If I touched the mic or the audio interface the sound would dampen significantly (but return to the normal behavior once I removed contact). Strangely the buzz would get stronger if I got near to the mic with my face / body.
This also occurred when run through a laptop running on batteries (with the AC input / charger disconnected). I'm running it through an audio interface, but it still had a noisey 'buzz' that sounds like a very common electric hum (near large electric transformers).
#What could cause buzzing from audio interface and mic pro
Pro industry against citizens, as always.I've been trying to diagnose why my condenser mic keeps buzzing for ages. Ah, of course around the mic, too ( most important) ! This seems to be especially a German problem, since the limit values are totally lax in Germany in comparison to other EU countries like Poland or even Russia (factor 10 to 100 higher). Put a lot of aluminium foil around your device and/or the speakers and see if something changes. If there is some kind of high frequency noise (different from random noise), it could be a LTE/mobile transmitter around. These transmitters heavily disturb audio interfaces, speakers, microphones and guitars. The third thing is a big new problem, which I have on my home in the city: Mobile providers (at least in Germany) currently heavily extending LTE mobile bands by adding huge transmitter over the city.
This approach helps 100% on my crap and expensive sony vaio notebook for the internal audio (isolating ground from power supply). Try the same with the computer power connector (but do not consider this as a permanent solution, ground connector existence has a reason). On german connectors you can do this by adding lot of sticky tape to it. The second you can try is to isolate the ground of your power connector of the power plug of the audio device, if there is one. EDIT: This also happens on “high quality” / expensive interfaces. I don’t know if it’s possible to isolate the power source in a usb cable… At very first, just try with the audio power plug instead usb powered. On firewire, you can do this by buying some 1$ firewire 6pins-to-4pins adapter and a 4-pins-to-6-pins adapter (and put these together), or use a cable with a 4-pin on one side (if your computer has a 4 pin connector, too). If the audio device now can be powered either thru usb / firewire or with a separate power supply, you need to “isolate” (do not do this by hand!!) the power from firewire / usb first, to decouple the audio device from the computer. Would a separate mic preamp help, because it would be adding gain to the signal and I wouldn’t have to gain the audio interface so much?įrom my experience (which is only Firewire), it can happen that your computer power unit and / or logical board is not correctly shielded /interference-suppressed. Eventually I’d like to add more FX per track like Dub FX, but in preliminary tests, the FX chains just amplify the noise too much.Īre these things really that noisy or is there possibly something wrong with my setup?Īm I ever gonna get good performance out of a low end device like this? I’m trying to use these things as preamps for my Live Looping Tests. You wanna know what that sounds like amplified? With no microphone or cable or anything plugged in, when I turn up the gain all the way (phantom power off), the Art gets about -62db noise, and the Alesis is even worse with about -52db noise. Yet I am still getting unacceptable levels of noise off them, and I’m wondering if this is normal, or if there is something else wrong with my setup? I have tried 2 different USB audio interfaces with supposedly nice XLR preamps built-in.
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