Physics experiment help!

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clueless_experimentalist

Member
Joined 2023
Hey y'all,
I'd to conduct an experiment using a high level of SPL (140+dB!!!!) with a variable low-frequency sound source.
My initial idea was just to run a bunch of power through a number of speakers, like a car audio subwoofer, but it sorta dawned on me that I only need a high SPL in a volume with a height of maybe a few cm and a diameter not much bigger. Would a simple transducer and a horn, within an enclosure suffice? I imagine there has to be a way to transfer high SPL to a local area because headphones and earbuds work, but outside of the SPL drop-off equation, I haven't found any good sources of info on how to design something for a small area of interest.

I'm going to need to test the SPL and was looking at sound level meters to test for high dB in excess of 130dB and they are pricey. I see some subwoofer testing ADC device that goes for 300, but I worry that their measurement area isn't precise from one area of interest to another. Any advice on how to actually measure SPL from cms to cms?
Some ideas were to just measure pressure and convert that into SPL?

Thanks for taking the time and I'm looking forward to learning more about audio device construction!
 
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