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Measuring A Rooms Lowest Usable Frequency
Measuring A Rooms Lowest Usable Frequency
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Old 15th October 2004, 02:04 PM   #1
OMNIFEX is offline OMNIFEX  Jamaica
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Question Measuring A Rooms Lowest Usable Frequency

Hi.

I'm just curious when measuring a rooms lowest acceptable
frequency, do you measure it by:

Speed Of Sound divided by Frequency divided by Half Wave?

OR

Speed Of Sound divided by Frequency divided by Quarterwave?


OR

Some other method?


Thanks.
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Old 15th October 2004, 02:42 PM   #2
richie00boy is offline richie00boy  United Kingdom
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Measuring A Rooms Lowest Usable Frequency
freq = speed of sound / longest dimension
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Old 15th October 2004, 02:55 PM   #3
BillFitzmaurice is offline BillFitzmaurice  United States
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There is no such thing as a room's 'lowest acceptable frequency', though there are of course resonant modes that will affect response in both a positive and negative fashion. If what you're referring to is the frequency below which cabin gain exists that would be at about a half-wavelength, which is speed of sound divided by longest dimension/2.
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Old 15th October 2004, 04:18 PM   #4
OMNIFEX is offline OMNIFEX  Jamaica
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Thanks Guys!

Resonant Modes..... Thats the word I was looking
for


Thanks Again!
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