Intermittent Static-y Popping Sounds on Mics?

[midwinter]

Hi all.

I'm having a problem with an intermittent, static-y popping sound showing up on my mics.

It starts about 2.5 seconds into this clip.

The mics are a pair of little blondies in stereo. The issue is in the right channel. I had been recording all day just fine. Didn't even notice this until later. But this has happened with all my mics.

Is this a power conditioning thing? This is recorded in my old house (1930s), but the power in the room is modern. A mic cable thing?

Thanks in advance for any help y'all might offer. This is really driving me nuts.

[RedJoker]

I've seen this from my computer and I traced it down to the USB chain. I can't tell you how to get rid of it but I've gotten it to go away by changing the USB port. Sometimes its one the whole chain and it didn't matter.

[midwinter]

Oof. That means a new iPad dock. This is an Alesis ioDock, so there's no USB cables anywhere.

Is anyone else using one of these?

[Ty Ford]

Got a cell phone nearby?

Anything else that transmits or generates?

iPad?

A Power Company Smart Meter?

Regards,

Ty Ford

[midwinter]

This is recorded on an iPad. I'm increasingly convinced it's the wifi or LTE. I'm going to try putting it in airplane mode from now on.