ENCODING AND DECODING POSITIONS OF SPECTRAL PEAKS Russian patent published in 2017 - IPC G10L19/22 G10L19/02 H03M7/40 

FIELD: physics.

SUBSTANCE: audio signal segment encoding method comprises: determining, which of the two nondissipative coding circuits for spectral peak positions is used, wherein the first circuit is suitable for periodic or semi-periodic spectral peak position distributions, and the second circuit is suitable for sparse spectral peak position distributions; wherein the definition is based on the maximum distance d_max between two spectral peaks in the audio signal segment and the comparison of the number of bits required for the corresponding circuit after encoding the audio signal segment using two circuits; selecting the second coding circuit for spectral peak positions when the maximum distance d_max between two spectral peaks in the audio signal segment exceeds the threshold T; and selecting a spectral peak position encoding circuit that requires the least number of bits to encode the positions of the spectral peaks of the audio signal segment when the maximum distance d_max does not exceed the threshold T.

EFFECT: increasing the efficiency of encoding/decoding spectral peaks.

22 cl, 17 dwg, 1 tbl