HIGH RESOLUTION AUDIO ENCODING Russian patent published in 2023 - IPC G10L21/02 

FIELD: computer technology for audio signal processing.

SUBSTANCE: invention aims at increasing the efficiency of encoding an audio signal when streaming high-resolution audio via Wi-Fi or a mobile network without compression. It is achieved by receiving an audio signal, generating a residual signal from the sub-band signals, determining that these sub-band signals are an intense tone signal, and in response to the aforementioned determination that the sub-band signal is an intense tone signal, weighting is performed in relation to the mentioned residual signal of at least one of the one or more subband signals to generate a weighted residual signal, wherein said at least one of the one or more subband signals contains a plurality of harmonic frequencies, wherein said determination that at least one of the one or more subband signals signals is an intense tone signal, comprises a step at which it is determined that the frequency of the first harmonic of the plurality of harmonic frequencies exceeds the first predetermined threshold value and that the level of the background spectrum of the said at least one of one or more subband signals is below the second predetermined threshold value.

EFFECT: increasing the efficiency of encoding an audio signal when streaming high-resolution audio via Wi-Fi or a mobile network without compression.

15 cl, 21 dwg