Re: Shotgun microphones

On Thu, 26 Jan 2006 08:33:52 +0000, poppy.uk@xxxxxxxxxxxxxxxxxxxxxxxx
(Adrian Tuddenham) wrote:

>Richard Crowley <richard.7.crowley@xxxxxxxxx> wrote:
>
>> "Adrian Tuddenham" wrote ...
>> > GregS wrote:
>> >
>> >> This helix has little directional properties. This
>> >> mic amplifies sound by resonating to overcome tape
>> >> and preamp noise.
>> >
>> > Resonance is not the same thing as amplification.
>> >
>> > Resonance may increse the energy transfer by reducing the impedance
>> > mismatch, amplification uses an external supply of energy to increase
>> > the power of a signal.
>>
>> They have found it pretty handy for radio reception for several decades.
>
>Tuning (resonance) is not the same thing as amplification.
>
>The power coming out of a tuned circuit cannot be greater than the power
>put into it.

I can - briefly. It is the energy coming out that can't exceed that
going in.

d

Pearce Consulting
http://www.pearce.uk.com
.

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