Patent ID: 8271110

Claim:
A sound source supply apparatus for providing a service for playing music via a portable terminal, the sound source supply apparatus comprising: a sound source file storage device for preliminarily storing a plurality of types of processed sound source files produced by processing an original sound source of the music so as to reduce degradation of sound according to a plurality of types of codec characteristics; and a sound source playback device for determining a codec type of the portable terminal from a start signal indicative of a playback request when the sound source playback device receives the start signal, playing back one processed sound source file corresponding to the determined codec type selectively from the plurality of types of processed sound source files, and supplying the one processed sound source file to the portable terminal so as to play the music via the portable terminal, wherein any of the plurality of types of processed sound source files is produced by processing the original sound source so as to silence three successive frames beginning from a frame that is regarded as a noise if the original sound source is not processed, out of audio frames in the original sound source.