| 摘要 |
PROBLEM TO BE SOLVED: To eliminate digital distortion in a musical signal and to reduce a quantization noise. SOLUTION: A master volume 11 consists of a double volume and an analog value of a musical signal outputted from a sound source 4 is changed only in a small volume area by one side volume VR1. Further, the digital value of the musical signal is changed only in a large volume area in the sound source 4 by another volume VR2. That is, the volume of the musical sound finally outputted is decided by the total value of the musical signal adjusted by two volumes. |
