Patent ID: 6553436
Filing Date: 2003-04-22
Classification: G06F,G10H

Abstract:
A waveform data reproduction method applicable to a sound source circuit that is connected with a central processing unit and a memory via a bus and that reproduces waveform data in response to instructions from the central processing unit, said waveform data reproduction method comprising the steps of:receiving event data and timing data from the central processing unit, wherein the event data each designate one of waveform data to be reproduced at a timing designated by the corresponding timing data; sequentially transferring the waveform data, which are designated by the event data and are stored in the memory under the control of the central processing unit, to a buffer memory of the sound source circuit from top portions via the bus; generating a timing signal when a count value of a counter of the sound source circuit matches the timing designated by the timing data corresponding to the event data; and consecutively reproducing the waveform data, which are stored in the buffer memory, from the top portions in response to the timing signal.