METHOD AND CIRCUIT FOR REPRODUCING AUDIO SIGNAL

摘要

PURPOSE: To prevent audibility due to interpolation from being generated as for a reproducing method for an audio signal which performs interpolation once or more before reproduction. CONSTITUTION: The I flag output of an interpolating means 2 is connected to a threshold value evaluating and processing stage 13 and a physiological characteristic correcting and control stage 14, and this output is reduced under the control of an analog signal processing circuit 11 according to whether or not an interpolation rate exceeds the amplitude of the relatively high frequency of an analog audio signal by more than a predetermined threshold value.