METHOD AND DEVICE FOR CONVERTING ENCODING RATE OF ENCODED VOICE DATA

摘要

PROBLEM TO BE SOLVED: To convert the encoding rate of encoded data at high speed by converting and outputting output coded data obtained by control-outputting a parameter regulating the frame size of inputted voice coded data by a previously fixed procedure by control output. SOLUTION: Voice encoded data St (fn) encoded by an encoding rate R1 is inputted from an encoded data input terminal 21. Based on a restored code assignment and an encoding rate R2 inputted from a target encoding rate input terminal 22, a frame size re-calculating part 26 calculates the code assignment Br (fn, sb) of each band satisfying the encoding rate R2. Signal information Sg (fn, sb) bit-expressed of each band obtained by a bit stream analyzing part 14 updates signal information while keeping to be code expression based on code assignment information Br (fn, sb) of each band to output from an encoded data output terminal 29.