METHOD AND APPARATUS FOR ENCODING AND DECODING Russian patent published in 2012 - IPC G10L19/00 G10L19/14 

FIELD: information technology.

SUBSTANCE: method of encoding involves: extracting background noise characteristic parameters within a hangover period; for a first superframe after the hangover period, performing background noise encoding based on the extracted background noise characteristic parameters; for superframes after the first superframe, performing background noise characteristic parameter extraction and DTX selection for each frame in the superframes after the first superframe; and for the superframes after the first superframe, performing background noise encoding based on extracted background noise characteristic parameters of the current superframe, background noise characteristic parameters of a plurality of superframes before the current superframe, and a final DTX selection.

EFFECT: reducing signal transmission band while preserving quality of signal encoding.

24 cl, 10 dwg, 1 tbl