posted
I'm a bit confused about this> Often i hear people use the word "subsonic". Usually what they mean is a really low frequency. But who ever gave it the name subsonic? If you ask me- "sub" meaning-slower than, and "sonic" meaning sound, basically what the word means is: slower than sound; or slower than the speed of sound. Which has nothing to do with low frequencies. Have you ever herd someone say- "My tweeter can play supersonic notes"? You mean notes that move faster than the speed of sound? Huh????? wHaT??? Like mach 2?
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Posts: 140 | From: TEAM HERTZ C A N A D A | Registered: Oct 1999
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A sub-sonic frequency is under sonic (sound) and a super-sonic is OVER sonic (sound) frequencies, but all frequencies travel at basically the same velocity.
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Posts: 2578 | From: Somewhere In the Northeast | Registered: May 1999
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posted
I agree with the weirdness on naming. With my aerospace engineering background, subsonic and supersonic have two different meanings than that of acoustics. I believe the proper terms are infrasonic and ultrasonic.
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But to interperet subsonic in the car audio context (e.g. Subsonic crossover instead of infrasonic crossover... Even though the latter is probably "more" correct) I simply use sub as "under" instead of "slower", although this doesn't represent the correct terminology.
But again, what you said is very correct :-)
ShadowStar
------------------ Computers are a lot like air conditioners.. Open Windows and they become useless..
The day Microsoft makes something that doesn't suck is the day they make vacuums.
Posts: 2578 | From: Somewhere In the Northeast | Registered: May 1999
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posted
Even though it is incorrect, subsonic seems to have developed into the "normal" term for below audible. Probably brought on by the word subwoofer. Guess those few weirdos like me that have an engineering background can just get used to subsonic not necessarily meaning below 0.8 Mach.
Oh and by the way, I am working on a supersonic subwoofer enclosure, and I don't mean a high note. Wonder what SPL is a sonic boom.
------------------ Team I NEED CASH!
45 cu ft of interior 15 cu ft of box
Stock 1-2 (or maybe even 3-4)
If money did grow on trees, I would move to a forest.
[This message has been edited by Shedluv (edited 11-15-99).]
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