Invention Grant
US08223928B2 Method of and a device for quantifying a tone signal received in a telecommunications network 失效
用于量化在电信网络中接收的音调信号的方法和装置

Method of and a device for quantifying a tone signal received in a telecommunications network
Abstract:
A tone signal received in a telecommunications network is bandpass filtered based on an identified type of the received tone signal, providing a bandpass filtered tone signal. The tone signal is also bandstop filtered based on the identified type of the received tone signal, providing a bandstop filtered tone signal. The bandpass filtered tone signal and the bandstop filtered tone signal are analysed and the received tone signal is quantified based on the analysis result.
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