How to Measure Sound with a Handheld Meter -- Workbench Wednesdays 26

How to Measure Sound with a Handheld Meter

element14 Presents | Bald Engineer: James Lewis' VCP Profile | Workbench Wednesdays

One of the loudest pieces of equipment on Bald Engineer’s electronics workbench is the Electronic DC Load. James has finally had it with its noise and decided to swap the fan out. To see (and not just hear) an improvement, he uses a Tenma 72-94272-942 handheld sound meter to compare before and after.

Supplemental Content:

Bill of Material:

Product Name	Manufacturer	Quantity	Buy KitBuy Kit
Sound Meter 72-94272-942	Tenma	1	Buy NowBuy Now
DC electronic Load 8540	B&K Precision	1	Buy NowBuy Now

Top Comments

KalebTheMaker over 5 years ago

Great video James!

I remembered that A and B weighting were based on frequency ranges, but did not remember that both cap at 10kHz. Our hearing range is min/max 20Hz - 20kHz, and there sure is a lot of information between 10 and 20 kHz!

I think I have some tests of my own to run on my db meter (which is nowhere near as nice as that one).

-Kaleb
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jw0752 over 5 years ago

Reference your question on the A and C I checked with the manual that I have for a Radio Shack Sound Level Meter and this is their explanation for the A C Weighting choice.

John
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jw0752 over 5 years ago

Thanks for another useful presentation.
John
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