Tag Info

To confirm that the body of your mic is grounded properly you can use an ohm multimeter and measure between the body and pin 1 of the mic. If it shows more than 0 ohms then you have a grounding problem with your mic. You should also try swapping out mic cables and, if possible, try a different preamp to see if that's where the issue lies.

This is a capacitive coupling issue. It can be fixed by properly shielding all the electronic parts, i.e. surrounding them with some conductor connected to ground. Hackish though it sounds, the "human ground" is actually quite a common "solution" to this problem: on most electric instruments, the strings are connected to ground, so whenever you actually play ...

For some reason Lenovo X200s and X201 have a problem with this. It's probably just specific to the Core 2 chipset: Intel(R) Core(TM)2 Duo CPU L9600 @ 2.13GHz Anyway, simply disable all power management functionality in the BIOS. It will all cause a draw on something and result in high pitched audio fluctuation. Others with a Core2 have ...

A USB hub will probably tie all the grounds together, so that won't help you break your ground loop. Update: I just checked a Belkin F5U701 hub with my multimeter (in continuity mode). The grounds of all the USB ports are tied together and tied to the ground of the power supply.

That device is built around the ADuM4160. I have used that device to isolate USB and it works great, however I have never used it for audio applications. It should break a ground loop, assuming that is the problem that you are hearing. Note that the ADuM4160 max speed is 12 Mbps. Some USB devices expect to be able to function at 480 MBps, but an audio ...

Run all of your equipment from a common ground (simplest way: string everything off a single multiway adapter, although be careful of the current draw on the poor socket and your house's RCDs and building ringmain if you have multiple 13A devices!). If you have to cross power and audio cables, do so at right angles. NEVER run power and audio cables in ...

If you are unable to remove the noise via analog means, you can use a noise reduction plugin. Many plugins have 50hz, 60hz, etc. presets built in, but you can also record in the noise and the plugin will subtract that frequency component from the signal. Otherwise, the ghetto way to do it is to use a notch-filter at 50hz.