Found a cool app for all you sound and acoustic heads, it's called sound calculator pro and takes out all the guess work when treating your room.
 
For instance the lowest note my room can handle is 48.7Hz.
 
Just punched the room dimesions into the calculator and whamo
 
Neb

Where is the cool app? No use posting a statement like this with a link. You don't need an app either to work this out. Very simple formula. I would have thought they may have given you that info when you were doing your masters or did they?

Actually that is one area the JMC Academy is very strong. They deliver a very good module on acoustics. Even more important than that frequeuency is the frequency where sound stops moving in waves and starts bouncing like light. The is the 'critical' frequency. Much harder to calculate though. The bottom end is harder to control in smaller rooms because the critical freq moves up higher. In larger ooms it moves way down low.

The simple ones really only work for rectilinear spaces, right? And even then, depending on what's going on in your space, they might not be totally accurate, but a good start. Ultimately measurement is the only real answer. Get a measurement mic and test tones, and start measuring.  That way you don't have to guess, you know.

Jeff Evans


Where is the cool app? No use posting a statement like this with a link. You don't need an app either to work this out. Very simple formula. I would have thought they may have given you that info when you were doing your masters or did they?

Actually that is one area the JMC Academy is very strong. They deliver a very good module on acoustics. Even more important than that frequeuency is the frequency where sound stops moving in waves and starts bouncing like light. The is the 'critical' frequency. Much harder to calculate though. The bottom end is harder to control in smaller rooms because the critical freq moves up higher. In larger ooms it moves way down low.

Actually Jeff I know the formula, I tested the formula before trying to see if the app worked.  Yes JMC did teach a very good Sound and Acoustics course until Mark Basset wanted to fail a whole class because of not referenceing properly.
 
Lets just say that he is noe the ex cordinator of audio at JMC but he now has a cushy job at SAE.
 
As for a link I can't find one because it's for your Crapple **** just go to the Apple app store and punch in Sound Calculator Pro and Bingo 3 bucks buy's all the sound and acoustic maths formula's.
 
I now know I have a problem below 48.7hz and now will try and build a bass trap to fix this problem.
 
Its sounds like your a bit narky for this suggestion and even a bit narky with me!!!
 
Neb

Dean has a good point though. You can do all the calculations under the sun but ultimately you have to listen. And a good starting point would be pink noise and doing some RTA analysis with a reaonable measurement mic. And then onto some music. That is good test!

ARC it.