Screeching sound when recording

Audacity Help Forum macOS
1

Hi all,

I have two turntables connected to a Traktor Z2 mixer. The mixer is connected to a Scarlett 2i4 through XLR cables, scarlett is plugged into my macbook pro. I would like to record some vinyl with audacity, but the recorded audio has a horrible screeching noise throughout. What am I doing wrong? Thanks.

2

Make sure you have selected the Scarlet USB interface in Audacity’s Device Toolbar. The “screeching noise” is usually feedback between the Macbook microphone and speakers.
– Bill

3

Thanks for your reply, I have the Scarlett selected in the device toolbar but the screeching sound still happens when I listen back to the recording, also when I export the file as an mp3. Any ideas how to get rid of it?

4

How are you listening to the playback? Through the macbook’s internal speakers, or through the mixer?

If you plug your headphones into the mixer and play a vinyl, with and without recording in Audacity, do you hear the screeching sound?

– Bill