| 摘要 |
PURPOSE:To reduce the poko-poko sound of a wind noise on a windy day, and to record more loudly and clearly a sound desired to record by operating a low-cut and gain-up circuit by a low-cut and gain-up selector switch. CONSTITUTION:On the windy day, the subject device is used as keeping its low-cut and gain-up selector switch 3 on. Therefore, the low-cut and gain-up circuit 2 operates, and reduces the frequency component of a low frequency band, and raises the gain of an intermediate and high frequency band, and the sound desired to record is amplified into the louder sound by a microphone amplifier 4. Thus, by providing the low-cut and gain-up selector switch to be used on the windy day and the low-cut and gain-up circuit 2 to be operated by that, the poko-poko sound of the wind noise is reduced, and the sound desired to record can be recorded more loudly and clearly. |
