The forum discussion centers around an unusual alarm signal experienced by Duncan, who reported hearing a continuous beep from various electronic devices in his home at midnight. Participants suggested potential sources for the sound, including a digital alarm clock that may have reset due to a power outage, and emphasized the difficulty of locating high-frequency sounds. The Greenwich Time Signal was mentioned as a possible synchronizing signal, but the consensus leaned towards the likelihood of a hidden digital device or prank. The discussion concluded with recommendations for using a stethoscope to pinpoint the sound's source.
PREREQUISITESThis discussion is beneficial for homeowners experiencing unexplained electronic sounds, electronics enthusiasts, and anyone interested in sound localization techniques.
russ_watters said:
The guy in the video seems to be an audio engineer who has lots of mics laying around. I was looking for a practical solution that the OP could apply.jedishrfu said:I think the video would be too long if he used one mic at a time with a cone. :-)
A.T. said:That's great, but uses a lot of equipment.
I wonder if one could use some simple listening cone and point it in different directions, to estimate the source direction based on the volume changes.
I tried and you can get to the right room (or maybe better) with a cell phone and a sound level app...if it is in a room. If it is in an above/below crawl space it may be more difficult to localize.jedishrfu said:He said in the video he went to the store to get these mikes.
You could probably do the same thing with two mikes and narrow things down in a binary search sort of scheme.