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question about evaluating noise floor

jasonlechak

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March 7, 2018 - 7:38 pm

Hi everyone.
Regarding noise floor: which is the appropriate unit of measure to determine the value:

Peak Amplitude

Average RMS Power

I do not have a reference microphone, so am using my condenser mic, with the audio interface gain set to a level which gives me voice over reads that peak around -12 dB.
With that configuration, I record 45 seconds or so of room tone, then look at the above values.

Thoughts?

Thanks!

Jason

jasonlechak

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March 7, 2018 - 9:16 pm

I suppose both numbers are useful measurement tools, as long as they are clarified as Peak Amplitude, or Average RMS Power, vs. just stating the number.

Dennis Foley

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March 8, 2018 - 6:48 am

J, Start with an RTA app.and use the “C” weight scale.

jasonlechak

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March 10, 2018 - 9:55 am

Thank you Dennis.
I downloaded one and have been using it, though the free version does not offer any scale options.
The ‘Pro’ version does not appear to offer that either, but I will have to ask the developer.