| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a cross fader which has improved characteristics with respect to noise, wear and degree of signal cut-off or the like. SOLUTION: The cross fader of this invention is provided with two optocouplers that transmits 1st and 2nd audio signals. A blade-shaped shutter is moved along a straight line path through manual operation. The blade-shaped shutter is inserted to the 1st optocouplers at a 1st end of the straight line path to attenuate or shut off the 1st audio signal. Similarly the blade-shaped shutter is inserted to the 2nd optocouplers at a 2nd end of the straight line path to attenuate or shut off the 2nd audio signal.</p> |
