| 摘要 |
PURPOSE:To eliminate the time difference of L, RCH outputs by providing a hold device holding voltages of L, RCH in response to the output of L, R channel CH of a D/A converter, and a signal hold device to either of the channels. CONSTITUTION:A signal inputted to a D/A converter 1 is separated into L and RCH signals, they pass respectively through amplifiers 4, 6 and held to voltage hold capacitors C10, 11 in response to the input signal respectively via switch SW8, 9 switched alternately by control signals 12, 13. The voltage of LCH subject to holding (10) is held to a signal holding C17 via a buffer amplifier 5 through an SW16 switched in synchronizing with an SW9 of the RCH. The voltage of RCH held in the C11 is outputted through a buffer amplifier 7 and an LPF3 and the signal of LCH held in the C17 passes through a buffer amplifier 15 and the LPF2, and outputted without time difference with the signal of RCH. |
