| 摘要 |
An ensemble system reproduces a performance on an automatic player piano expressed by a set of MIDI music data codes in ensemble with another performance recorded in a compact disc in the form of audio data codes; the ensemble system firstly determines the pitch of the fundamental tone produced through vibrations of a string, then searching the audio data codes for a corresponding tone, calculating a ratio between the pitch of the fundamental tone and the pitch of the corresponding tone, and determining a data read-out speed for the audio data codes; while the MIDI data codes are being supplied to the automatic player piano, the audio data codes are transferred to a speaker system at a speed equal to the product between the standard speed and the ratio so that the piano tones are well harmonized with the electronic tones.
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