FIELD: information technology.
SUBSTANCE: described is a method of forming a window, which is used to encode an audio signal, involving steps on which: an audio signal is received; the audio signal is split into multiple frames; it is determined whether a frame in the multiple frames is associated with a non-speech signal; a window function of the changed modified discrete cosine transform (MDCT) is applied to the frame to form a window, if it was determined that the frame is associated with the non-speech signal, where the first region for population with zeroes and the second region for population with zeroes are formed as part of the window; and a the frames are encoded.
EFFECT: maintaining perceptible quality of the reconstructed speech signal during transmission of minimum amount of information over the channel.
22 cl, 12 dwg
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