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Posted by Rich Grise on 03/25/06 20:09
On Fri, 24 Mar 2006 17:39:24 -0800, Winfield Hill wrote:
> Tim Wescott wrote...
>> Gordon wrote:
>>
>>> http://www.dak.com/reviews/2007story.cfm?GAT I purchased a DAK Shotgun
>>> Microphone and it is no different to a cheap michrophone for a computer
>>> there is no sound amplification,does anyone know how to get the sound
>>> to amplify?
>>>
>>> I was told it would pick up sound from 100 feet to 100 yards away but
>>> it hardly picks up sound from 1 metre away.
>>
>> All questions about DAK's integrity aside, a shotgun mic doesn't amplify
>> sounds, it merely makes the mic highly directional. You still need to
>> amplify the heck out of it, and hope that what you want to hear isn't
>> swamped by microphone and amplifier noise.
>
> I agree, shotgun mics are about directivity rather than gain. Gordon is
> expected to provide his own gain. Sorry! But in the end it's usually
> directivity that counts to attenuate the always-present offending noise
> sources, so that's not so bad.
As much as I hate to disagree, those long skinny directional cardiod
mics are _not_ "shotgun" mics.
This is a shotgun mike, there's a sketch about 1/2 way down the page:
http://members.shaw.ca/roma/twenty-eight.html
It consists of 36 tubes, from 1" to 36" long, arranged in a hexagon
with the longest one in the middle, and progressively shorter tubes
as you work your way out:
(15)(14)(13)(12)
(16)(28)(27)(26)(11)
(17)(29)(35)(34)(25)(10)
(18)(30)(36)(33)(24)(09)
(01)(19)(31)(32)(23)(08)
(02)(20)(21)(22)(07)
(03)(04)(05)(06)
Crap! I bothered to sit and draw that, and it turns out that the longest
tube has to be 37", but I'm way, way too lazy to redo it.
(and it's hard to do hexagons in ASCII. ;-) )
Cheers!
Rich
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