trains are bad
Headphoneus Supremus
- Joined
- Aug 31, 2005
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I've been wanting to record some vinyl, but I when I do I get a lot of DC offset in the files. I know some is typical but how could I be getting this much?
Originally the DC offset didn't seem so bad, but I was getting clipping, so I added a resistive network attenuator I had lying around, which dropped the levels dramatically, and also seems like it made the DC offset worse. This is a picture after zooming in.
Do you think this could be from my reciever tape outs, or is it my ADC in my soundcard? If I was to put a film capacitor in the line to see if it's from my receiver, what value should I use? If that doesn't fix it, do I just have to get another soundcard?
Sorry I mad the pic so little. It's zoomed up, but the dc offset seems to be about .07, with the scale set to linear. Probably it seems worse because I have attenuated the levels so dramatically; I will build a better, adjustable attenuator later.
Originally the DC offset didn't seem so bad, but I was getting clipping, so I added a resistive network attenuator I had lying around, which dropped the levels dramatically, and also seems like it made the DC offset worse. This is a picture after zooming in.
Do you think this could be from my reciever tape outs, or is it my ADC in my soundcard? If I was to put a film capacitor in the line to see if it's from my receiver, what value should I use? If that doesn't fix it, do I just have to get another soundcard?
Sorry I mad the pic so little. It's zoomed up, but the dc offset seems to be about .07, with the scale set to linear. Probably it seems worse because I have attenuated the levels so dramatically; I will build a better, adjustable attenuator later.