Patent ID: 9620134
Date: 2017-04-11
CPC Classifications: G10L

Claim:
1. A method comprising: performing a first determination, at a speech encoder, of first gain shape parameters based at least in part on energy levels of a first plurality of sub-frames of a harmonically extended signal, based at least in part on energy levels of a second plurality of sub-frames of a high-band residual signal associated with a high-band portion of an audio signal, or any combination thereof; generating a high-band excitation signal based at least in part on the first gain shape parameters; generating a synthesized high-band signal based on the high-band excitation signal; performing a second determination of second gain shape parameters based on the synthesized high-band signal and based on the high-band portion of the audio signal; and inserting the first gain shape parameters and the second gain shape parameters into an encoded version of the audio signal.