摘要
将信号的幅值，频率及计数率看作一个三维空间，需要检测的信号存在于该空间的某一小区域内。据此理论设计而成的自动录音电话信号检测装置，其工作变得很可靠。
Presents a new concept of a space consiting of signals amplidude, frequence and the sta-tistical law and the detected signal in a smale domain of this space. Accocrding to this theo-ry, develops an auto-record telephone unit for detecting signal with high reliability.
关键词
多维信息空间
自动录音电话
信息检测装置
Multidimesional space
Puls am plitude analyser
Digital filter
Record telephone
