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Re: Analog-to-Digital Audio:



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 do have an old CD recorder that I have been using but it has
        started
        to have issues not being able to read the CDs I insert.
I would think the better method would be some way to connect the
        audio
        output of the cassette/reel-to-reel device to the input of my
        sound card
        and do some type of capture.
Has anyone had any success at this and how do handle 2 rca type
        outputs
        from the analog to the single sound card input?
Thanks.
You have had a lot of advice on hardware and software, I'll just add that the quality of the result is limited by the worst hardware in the chain. So unless you are going to buy new hardware to play the old cassettes and reel-to-reel, or the r2r is half inch tape recorded in a studio with top equipment, you will probably not lose a lot by using a decent sound card as the A-D conversion.

For two channel input I have used "rec" from the sox package, and left every ugly thing in the first recording for removal after the fact. Then you can use various tools to remove noise, boost quiet segments, etc. Some of the stuff on tape may be compressed (Dolby or similar), that's good, you can expand it later and it help signal to noise.

You might want to record once and use the level check in sox to tell you how much you can boost gain without clipping. Then record again at higher gain. Remember that if you have loud clicks and pops, you can boost gain and let them clip, fidelity is not an issue there.

Finally, for records, there is a USB connected turntable I just saw advertised, I think it was about $200, which is sort of borderline between consumer and audiophile pricing. If you have a decent table and preamp probably not needed.

--
Bill Davidsen <davidsen tmr com>
  "We have more to fear from the bungling of the incompetent than from
the machinations of the wicked."  - from Slashdot


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