Re: Is this a good way to test pre-amp hiss of a digital recorder?
- From: kludge@xxxxxxxxx (Scott Dorsey)
- Date: 3 Jun 2006 15:40:21 -0400
<pandorapayne@xxxxxxxxxxx> wrote:
This is what I was thinking.
Set the recorder for mic-in, but don't actually plug
a mic in. Then get the recording started and run the
recorder through the various levels of gain, from low
to high. Take the resultant recording and load it into
your audio editing program and check the dB
levels at the different gain settings that were used.
Any reason why this wouldn't work and be accurate?
Because the noise level will drop considerably when a mike is plugged in.
Instead, put a 600 ohm resistor across the input and measure the noise then.
Noise with a mike will be similar (probably lower if the mike output Z is
lower).
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."
.
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