Speech pitch lag coding apparatus and method

Details Speech pitch lag coding apparatus and method Speech pitch lag coding apparatus and method

G - Physics

10

L

G10L 19/08 (2006.01) G10L 11/04 (2006.01)

Patent

CA 2166140

A pitch lag is extracted for each of a predetermined number of sub-frames. A predicted pitch lag for a pertinent sub- frame in the predetermined number of sub-frames is calculated on the basis of at least two pitch lags extracted for sub-frames other than the pertinent sub-frame or at least one pitch lag extracted for sub-frame other than the pertinent sub-frame and the preceding sub-frame by one sub-frame. A difference between the predicted pitch lag and the extracted pitch lag is then coded. Thus, an input speech signal pitch lag is coded for each sub-frame having a predetermined length.

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