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How accurate are iPhone db meter apps?
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The Beatsmith
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18th September 2010
Old 18th September 2010
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How accurate are iPhone db meter apps?

Hi

i have the app called 'Decibel' for my iPhone 4. How accurate are these things?

Is it worth getting a real db meter for rough readings?

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25th September 2010
Old 25th September 2010
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They're all useful tools but limited by the SPL handling of the mic. The built in mic starts to become compromised at only 100 dB so above that you'll want to use something more purpose built. I haven't used Decibel specifically but all of the Studio Six Digital stuff I've used has been, again within the built in mics limitations, stupid accurate.
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The Beatsmith
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25th September 2010
Old 25th September 2010
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for me it's more to do with making sure i'm monitoring at 85db or so, so that i don't get fatigued or problems with my ears on long sessions!

and also perhaps going outside and seeing how much sound might be leaking etc.

if it's over 100db then i'm already in trouble ;-)

hopefully it's accurate enough... doesn't the mic have a HPF on it though?
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25th September 2010
Old 25th September 2010
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Quote:
Originally Posted by The Beatsmith View Post
for me it's more to do with making sure i'm monitoring at 85db or so, so that i don't get fatigued or problems with my ears on long sessions!

and also perhaps going outside and seeing how much sound might be leaking etc.

if it's over 100db then i'm already in trouble ;-)

hopefully it's accurate enough... doesn't the mic have a HPF on it though?
A thought occurred to me , I'd bet if you recorded something with your IPhone , you would hear problems and things amiss , those missing things might be a guide to it being unacceptable .
Got to say this is all cr@p from the top of my head , don't even own an IPhone .
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27th September 2010
Old 27th September 2010
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Quote:
Originally Posted by The Beatsmith View Post
hopefully it's accurate enough... doesn't the mic have a HPF on it though?
Here's an article showing tested response of the iOS devices' built in mics-

iPhone 4 Audio and Frequency Response Limitations « Faber Acoustical Blog

So as long as your room doesn't have any massive 5+ dB spikes below 150, I'd say you're fine using it as a quick and dirty mix level reference.
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29th September 2010
Old 29th September 2010
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The Beatsmith
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1st October 2010
Old 1st October 2010
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yeah, good call. but i'm always carrying my iphone, and sometimes it's useful to know when my ears are being tortured a bit when i'm out and about...!
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