171–180 of 301 posts
These sounds are familiar to me from using “ pink trombone”, or praat, both vocal synthesizer. I would guess that a text - to - speech system is bugging out. https://dood.al/pinktrombone/
You don't need physical access to interfere with an analog audio system. (Remember old cellphones?) Since they're saying it's an issue with the amplifier, I'm assuming someone found a weak spot that readily gets picked up by the system's input.
Is it really analog though? The audio might be analog, but they still have to "key" the mic which would be a digital input at the very least, or something even more complex such as a phone-like system where handsets have actual keypads and internal numbers. I wouldn't expect the amplifier to be active at all unless a "call" is in progress (otherwise you might hear a constant noise, plus energy saving/thermal concerns…
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My best guess its an unfunny "Easter Egg" that triggers after something like 5,000 hours of uptime. I think I remember some bug in Boeing or some other system that they need to actually be rebooted every 100 days.
I'm one of those people who thinks easter eggs are great, and miss the days when you had a decent chance of coming across one in a program or game. The FAA does not agree with that. The FAA probably thinks that easter eggs in avionics software are a crime. And I agree with that position! Aviation, medical, military, and any other critical software should not contain easter eggs, and it should be an offense to knowing…
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Not on purpose, but there are YouTube videos of pilots accidentally doing in flight announcements on guard. Maybe there's some plane error that is sometimes causing the error the other way around.
I know Unites Airlines used to make its pilot’s atc communications available on “channel 11”, but I think that all stopped post 9/11.
Earlier quoted context omitted.
I'm one of those people who thinks easter eggs are great, and miss the days when you had a decent chance of coming across one in a program or game. The FAA does not agree with that. The FAA probably thinks that easter eggs in avionics software are a crime. And I agree with that position! Aviation, medical, military, and any other critical software should not contain easter eggs, and it should be an offense to knowing…
> critical software should not contain easter eggs So boring! I look forward to my pacemaker giving me palpitations to the rhythm of "Never Gonna Give You Up".
These sounds are familiar to me from using “ pink trombone”, or praat, both vocal synthesizer. I would guess that a text - to - speech system is bugging out. https://dood.al/pinktrombone/
That is fascinating, but the sounds on the plane a more natural to my ears. Voice recordings for sure. Either way I'd hate to hear that on a flight.
For those interested in the various aircraft systems for PA (public address) and aircraft status system for aircrew, I found this interesting training doc PDF online [1] for the A320/321. I have been looking at section "03-010 CABIN INTERCOMMUNICATION DATA SYSTEM" It does not mention the "medical intercom jacks" in overhead bins that are mentioned at the end of the article [1]: https://caisatech.net/uploads/XXI_3_AIR…
I'm struggling to understand how this would explain the account here: >Then the master power button up at 1L for the cabin power kept getting I pushed so it would shut off all the IFE, seat power and outlets. I had to push the button on again about 3 times inflight. Then the 2 got a call with the same groaning noise and thought it was one of us playing a joke but it wasn't us. >It certainly was freaking all of us and…
Only time will tell, but I'm almost certain I'm right on this one.
For those interested in the various aircraft systems for PA (public address) and aircraft status system for aircrew, I found this interesting training doc PDF online [1] for the A320/321. I have been looking at section "03-010 CABIN INTERCOMMUNICATION DATA SYSTEM" It does not mention the "medical intercom jacks" in overhead bins that are mentioned at the end of the article [1]: https://caisatech.net/uploads/XXI_3_AIR…
Apparently there is a compact flash card to play music and the pre-recorded announcement over the loud speakers. I wonder if someone replaced the standard announcement with a 5 hour long file with intermittent burps and groans....