digital with the standard for digital versatile disc (dvd) compatible audioverarbeitungssystem

摘要

A digital audio processing system processes digital audio data having a higher quality than the quality of digital audio data provided by DVD video standard so as to be compatible with the DVD video standard. The digital audio processing system includes a decimation filter (11) for decimation-filtering first digital audio data and generating second digital audio data which meets the DVD video standard. A sampling and filtering unit (13) up-samples and filters the second digital audio data and outputs third digital audio data obtained by the up-sampling and filtering. A subtraction means (12, 14) subtracts third digital audio data from corresponding first digital audio data and generates residual data which can restore the first digital audio data, and an encoding means (15) encodes the residual data generated by the subtraction means and generates the encoded residual data. IMAGE