A method for encoding the information is provided which realizes a high encoding efficiency especially for tonal acoustic signals without lowering the sound quality. An acoustic signal from a terminal is transformed by a transform circuit into spectral signals which are then normalized and quantized...http://www.google.fr/patents/US5737718?utm_source=gb-gplus-shareBrevet US5737718 - Method, apparatus and recording medium for a coder with a spectral-shape-adaptive subband configuration
Method, apparatus and recording medium for a coder with a spectral-shape ...
