| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a tuner which displays the difference of a sound generated by the tuner from an inputted sound. <P>SOLUTION: When a switch is set to a sounding mode, a microcomputer generates a reference sound, which is outputted through a speaker. At the same time, the microcomputer sends a microphone ON/OFF signal in an Lo state to turn off a microphone so that the microphone does not pick up the reference sound outputted from the speaker as a tuned signal. <P>COPYRIGHT: (C)2004,JPO</p> |
