发明名称 DISCRETE AUDIO FREQUENCY TONE DETECTION
摘要 DISCRETE AUDIO FREQUENCY TONE DETECTION The process of the present invention detects SAT in a received signal. The frequency and amplitude characteristics of the received signal are used to determine if SAT is present. If the autocorrelation values generate poles in the proper locations, SAT is present.
申请公布号 CA2118552(A1) 申请公布日期 1994.09.24
申请号 CA19942118552 申请日期 1994.03.08
申请人 MOTOROLA, INC. 发明人 RONEY, EDWARD M., IV
分类号 H04M3/22;(IPC1-7):H04M3/22 主分类号 H04M3/22
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