SYSTEM AND METHOD FOR MERGING PLURAL AUDIO STREAMS

摘要

PROBLEM TO BE SOLVED: To provide a synthesized device where plural independent digital audio streams are decoded and merged by mixing a first decoded stream and a second formatted stream and outputting it as a merged audio signal. SOLUTION: An audio PCM reproduction macro 25 for formatting a second audio PCM data taken out from a system memory 22 is supplied for mixing it with a first audio PCM signal output from an audio decoder 26 which is not compressed. Outputs from the audio decoder 26 and the audio PCM reproduction macro 25 are sent to a mixer 28 for merging the two audio streams to a single audio output signal 13. Output from a video decoder 18 contains a decoded video signal 12. The video signal 12 and the audio output signal 13 are sent for displaying them to a viewer.