话录音系统中。
The second paper elaborates the application of tape recording to earthquake observations, mainly describing the analogue and digital tape recording and the corresponding time service systems.
综述了磁带记录在地震观测上的应用，主要介绍了模拟和数字磁带记录和相应的时间服务系统的情况。
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