Title :
A speech/voiceband data discriminator
Author_Institution :
AT&T Bell Labs., Holmdel, NJ, USA
fDate :
4/1/1993 12:00:00 AM
Abstract :
The problem of distinguishing speech from voiceband data is treated. A discrimination function based on the sign of the autocorrelation at lag two of the incoming signal and the second-order moment of the complex low-pass signal is presented. The algorithm has been applied to many types of voiceband data signals and, within a window of 32 ms, correctly classifies them. For the limited number of speech signals available, the amount of misclassification of speech as voiceband data was observed to be about 1%
Keywords :
speech analysis and processing; algorithm; autocorrelation; complex low-pass signal; discrimination function; second-order moment; speech signals; speech/voiceband data discriminator; voiceband data signals; window; Autocorrelation; Degradation; Demodulation; Interpolation; Modems; Phase change materials; Phase shift keying; Societies; Speech processing; Telephony;
Journal_Title :
Communications, IEEE Transactions on
