Hi,
Here's something to listen to:
http://flstudio.image-line.com/help/publicfiles_gol/GhostTone.wav
It's divided in 2 parts, the same bunch of sine harmonics in the upper
range, only difference is the phase alignment. (both will appear similar
through a spectrogram)
Disregarding the difference in sound in the upper range,
1. anyone confirms the very low tone is very audible in the first half?
2. (anyone confirms it's not speaker distortion?)
3. anyone knows about litterature about the phenomenon?
While I can understand where the "ghost tone" is from, I don't understand
why it's audible. I happen to have hyperacusis & can't stand the low traffic
rumbling here around, and I was wondering why mics weren't picking it, as I
perceive it very loud. I hadn't been able to resynthesize a tone as nasty
until now, mainly because I was trying low tones alone, and I can't hear
simple sines under 20Hz.
The question is why do we(?) hear it, why is so much "pressure" noticable
(can anyone stand it through headphones? I find the pressure effect very
disturbing).
Strangely enough, I find the tone a lot more audible when (through
headphones) it goes to both hears, not if it's only left or right.
--
dupswapdrop -- the music-dsp mailing list and website:
subscription info, FAQ, source code archive, list archive, book reviews, dsp
links
http://music.columbia.edu/cmc/music-dsp
http://music.columbia.edu/mailman/listinfo/music-dsp