| 摘要 |
PURPOSE:To record an effective detect signal out of sound detecting elements which are more in number than input channels, in accordance with locations where loose parts are generated, by recording output signals of sound detecting elements which are decided by the content of input signals to a storing device. CONSTITUTION:When output signals a1-an of(n) pieces of sound detecting elements are supplied to a signal selector 2 as the input, and an external signal(c)is supplied to an ROM1 whose signal ratio of input//output is 1:1, a signal (d) is read, and, based on the content of the signal (d), a part signals b1-bm out of the signals a1-an are recorded in a recording device 3. Therefore, it is possible to correlate contents 1 -n of the input signal (c) to the ROM1 with detect channels for loose parts, and to selectively record signals from sound detecting elements near the loose parts in accordance with the detected channels for loose parts. |
