I seem to be picking up a strange crackling sound when recording a mix.
Im using two Numark CDJs and Numark M4 mixer, straight into an Imac via a phone to Jack line in. I can’t see any evidence at all of clipping at all in the recording, I have the gains down very very low. If anyone could suggest why this might be would be massively appreciated. Would it be worth getting an interface,?
I don’t use Macs, but it looks like the problem is in your Mac, so we’ll need to wait for one of the Mac guys. The first thing they will ask you is exactly what type of Mac you have (model number?) and which version of OS X. You can save a bit of time by posting that information now.
The next thing they will ask is “what is the exact three-section version of Audacity from Audacity > About Audacity and whether you obtained the .dmg installer or the zip.”
OK so if you have not already done so I would recommend playing with Audio to buffer in Audacity Preferences.
Also don’t get extravagant with sample rates. Set Audacity project rate bottom left to 44100 Hz or 48000 Hz then go to /Applications/Utilities/Audio MIDI Setup and setup the built-in audio input for the same rate you chose in Audacity.