DEVICE AND METHOD FOR EFFECTIVE SYNTHESIS OF SYNUSOID AND SWIP-SYNUSOID BY USING SPECTRAL PATTERNS

摘要

FIELD: physics.;SUBSTANCE: device for generating an output audio signal comprises a processing unit for processing a spectrum of the coded audio signal to obtain a spectrum of a decoded audio signal comprising a plurality of spectral coefficients, each of the spectral coefficients having a spectral arrangement in the spectrum of the coded sound signal and the spectral value. The spectral coefficients are sequentially ordered according to their spectral location in the spectrum of the coded sound signal so that the spectral coefficients form a sequence of spectral coefficients. In addition, the device comprises a replacement unit for replacing, at least, one or more pseudo-coefficients with a specific spectral pattern to produce an altered audio spectrum. The determined spectral pattern comprises, at least, two template coefficients, each of, at least, two of the pattern coefficients having a spectral value.;EFFECT: increasing the efficiency of audio coding with low latency and low data rate.;23 cl, 17 dwg, 4 tbl