APPARATUS AND METHOD FOR PROCESSING AUDIO SIGNAL AND FOR PROVIDING HIGHER TEMPORAL GRANULARITY FOR COMBINED UNIFIED SPEECH AND AUDIO CODEC (USAC)

摘要

FIELD: physics, acoustics.SUBSTANCE: invention relates to audio signal processing. The apparatus for processing an audio signal comprises a signal processor and a configurator. The signal processor is configured to: receive a first audio signal frame having a first configurable number of samples of the audio signal; upsampling the audio signal by a configurable upsampling factor to obtain a processed audio signal; outputting a second audio signal frame having a second configurable number of samples of the processed audio signal. The configurator is configured to: configure the signal processor based on configuration information such that the configurable upsampling factor is equal to a first upsampling value when a first ratio of the second configurable number of samples to the first configurable number of samples has a first ratio value; configure the signal processor such that the configurable upsampling factor is equal to a different second upsampling value, when a different second ratio of the second configurable number of samples to the first configurable number of samples has a different second ratio value.EFFECT: simplification of the device and providing higher temporal granularity for a combined unified speech and audio codec.20 cl, 13 dwg