SIGNAL PROCESSING APPARATUS, SIGNAL PROCESSING METHOD, PROGRAM AND RECORDING MEDIUM

摘要

A signal processing apparatus includes a decoder for decoding a stream signa l so as to generate a digital audio signal of a low frequency effect channel and digital audio signals of first through n'th (n32) channels; an adder section for adding the digital audio signal of the low frequency effect channel and the digital audio signa l of a specified channel among the first through n'th channels, so as to generate an addition signal; an n number of D/A conversio n sections for converting the digital audio signals of the first through n'th channels, excluding the digital audio signal of the specified channel, and the addition signal into n types of analog audio signals; a first signal processing section for generating a digital audio signal of the low frequency effect channel; and a second signal processing section for generating an analog audio signal of the specified channel.