>>8674912All EL components cause interference, so it's something to consider whenever you are using them along side other electronics. You can minify it by making sure your inverter is the appropriate spec for you length/size of EL (meaning if you cut it you may have to downgrade the inverter), making sure your inverter isn't cheap (ellumiglow is good, just posting for the people who think aliexpress is actually a good place to get this stuff), or by using some shielding. The last is the trickiest because the wire/panel more or less acts as a antenna, amplifying the inverter signal, but obviously you can't just wrap up all the EL all willy nilly because that defeats the purpose.
Mics and speakers are tricky to shield for the same reason. If you bought a preassmbled mic jig, you can look at it closer and make sure they used proper audio wire with shielding that is grounded.
I've seen that they also sell clear anti-static coating spray, I haven't tried it myself (though I have some conductive clear coat in a bucket which sounds to be the same thing), and you could try spraying your EL components with it if they do not have to flex or move, then ground that. Just make sure you absolutely have no exposed wired before doing so.
Alternately you can look in your mask and see if there's any way to work some shielding in, but unless you can completely surround the problem areas then it's tricky. If it's just the wire connected to the mic that's picking up the interference, that's simple enough to address, but shielding a mic is harder without impeding the sound quality a bit, but if all the EL wire is on the outside and the mic is on the inside, then you could perhaps line your helmet with some shielding, but things like eye holes and mouth holes will still let some interference through.
