(YouTube Link)
Roger Menees of Anna, Illinois has set a new world record for the lowest sound ever sung by a human:
Mr Menees, a coach driver for gospel and rock musicians, managed the feat on Feb 11 at his Carbondale recording studio. He hit 0.393 hertz - a very low F-sharp. The previous record was 0.797 hertz.
But Mr Menees says he could have done better and will probably make another attempt if his new record is bested anytime soon.
Link | Image: Alamy
On a more serious note, as a long-time electronic musician/producer the mics and technology here are pretty weird. I assume the mic is an SM58, a pretty standard vocal mic for singers. Its sensitivity drops off massively below about 150hz at 40hz it is ten times less sensitive. At 0.3 hz ... it frankly doesn't go there.
To do that you would need a very large diaphragm microphone, in fact, when recording the fundamental frequency of bass drums audio engineers often use loudspeakers wired up (in reverse) as a microphone, because the low frequency is of such a long wavelength that a very large surface is required to capture it.
Its a whole different matter to 'croaky voice' a click twice a second and have a chest which acts as a resonant body for that. I have to say : that's not really a fundamental sine wave of 0.3 hz, it is an impulse every 0.3 seconds.
Different thing
Sorry, I know only geeks will read that. But it bugged me.
And can't humans only detect frequencies as low as 20Hz? If it were a fundamental frequency, my guess is at frequencies that low we wouldn't even be able to hear it, however if like angstrom said, it were merely an impulse at such intervals, we might still be able to detect it, as we could in the video.
http://www.youtube.com/watch?v=7pT7OZE66Q0
I posted it on my blog long ago. http://gritinthegears.blogspot.com/2007/02/love-will-tear-us-apart-again-by-yat.html
From wikipedia: "Specifically in humans, we have a maximum aural range of 12 Hz under ideal laboratory conditions to 20,000 Hz in some individuals..."
http://en.wikipedia.org/wiki/Human_hearing_range#Humans
Going below 10-12Hz puts you in the INFRASONIC range, where sound is felt, not heard.
http://www.youtube.com/watch?v=etdMM6VsBos