Method of recognizing pre-recorded announcements

Details Method of recognizing pre-recorded announcements Method of recognizing pre-recorded announcements

1997-01-30

1998-10-20

Tsang, Fan S.

Telephonic communications

Audio message storage, retrieval, or synthesis

379 8802, 379 8809, 379 8823, H04M 164

Patent

active

058258558

ABSTRACT:
A method of recognizing correspondence between a pre-recorded sample announcement and the identical pre-recorded reference announcement is shown. The reference pre-recorded sample announcement is characterized in terms of: (1) Start of speech (SP) where the transition from silence to voicing occurs, (2) average frame power (AFP) for each power frame length of a voicing segment of speech (3) silence gap length (SGL), the duration of non-voicing between two consecutive voicing segments and (4) end of speech (EOS). The sample pre-recorded announcement is also characterized in terms of SP, AFP, SGL, and EOS. The SP, AFPs, SGLs, and EOS of the reference pre-recorded announcement is compared with that of the sample pre-recorded announcement to determine if a match exists.

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