Patent ID: 7529664
Filing Date: 2009-05-05
Classification: G10L

Abstract:
1. A method of processing speech comprising: obtaining an input wideband speech signal including a background noise; decomposing said input wideband speech signal into a voiced portion and a noisy portion using an adaptive separation component having a filter cut-off frequency, wherein said voiced portion is a portion of said input wideband speech signal for waveform matching and said noisy portion is a portion of said input wideband speech signal not for waveform matching, and wherein said filter cut-off frequency is above 4 kHz; processing said voiced portion of said input wideband speech signal to obtain a first set of parameters using analysis by synthesis approach; and processing said noisy portion of said input wideband speech signal to obtain a second set of parameters using open loop approach; transmitting said first set of parameters, said second set of parameters and a voicing index to a decoder, wherein said voicing index provides said filter cut-off frequency to said decoder for a wideband signal composition.