| 摘要 |
PROBLEM TO BE SOLVED: To suppress the generation of a sound break or distortion caused by the switching of a sampling frequency.SOLUTION: In a digital voice data processing device 1, when a L/R clock is inputted from a Bluetooth module 2 at 44.1 kHz, the SRC circuit 3 in the prestage of a main CPU 4 converts the frequency of the inputted L/R clock from 44.1 kHz to 48 kHz and outputs the converted clock, and when the L/R clock is inputted from the Bluetooth module 2 at 48 kHz, the SRC circuit 3 outputs the inputted L/R clock directly at 48 kHz without converting its frequency. The need for the main CPU 4 to switch the sampling frequency in software is eliminated, and it is possible to process the digital voice data with a simple sampling frequency.SELECTED DRAWING: Figure 1 |
