In Reply to: OK? That worked!!!! posted by Geary Lyons on November 11, 2013 at 19:48:36:
Whoa, dude! That's great.
Is your measurement gated, or not? If not, the HF roll-off is to be expected, because of the room's contribution, and some of those irregularities can also be room contributions.
If you want to do 1 meter measurements, that's fine, but be aware that you will get noticeably different graphs when you move the microphone up or down even just an inch.
I would suggest that you take that puppy outdoors to a reasonably large open area (a large yard, or a parking lot), and run a bunch of measurements at various distances and vertical mic positions. Also, if you can acquire the software to do gated measurements, that would be very useful. Taking it a step further, do a bunch (8-10) of gated measurements, and compute an average curve from all of them. And, as long as you're outside, I would also encourage you to take off-axis measurements. Heck, if you plan it well, you could take an entire day and maybe fire up a grill and make some baby back ribs while you and your friends do measurements and chat up hot girls who are just there for the beer and margaritas (yeah, that's what you should do!).
The cosmetics are looking excellent, too.
Lastly, make an attempt to normalize the frequency response at some frequency, such as 1000 Hz, for various measurements. That will make it much easier to quickly see differences. For example, in the comparison chart you provided above, adjust them so that 1 KHz is the same for both graphs. This way, even if you offset them by some amount for clarity, you have a reference point from which to assess differences.
Carry on!!!
:)
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Follow Ups
- RE: OK? That worked!!!! - Inmate51 11/12/1309:02:44 11/12/13 (4)
- RE: OK? That worked!!!! - Geary Lyons 18:59:37 11/12/13 (3)
- RE: OK? That worked!!!! - Inmate51 20:44:30 11/12/13 (2)
- RE: OK? That worked!!!! - Geary Lyons 21:40:48 11/12/13 (1)
- Getting Ready to Dive Back In! - Geary Lyons 23:49:55 01/2/14 (0)