Patent ID: 8957295
Filing Date: 2015-02-17
Classification: G10H

Abstract:
1. A sound generation apparatus comprising: a serial memory that stores information in units of m bits per address, the stored information including waveform data representing a plurality of waveform samples, the serial memory being capable of performing different input/output operations including n-bit input/output operation for serially inputting and outputting n bits per clock using n pins (m and n being integers equal to or greater than 2 and m>n); an access unit that performs a read access to the serial memory for reading therefrom the waveform data; and a tone generating unit that has a plurality of channels operating in time-divisional manner to generate therethrough sound signals based on waveform samples read from the serial memory, each channel issuing a sample request for a waveform sample to the access unit with specifying a read address of the waveform sample, wherein upon power on or reset of the sound generation apparatus, the access unit sets the serial memory to enable the n-bit input/output operation, and in response to the sample request from each channel of the tone generating unit, the access unit uses an n-bit input/output instruction to read the waveform sample by n bits per clock from a lead address that is the read address specified by the sample request, and supplies the waveform sample read from the serial memory to the tone generating unit.