EUROSPEECH 2003 - INTERSPEECH 2003
Local frequency and time averaging and differentiating operators, using three neighboring points of critical-band time-frequency plane, are used to process the plane prior to its use in TRAP-based ASR. In that way, five alternative TRAP-based ASR systems (the original one and the time/frequency integrated/ differentiated ones)are created. We show that the frequency differentiating operator improves performance of the TRAP-based ASR.
Bibliographic reference. Grezl, Frantisek / Hermansky, Hynek (2003): "Local averaging and differentiating of spectral plane for TRAP-based ASR", In EUROSPEECH-2003, 1017-1020.