| 摘要 |
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 |
