| 摘要 |
PURPOSE:To generate easily a calibration tone signal without any change with lapse of time and with small distortion, by successively reading out digital memories in a sampling cycle and fetching the read out information through a DA converter installed to a digital audio reproducing device. CONSTITUTION:A deglitch circuit 13 inputs the output signal of a DA converter 8 and, when a left-channel deglitch control signal LD is generated from a signal processing section 9, an electronic switch 13a is closed and stabilized parts of analog-converted left-channel signals are selected and successively outputted as left-channel signals LA. When a right-channel deglitch control signal RD is generated, another electronic switch 13b is closed and stabilized parts of analog- converted right-channel signals are selected and successively outputted as right- channel signals RA. The left- and right-channel signals LA and RA thus taken out are outputted as the reproduced signals L and R of the left and right channels after noise components are removed from the signals at low-pass filters 14a and 14b. |
