Patent ID: 8239190

Claim:
A method of communicating speech, comprising: time-warping a residual low band speech signal to an expanded or compressed version of the residual low band speech signal; time-warping a high band speech signal to an expanded or compressed version of the high band speech signal, wherein the time-warping of the high band speech signal comprises: determining a plurality of pitch periods from the residual low band speech signal; overlap/adding one or more pitch periods of the high band speech signal if the high band speech signal is compressed, using the pitch periods from the residual low band speech signal; and overlap/adding or repeating one or more pitch periods of the high band speech signal if the high band speech signal is expanded, using the pitch periods from the residual low band speech signal; and merging a synthesized version of the time-warped residual low band and the time-warped high band speech signals to give an entire time-warped speech signal.