FIELD: audio signal processing means.
SUBSTANCE: method comprises filtering temporal noise generation (TNS) of an information signal which includes a plurality of frames. For each frame, selecting (S34) between filtering by first filter (14a) and filtering by second filter (15a), impulse response of which has lower energy, based on frame metric, wherein second filter (15a) is not an identity filter. Frame is filtered using filtration selected between filtration by first filter (14a) and filtration by second filter (15a). First filter (14a) is modified to produce second filter (15a) with reduced pulse response energy.
EFFECT: technical result is higher efficiency of audio encoding.
22 cl, 14 dwg
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