Patent ID: 7420115

Claim:
An access controller apparatus for use in a musical sound signal generating system including a first recording medium for storing wave data, a second recording medium for storing the wave data and having an access speed faster than that of the first recording medium, a transmitting section for reading the wave data sequentially in units of a data block composing a part of the wave data from the first recording medium to thereby transmit the wave data to the second recording medium, and a musical sound signal generating section having a plurality of sound channels each of which reads the wave data from the second recording medium at a speed corresponding to a reproduction rate of each sound channel to reproduce a musical sound signal according to the read wave data, the access controller apparatus comprising: a detecting section that detects one or more sound channels that have enough vacant area for storing respective next data blocks in the second recording medium, and further detects a sound channel which will complete the reproducing of the data block stored in the second recording medium at the earliest timing among the detected one or more sound channels based on the reproduction rates of the respective sound channels; and a sound channel specifying section that controls the transmitting section to transmit the next data block of the sound channel detected by the detecting section from the first recording medium to the second recording medium.