Avatar
Please consider registering
Guest
Search
Forum Scope


Match



Forum Options



Minimum search word length is 3 characters - maximum search word length is 84 characters
Register Lost password?
sp_Feed sp_TopicIcon
question about evaluating noise floor
Avatar
Acoustics Pro
Members
Forum Posts: 22
Member Since:
February 15, 2017
sp_UserOfflineSmall Offline
1
March 7, 2018 - 7:38 pm
sp_Permalink sp_Print

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

Avatar
Acoustics Pro
Members
Forum Posts: 22
Member Since:
February 15, 2017
sp_UserOfflineSmall Offline
2
March 7, 2018 - 9:16 pm
sp_Permalink sp_Print

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.

Avatar
Chief Acoustics Engineer
Forum Posts: 389
Member Since:
August 12, 2013
sp_UserOfflineSmall Offline
3
March 8, 2018 - 6:48 am
sp_Permalink sp_Print

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

Avatar
Acoustics Pro
Members
Forum Posts: 22
Member Since:
February 15, 2017
sp_UserOfflineSmall Offline
4
March 10, 2018 - 9:55 am
sp_Permalink sp_Print

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.

Forum Timezone: America/Los_Angeles
Most Users Ever Online: 31
Currently Online:
Guest(s) 3
Currently Browsing this Page:
1 Guest(s)
Forum Stats:
Groups: 4
Forums: 10
Topics: 376
Posts: 1024

 

Member Stats:
Guest Posters: 23
Members: 14817
Moderators: 0
Admins: 2
Administrators: admin, Dennis Foley