| 摘要 |
PROBLEM TO BE SOLVED: To provide a tone control unit which makes a dynamic range satisfactory, prevents an overflow due to DSP, and does not use variable impedance for sound volume, etc. SOLUTION: The tone control unit is equipped with a variable attenuation processing means which attenuates the tone control range of an input signal according to a tone control value, a digital-to-analog converting means which converts the signal from the variable attenuation processing means into an analog signal, and an amplification processing means which has an amplification state wherein the tone control range of the signal from the digital-to-analog converting means is amplified and a non-amplification state wherein the signal from the digital-to-analog converting means is not amplified. |
