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Re: Analog-to-Digital Audio:



On Fri, 2008-12-05 at 15:31 -0500, Jeff Maxwell wrote:
> I am in need of a way to process an analog stereo input device
> to digital.
>       
> I basically have old cassettes and reel-to-reels that I would
> like to convert to digital.

I've found Audacity to be one of the better choices, as you have fairly
real time VU meters.  That allows you to capture at the best signal
level, in the first place (not too quiet that you lots of noise, and not
too loud that you have distortion).  Though, working in audio/video
production, and having other gear to hand, I opted for running the
player through a mixer with really good metering, after making some test
recordings to work out what were the right levels between equipment.

Another issue is hum and noise.  Computers are none-too-quiet, and earth
loops between your computer and audio equipment are going to cause
problems.  If your audio equipment is un-earthed, that won't be an
issue.  If you get hum loops, then some decent audio transformers
between them will be the easiest solution.

Resist the urge to attempt to fix hum and noise problems digitally, it's
much better to capture a good signal in the first place.  There are some
problems that you just can't get rid of, or the attempt makes yet
another mess out of the audio signal.

I found the best way of dealing with audio sources with different
sections was to caption the source without any pauses in your capture,
then carve it into the appropriate sections on the computer.  Audacity's
fade-in & fade-out filters make it easy to make the hiss neatly
disappear between tracks, so it doesn't go "click" between tracks on CD
recorders and/or players that insist on badly muting between tracks.

-- 
[tim localhost ~]$ uname -r
2.6.27.5-41.fc9.i686

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