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Re: Software for frequency measurments

Subject: Re: Software for frequency measurments
From: Dan Dugan <>
Date: Sat, 5 Jul 2003 16:07:39 -0700
Klas, you wrote,

>I don't know. In real life it seems to work as any compressor. Without it,
>the frequency curve gets jumpier, exactly the same but more up and down. I=
t
>is a part of the complete analog machine, made in Germany sometimes around
>1980. Only the HP XY printer is separate.
>
>This machine has been very handly, as - when I work with a microphone
>capsule - I can set the machine to make a sweep "loop", around and around,
>and in the same time see the measured frequency response on a special
>cathode-ray tube. It looks exactly as a log. frequency scale, with x=3Dfre=
q
>and a glowing dot following the Y=3Doutput from the microphone.

That's what I envisioned from your original description. There's got
to be an averaging time delay in that detection process, and I doubt
that it can be accurate at the low end for fast one-second sweeps.
Can you compare a one-second sweep with a slow one to see?

-Dan


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