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A Scheme for reducing distortion of IMBE tones by mixing harmonics of a pitch

IP.com Disclosure Number: IPCOM000011397D
Original Publication Date: 2003-Feb-18
Included in the Prior Art Database: 2003-Feb-18

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Dipendra Chowdhary


IMBE (Improved Multi-Band Excitation) is a technique for compression and encoding of voice signal. In a digital communication system, a tone is often coded into IMBE vectors at the source and the IMBE vectors are decoded at the destination. This coding and decoding causes significant distortion in the tone.