Record always clipping

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Record always clipping

Permanent link to this post Posted by dwburt » Sat Jan 06, 2018 5:33 pm

I need some handholding. I've used Audacity before to digitize analog recordings (LP and tape) but now things aren't looking right. It's new hardware and software: Asus GL753VE laptop with StarTech USB to Stereo Audio External Sound Card (is that a naive choice for audio quality?) runiing Linux Mint 18.2 and Audacity 2.1.2. When I start recording the audio track appears compressed and unhelpful - 1st screenshot. [attachment=1] When I Normalize I seem to see clipping - 2nd screenshot. This happens even when I reduce input to less than 10% - screenshot 3. Can someone suggest what I need to change?
Attachments
Screenshot from 2018-01-05 14-01-27.png
Screenshot from 2018-01-05 14-01-27.png (66.97 KiB) Viewed 1178 times
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Screenshot from 2018-01-05 14-13-26.png (77.95 KiB) Viewed 1178 times
Screenshot from 2018-01-05 14-14-30.png
Screenshot from 2018-01-05 14-14-30.png (29.56 KiB) Viewed 1178 times
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Re: Record always clipping

Permanent link to this post Posted by smokingwheels » Wed Jan 24, 2018 3:59 am

Could you share the Product ID of the StarTech USB to Stereo Audio External Sound Card?

If you have connected a Line level output to a Mic input this may cause clipping of the preamp and converter.
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Re: Record always clipping

Permanent link to this post Posted by dwburt » Sat Jan 27, 2018 4:52 pm

Sorry I didn't see your response sooner. The device is identified as StarTech part # ICUSBAUDIOB. i found that if I turn down volume on the stereo amp to nearly inaudible level then clipping is eliminated but background noise is very high. Audacity noise reduction tool seemed to do a decent job of cleaning things up to listenable quality. Still seems like a long way around for what should have been a very clean signal coming out of stereo system.
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Re: Record always clipping

Permanent link to this post Posted by autodctr » Sat Feb 03, 2018 12:52 am

In the clipping one I see that you have the input (pic of microphone) all the way up? Try reducing that until no clipping seen. I would rather have it a little low and then raise the level after recorded.
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Re: Record always clipping

Permanent link to this post Posted by kozikowski » Sat Feb 03, 2018 4:23 am

Image

I think that's the wrong thing.

I have several Startech ICUSB, etc. as in that picture. They're "Stereo" only in that they support stereo headphones. The other side is support for a mono microphone. If you look very carefully at your soundwaves, the two match. So that's not stereo. It's two copies of Left.

I use a Behringer UCA-202 stereo adapter.

Image

It has a place to plug headphones to monitor what you're doing independent of the computer and it's certified for Overdubbing.

I have two.

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