Patent ID: 8796527
Filing Date: 2014-08-05
Classification: G10H

Abstract:
1. A tone reproduction apparatus for reproducing a first audio signal and a tone signal, based on music piece performance data, in synchronism with each other, said tone reproduction apparatus comprising: an acquisition section which acquires a second audio signal, the second audio signal being an audio signal obtained by embedding, into the first audio signal, watermark information indicative of content of the music piece performance data to be reproduced in synchronism with the first audio signal, the watermark information being embedded in the first audio signal in such a manner as to be positioned in a frequency band higher than frequency components of the first audio signal; an audio reproduction section which reproduces the first audio signal on the basis of the second audio signal; a decoding section which decodes the watermark information from the second audio signal acquired by said acquisition section; a tone reproduction section which identifies, on the basis of the watermark information decoded by said decoding section, content of the music piece performance data to be reproduced and reproduces the tone signal based on the music piece performance data in accordance with the identified content; wherein a plurality of the watermark information is embedded in correspondence with a plurality of reproduction time positions along a time axis of the first audio signal, and each of the watermark information identifies at least one tone.