OK, I heard the radio over my cpap too.

Gee, are you anywhere near me in good ol' Merryland?? Maybe we can pick up the same mothership-err-radio station. Are they playing any Aerosmith??? hehehe
~joan

I live here in Southern Maryland and it's hard to get radio on the radio!!!

I vote for "embedded subliminal recordings from the PAP manufacturer". Are you sure they were not saying, but more masks, buy more masks? Apparently mine is as I have this unsatiable appetite to buy and try ever mask ever produced!

Joel...... Nasal Aire II Test Drive..... PM me....

LOL,
Babs

elader wrote: No really, I swear. In the middle of the night. It sure seemed that way. I thought it was on somewhere in the house but it wasn't. It must be my metal fillings.

I believe you. But I have a different theory.

I suspect that the frequency distribution of noise from the Respironics M-Series is such that it can be interpreted as coherent intelligible sound: music or speech. I have experienced this phenomenon on many nights, particularly early in my use of the Respironics machine. Once I identified the origin, my brain ceased attempting to interpret the noise as meaningful.

This has never happened to me while using my ResMed Auto machine.

I lack equipment to measure and distinguish the noise frequency patterns for the two machines, so I cannot objectively document differences between them. I would be interested in follow-up posts by anyone who has experienced this auditory effect, and particularly comment on what machine they are using.

Regards, Velbor

edit: see also viewtopic.php?f=1&t=40885&p=358163&hili ... io#p358163 and related links.

I just had a hearing test as part of my physical, and (believe it or nor at almost 59),my hearing is better than normal- and I have never heard anything from my Respironics APAP other than a nominal "whoosh" the first couple of times, now I don't even notice that- guess the little green men could sneak right up on me....uh-oh! Quiet, are they???
Oh, and for whoever asked, yes, there IS medical MJ in Maryland...not that I have indulged- asthma and even inhaling second-hand at concerts keeps me well away from the stuff. But, hey. if it is your thing- good luck!
~joan

Speaking as a broadcast engineer, AM radio does occasionally do some interesting things.

Around the phasing cabinet (contains big RF networks made of giant coils and capacitors) and the tuning units located at the base of the towers (more giant coils and capacitors), you can definitely hear the programming. The magnetic fields around the coils, which are varied at an audio rate by the programming, make the coils move around slightly and give off audio.

Things like fences often pick up the signal, especially single strands of rusty barbed wire. The wire acts as an antenna, and the rust forms a kind of 'diode' that 'detects' the signal. You need to be fairly close to the station to notice this effect, though.

The fields around the base of AM broadcast towers will also easily light a fluorescent lamp. Don't try this though, as the tower itself is usually 'live' with an RF voltage measured in kilovolts (in AM, the tower itself is the antenna).

Complaints of AM RF getting into phones, messing with TV picture, etc. are very common. A lot of it happens because people choose to build too close to the station. You don't hear about fillings, etc. very often because this kind of interference is rare.

FM causes far fewer problems, but when it does, they are often 'mysterious' pro. Analog TV would sometimes cause a harsh buzz in speakers, telephones, etc. Digital TV is more like FM.

I will once in a while seem to hear voices buried in the noise of my CPAP machine. Did a little bit a few nights back when I slept outside with it. Doesn't take an experienced ear very long to figure it out, and then ignore it.

elader wrote:

No really, I swear. In the middle of the night. It sure seemed that way. I thought it was on somewhere in the house but it wasn't.

It must be my metal fillings.

A word of advice. DON'T EVER LET YOUR DME KNOW ABOUT THIS. They'll try to charge you extra for the feature!

Thanks for posting this question - good to know I'm not alone. I've woke up in the morning hearing music, sports broadcasts and, this morning, it was a news broadcast. At first I thought my neighbor was blasting his stereo, but that didn't make sense. This morning when the news broadcast was going on I put my ear next to my clock radio thinking maybe it had a short or something - nothing. I turned off my cpap to hear better and immediately the broadcast stopped. Turned the cpap back on and the broadcast resumed. My wife thought I was nuts when I told her about this, and I thought about the fillings thing too. This has been going on for months, good to know what's causing it.