| 摘要 |
PURPOSE:To provide a loop device of a sampling sound source capable of executing loop reproduction without generating waving of a specified period. CONSTITUTION:A modulation signal generating section 10 generates a modulation signal WM of the specified frequency. This modulation signal WM is inputted to a waveform reading out section 7. This waveform reading out section 7 reads out waveform data out of a waveform memory 8 at a speed corresponding to the scale delivered from a CPU 1 and changes the reading out speed in accordance with the modulation signal WM. The modulation signal WM from the modulation signal generating section 10 is inputted via an inverter 11 to a DSP 12, by which the opposite phase modulation signal WMR which is of an opposite phase from the modulation signal WM is inputted to this DSP 12. The DSP 12 writes the waveform data from the waveform reading out section 7 at the speed W corresponding to a sampling frequency fs=20KHz, reads out fs from the RAM 13 at the speed changed according to the opposite phase modulation signal WMR and outputs this fs to a D/A converter 16. |
