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Full resolution(1,282 × 290 pixels, file size: 135 KB, MIME type: image/png)

FFT analysis of the sound made by the sonic barrier from Par Avion. Made by me using freqtweak. Scale is natural log based, from zero to 24KHz. The frequency bands seen, from left to right: 93-99 Hz 134-140 Hz 181-187 Hz 240-246 Hz (Pulse) 275-281 Hz (Pulse) 322-328 Hz 369-386 Hz 416-421 Hz 462-468 Hz 556-562 Hz 703-708 Hz 744-750 Hz (Pulses) 837-843 Hz (Pulses) 972-978 Hz (Pulses) 1066-1072 Hz (Pulses) 1300-1406 Hz (Pulses) 1599-1605 Hz As the higher-pitched sound is heard, it seems to be a high frequency sweep between 6KHz and 8KHz, trailing off. According to the NIMH web site, the human skull resonates at frequencies between 828Hz and 1417Hz.

Note however that this is simply a special audio effect, and at any rate would be limited to the frequency range used for television broadcast transmissions, which neglects much of the ranges typically used for sonar, above the range of human hearing.

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Date/TimeThumbnailDimensionsUserComment
current06:02, March 15, 2007Thumbnail for version as of 06:02, March 15, 20071,282 × 290 (135 KB)LOST-Evilwombat (Talk | contribs)FFT analysis of the sound made by the sonic barrier from Par Avion. Made by me using freqtweak. Scale is natural log based, from zero to 24KHz. The frequency bands seen, from left to right: 93-99 Hz 134-140 Hz 181-187 Hz 240-246 Hz (Pulse) 275-281 Hz (Pul

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