| 摘要 |
PROBLEM TO BE SOLVED: To simplify processing at the time of performing the communication of voice data in two-way by transmitting data to the outside with the number of samples in accordance with a clock signal value in which read audio recorded data are counted. SOLUTION: A clock counter 102 counts the number of clocks which are to be generated among the clock supplied from a clock oscillator 104, an SOF being the SOF receiving signal of a USB transmitting and receiving logic 114 and a next SOF to preserve it in a memory so that the logic 114 is readable and resets a current count value. Then, the number of samples of audio recorded data which are to be transmitted in one frame is calculated from this value and the audio data of the number of the samples are correctly taken out from the transmission buffer of the digital audio buffer 112 and the data are transmitted to a host 10 as a packet. Since the number of the audio recorded data is calculated in this manner, a packet handling processing is omitted by eliminating a packet transmission for feeding back the number of samples. |
