| 摘要 |
PURPOSE:To provide a built-in type microphone device which can collect the sounds in response to the zooming mechanism of a video camera, etc., also has the excellent resistance to the vibrations, the approximate noises, the winds, etc. CONSTITUTION:The 1st and 2nd variable amplifiers 14 and 15 are controlled by the zoom signal transmitted through a 1st controller 17. Thus the outputs of the 1st and 2nd equalizers 11 and 12 are varied. Then a 3rd variable amplifier 16 is controlled by the zoom signal transmitted via a 2nd controller 18. Thus the output of a 3rd equalizer 13 is varied. A 1st mixer 19 mixes the outputs of the amplifiers 14 and 16, and a 2nd mixer 20 mixes the outputs of the amplifiers 15 and 16 respectively. |
