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spl meter

 
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deonvds



Joined: 08 Sep 2003
Posts: 6

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spl meter
PostPosted: Thu Sep 23, 2004 1:37 am     Reply with quote
Can anybody help me with a circuit diagram and code for a sound pressure level meter (spl meter).
Trampas



Joined: 04 Sep 2004
Posts: 89
Location: NC

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PostPosted: Thu Sep 23, 2004 5:44 am     Reply with quote
No very hard...

Sample audio square it, then sum up. Take the sum and do a log and then finally multiply by 10.

Note that you will need to do some additional work, like filtering for C-weighting and also determining what is the best sample width.

Contact me off line if you need additional help:
trampas _at_ gmail.com

Trampas
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