Quality of speaker dismal

Hi.

The intercom function is one I thought I would never use so paid it no attention. My other half thought it would be fun to surprise me and speak to me via the camera while she was traveling.

I thought it was some sort of alarm when she said hello and even checked the app to make sure alarm settings were off.

Has anyone tested theirs and what’s it like. Two of my cameras sound like Donald Duck with a bad case of tonsillitis, the other not much better. There’s a pronounced rattle and vibration as if the speaker is not fixed. It’s to the point the voice is barely intelligible.

Anyone tried theirs?