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Archived from groups: rec.audio.tech (More info?)
On Wed, 08 Jun 2005 14:48:33 GMT, "Tim Martin"
<tim2718281@ntlworld.com> wrote:
>
>"Richard Crowley" <rcrowley7@xprt.net> wrote in message
>news:11ads6hp0chg949@corp.supernews.com...
>
>> Congratulations, you have re-invented the microphone.
>
>I think by "microphone" people normally mean a transducer that converts
>changes in air pressure into electrical signals.
Indeed they do, although some microphones such as ribbons are more
velocity-sensitive.
>It's possible to measure movement without that, and in fact there are
>commercial devices using optical measurement to measure such movements.
Specify some. I'm well aware of such devices on machine tools, but not
in this application.
>Such devices are not generally termed "microphones".
They are, if they are used as sonic transducers. Basically, you have
*no* idea what you're talking about - but that's been obvious for some
time.
--
Stewart Pinkerton | Music is Art - Audio is Engineering
On Wed, 08 Jun 2005 14:48:33 GMT, "Tim Martin"
<tim2718281@ntlworld.com> wrote:
>
>"Richard Crowley" <rcrowley7@xprt.net> wrote in message
>news:11ads6hp0chg949@corp.supernews.com...
>
>> Congratulations, you have re-invented the microphone.
>
>I think by "microphone" people normally mean a transducer that converts
>changes in air pressure into electrical signals.
Indeed they do, although some microphones such as ribbons are more
velocity-sensitive.
>It's possible to measure movement without that, and in fact there are
>commercial devices using optical measurement to measure such movements.
Specify some. I'm well aware of such devices on machine tools, but not
in this application.
>Such devices are not generally termed "microphones".
They are, if they are used as sonic transducers. Basically, you have
*no* idea what you're talking about - but that's been obvious for some
time.
--
Stewart Pinkerton | Music is Art - Audio is Engineering