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Clipping/ Distortion

Posted: Thu Apr 05, 2012 2:46 am
by dochiphop
I just got a new computer and have installed the newest version of audacity 2.x on it (I was running the older one 1.x). However, when I try to record a vinyl record the distortion levels are so bad that I cant even really hear the music. I did not have this problem previously and have not changed any of the equipment set up. Any advice on settings etc that need to be adjusted to get back to normal here. Thanks

Re: Clipping/ Distortion

Posted: Thu Apr 05, 2012 4:07 am
by kozikowski
It depends on what Normal is. We can't see your room, so you need to give us a push. How do you have your system connected and what is it?
You did change the software. There is a huge change between Audacity 1 and 2 particularly the early versions of 1. The hardware settings may not follow you through the upgrade.
I just got a new computer ... have not changed any of the equipment set up.
What's wrong with that picture? So yes, you did change the setup and that may be why Audacity couldn't recreate the settings and adjustments.

Koz

Re: Clipping/ Distortion

Posted: Thu Apr 05, 2012 11:38 am
by dochiphop
I have my usb turntable connected to a pre amp and the pre amp is connected via usb to the computer.

I have adjusted to input levels on audacity when recording and playing a record but that doesn't help the distortion much at all.

Re: Clipping/ Distortion

Posted: Thu Apr 05, 2012 11:41 am
by dochiphop
also wanted to mention that all other audio sounds fine (i.e. playing a song through windows media player etc..)

Re: Clipping/ Distortion

Posted: Thu Apr 05, 2012 1:34 pm
by steve
You may need to turn down the recording level using the operating system mixer.
On Vista / Win 7 it is often necessary to set the recording level for USB turntables extremely low.

See here: http://wiki.audacityteam.org/wiki/USB_t ... ud_or_soft
and also: http://wiki.audacityteam.org/wiki/Mixer ... es#vistacp

Also, some USB turntables have a volume control hidden on the bottom of the turntable.

Re: Clipping/ Distortion

Posted: Thu Apr 05, 2012 5:07 pm
by kozikowski
In addition, USB turntables typically deliver the USB audio bitstream completely corrected for RIAA distortion. Why are you going through another Phono Preamp? If the answer is Quality, then you shouldn't be using a USB turntable to begin with. The mechanical shortcomings of those -- bad tracking, skating, pressure -- are legendary.

If the answer is you selected "corrected" for the analog turntable outputs and then you went through another phono preamp, that may be where your distortion is coming from. At the turntable, select "uncorrected" or "raw" cartridge" or whatever your turntable calls it.

Koz

Re: Clipping/ Distortion

Posted: Fri Apr 06, 2012 3:16 am
by dochiphop
Thanks alot Steve! I think you have helped me fix the problem. I really appreciate your input.

@Kozikowski... I am well aware of the shortcomings of usb turntables but that is what I have for now. And I knew it was a settings issue as Steve has pointed out and helped me solve because my exact same set up worked with the older version of audacity that I have used for years (again... with exact same set up)....

Re: Clipping/ Distortion

Posted: Sun Apr 08, 2012 3:52 pm
by dochiphop
So my problem is still not completely solved. I have turned the gain on the TT USB down to the minimun and have to adjust the input volume input in audacity to almost zero (0.1) but my sound quality still has some distortion. Also it does not sound as good as it did with the old audacity and most definitely the recording volume is lower now vs the old audacity when i listen to something i have recorded. Any more advice???

Re: Clipping/ Distortion

Posted: Sun Apr 08, 2012 4:20 pm
by steve
Could you post a short sample of your recording - just a couple of seconds in WAV (not MP3) format will do.
Short audio samples can be uploaded using the "Upload attachment" tab below the compose message box.

Re: Clipping/ Distortion

Posted: Sun Apr 08, 2012 4:35 pm
by dochiphop
here you go Steve... Thanks for your continued help. If need be i will post the same song that i previously recorded with the older version of audacity but is in mp3 format 320 kbps.