GAIN SHAPE ESTIMATION FOR IMPROVED TRACKING OF HIGH-BAND TEMPORAL CHARACTERISTICS Russian patent published in 2018 - IPC G10L19/02 G10L21/38 

FIELD: signal processing devices.

SUBSTANCE: invention relates to signal processing. Method includes determining, at a speech encoder, first gain shape parameters based on a harmonically extended signal and/or based on a high-band residual signal associated with a high-band portion of an audio signal. Method also includes determining second gain shape parameters based on a synthesized high-band signal and based on the high-band portion of the audio signal. Method further includes inserting the first gain parameters and the second gain shape parameters into an encoded version of the audio signal.

EFFECT: technical result of the invention is to provide the possibility of adjusting the transmission ratio during the reproduction of the audio signal from the encoded version of the audio signal.

30 cl, 7 dwg