| 摘要 |
<p>PURPOSE:To make a program searching easy by forming a retrieval data based on the output and the clock of no sound section of a digitized audio signal. CONSTITUTION:An audio signal is fed to an analogue-digital converter (A/D) 103, quantized after sampling by a specified frequency and fed to a data selector 105 at a specified timing. The data selector 105 feeds an output of a data generator 104 at a timing corresponding to an ID 1 once for 1 field period and at the other timing, the output of an A/D 103 is supplied to a RAM 107. In a RAM 107, a parity words or the like obtained from an error correcting circuit 106 and an address data or the like obtained from an address controller 108 are arranged so as to correspond to the data obtained from the data selector 105.</p> |
