Patent ID: 9324333
Filing Date: 2016-04-26
CPC Classification: G10L

Claim Text:
1. A method of processing an encoded speech signal in a decoder comprising a filter bank, said method comprising: receiving the encoded speech signal by the decoder; based on information from a first encoded frame of the encoded speech signal, obtaining a description of a spectral envelope of the first encoded frame of the encoded speech signal over (A) a first frequency band and (B) a second frequency band different than the first frequency band by the decoder; based on information from a second encoded frame of the encoded speech signal, obtaining a description of a spectral envelope of the second encoded frame of the encoded speech signal over the first frequency band by the decoder, wherein the first encoded frame and the second encoded frame are inactive frames; based on information from the first encoded frame, obtaining a description of a spectral envelope of the second encoded frame over the second frequency band by the decoder; and combining the obtained description of the spectral envelope of the second encoded frame over the first frequency band with the obtained description of the second encoded frame over the second frequency band to produce a decoded signal by the filter bank, wherein the first encoded frame is encoded according to a wideband coding scheme, wherein the second encoded frame is encoded according to a narrowband coding scheme, wherein the second encoded frame occurs after the first encoded frame, wherein the first encoded frame and the second encoded frame are not consecutive frames of the encoded speech signal, and wherein all frames of the encoded speech signal between the first encoded frame and the second encoded frame are inactive frames.