TOPIC:

Thanks for the quick answer -- perfect sense. And my apologies for hi-jacking the Fuzzmeasure thread (I realized I posted my question in the wrong thread, right after posting).

Raising my gain from 12dB to 18db alleviated my low sensitivity problems with REW. Perhaps it is MacBookPro model-specific.

Thanks again.

Steve Z

Are there any pictures available for this procedure?

I am having a problems too and hope the support team can help me. I am using UMIK-1 with REW 5.01 Beta 24 on a MacBook Pro OSX 10.9.5.

My UMIK-1 appears in REW as "UMIK-1 Gain: 18dB" which I suppose is fine and I have downloaded the associated calibration files. I am using the 90-degrees version and have been trying to set the speaker levels (Level calibration).

In the sound settings in the preferences of OSX, you are able to set the UMIK-1 as the device for sound input. However, right below that, there is a slider to control gain for the input microphone. The default for the input gain on the slider is to leave the gain button exactly in the middle. I assume that means that I would get a 1:1 sound input ratio.

I don't have a dedicated high quality SPL meter to compare against REW and UMIK-1 to establish how accurate REW and UMIK-1 is but with the above settings and calibration file in place, am I seeing correct values in terms of SPL ?

@ Sam

If you're using REW, you just need to make sure under Preferences of REW that the tick box "Control Input mixer". When you do so, under REW, it will be correctly setup.
You said in both post that "you're having problems" but we're unfortunately not sure what these problems are.. Thanks for clarifying and please keeping one post. (i.e. else it's double work and hard to follow). This UMIK-1 + Fuzzmeasure post is out of topic with REW.

DevTeam

My microphone is unaltered, so I assume the setting is 18 dB. Correct? My sens factor is .22710 dB. Do I need to change that if I didn't change the DIP-switches in the microphone?

@ Pander,

A bit hard to understand your question here. Are you using Fuzzmeasure? (title and topic of this thread?)
What's the issue you're having?