DEVICE AND METHOD OF SELECTION OF ONE OF FIRST CODING ALGORITHM AND SECOND CODING ALGORITHM BY USING HARMONIC REDUCTION

摘要

FIELD: physics.;SUBSTANCE: device for selecting one of the first coding algorithm and the second coding algorithm to encode a portion of the audio signal to obtain an encoded version of a portion of the audio signal comprises a filter configured to receive an audio signal, reduce the amplitude of harmonics in the audio signal, and output a filtered version of the audio signal. The first evaluation module is provided to use the filtered version of the audio signal when estimating an SNR or segmental SNR portion of an audio signal as a first quality score for a portion of an audio signal that is associated with the first coding algorithm without actually encoding and decoding a portion of the audio signal using the first coding algorithm. The second evaluation module is provided for estimating the SNR or segment SNR as the second quality score for the portion of the audio signal that is associated with the second encoding algorithm.;EFFECT: reducing the complexity of the choice between the first coding algorithm and the second coding algorithm.;15 cl, 5 dwg