Intonation: Theory, Models, and Applications

Athens, Greece
September 18-20, 1997


Working Technology for Melody Investigation and Check-Up of Pitch Detection Correctness

Serguei Koval, Michael Khitrov, Andrey Raev

Speech Technology Center, Saint-Petersburg, Russia

For some tasks (e.g. medical, forensic, educational applications) it is important to know the very real pitch. So there is a problem to check-up the correctness of any concrete pitch contour for long speech records for any pitch detection method. Besides it would be useful to see the degree of signal periodicity without strong decision voice/noise. The new homomorphic method of signal periodicity degree detection with analysis frame length in proportion to the time-lag is described. The powerful working approach to visual analysis of speech signal periodicity is proposed. This Voicegrams method of speech periodicity representation ensures the practical correctness of pitch estimation and allows to find periodicity degree for poor quality signal.

Full Paper

Bibliographic reference.  Koval, Serguei / Khitrov, Michael / Raev, Andrey (1997): "Working technology for melody investigation and check-up of pitch detection correctness", In INT-1997, 203-206.