| 摘要 |
A digital sampling instrument having the features of non-redundant data loading, single-cycle-fetch-and-store memory operations, and volume scaling. Sound data stored in a floppy disk (26) is assigned to a unique number associated with a sound stored in a sound RAM (60) to determine if loading the sound from the floppy disk (26) would be redundant. An address generator circuit located within an address generator/data decoder circuit (50) includes pipeline architecture to enable both a fetch and store operation to be performed in a single memory clock cycle. Volume scaling is achieved by storing both sound data and volume data in logarithmic form, adding the two, and converting to a linear format. |
