| 摘要 |
PURPOSE:To record an audio signal in which low and high frequencies are well balanced by inserting a high-cut filter with a prescribed characteristic to an audio signal line when the frequency characteristic of a recording system is switched to a wind noise eliminating characteristic. CONSTITUTION:With a switch 12 thrown to the position of a contact N, an audio signal Sn from a microphone 11 is recorded by a characteristic shown in a curve 1 in figure, that is, by a standard frequency characteristic. Moreover, with the switch 12 thrown to the position of a contact W, the audio signal Sn from the microphone 11 is recorded in a state of a signal Sw by a characteristic shown in a curve 5 in figure. Then in this case, since the frequency characteristic of the audio signal Sw is that shown in the curve 5, a wind noise signal component is reduced by a filter 13 and a high frequency is attenuated or cut off by a filter 14, then the audio signal Sw has a sound quality offering pleasure of listening in which low and high frequencies are well balanced. |
