Patent ID: 8725499
Filing Date: 2014-05-13
Classification: G10L

Abstract:
1. A method of processing a speech signal, said method comprising: generating, by a sequence generator of a computer, a sequence of spectral tilt values that is based on a plurality of inactive frames of the speech signal, wherein the sequence of spectral tilt values comprises a sequence of reflection coefficients, wherein each of the spectral tilt values is based on at least one reflection coefficient of a corresponding inactive frame of the speech signal, the at least one reflection coefficient comprising at least one of a first reflection coefficient of the corresponding inactive frame or a second reflection coefficient of the corresponding inactive frame; calculating, by a calculator of the computer, a change among at least two of the reflection coefficient-based spectral tilt values; and for an inactive frame among the plurality of inactive frames, deciding, by a comparator of the computer, whether to transmit a description for the frame, wherein said deciding whether to transmit a description for the frame is based on the calculated change.