Small Audio Room Measurements

Subvet

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This is my first attempt at really using this great product. I have a very small audio room that has a desk with monitors at the back. It has GiK Tri-Traps full height front and top half in back, 244 bass traps at first reflection. I've learned that very little seems to affect the frequency response. I've removed all the treatments, as well as moved the mike (and the chair) forward, back, left and right. The response seem to be somewhat close to what the room simulation says it would be. So maybe that means I'm doing the measurements correctly. I have a UMM-6 USB mike, sound is going from a laptop through a DAC into the audio system (as listed in profile).

I don't really have any complaint on the sound, but it's always worth seeing if it can be bettered. I'm hoping someone can confirm my measurements make sense given the room, and I'd like to hear any advise anyone cares to offer. Remember it's a very small room (13'10" x 9' 7'2" ceiling) with treatments, Ikea record cubes, audio equipment, etc.

Thanks,
Ed

Room Front Photobucket Link
Room Rear Photobucket Link

Most of my measurement look very similar to this image (Measurements.mdat is attached):
SPL Capture.jpg


Here's the Room Sim:
RoomSim800.jpg
 

Attachments

  • Measurements.mdat
    27.5 MB · Views: 50

Wayne A. Pflughaupt

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Treatments have little effect on frequency response. They are for reducing reflections for a more “dead” room. The exception can be bass traps. If there are enough of them, they can smooth out peaks and (especially) nulls. But typically it requires more traps than most people want to see in a room.

Regards,
Wayne
 

Subvet

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Joined
Mar 20, 2019
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Location
Southern Maine
I do understand now that treatments have little effect on frequency response. I'm hoping someone will take a look at the information and confirm the measurements appear to be done correctly (my first use of the software), perhaps check the Topt, T30 numbers, waterfall and maybe give pointers on what can be done with positioning, etc.

These new measurements are interesting to me in the difference in the left / right response. The room is different, especially just to the right of the right speaker where there is a closet (see room link in first post). I'm wondering if that explains the difference.

This graph is the left and right frequency response with 1/12 smoothing.

LeftRight.jpg
 

Attachments

  • Mar 29 Measurements.mdat
    12.9 MB · Views: 1
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