ProSoundWeb Community

Please login or register.

Login with username, password and session length
Advanced search  

Pages: [1]   Go Down

Author Topic: ECFs'. To use or not to use, that is my question.  (Read 292 times)

Carl Fischer

  • Newbie
  • *
  • Offline Offline
  • Posts: 2
ECFs'. To use or not to use, that is my question.
« on: December 11, 2019, 04:51:36 pm »

I'm sure this has been discussed before, but I'll ask for some opinions again regardless.

I'll shortly be testing this soon with my earthworks M23. Capturing a response with and without the ECF inserted.

I recently setup a Sound System for Howard Page and while I had him close to me I asked him as many questions as I could.

One question I asked was if he used a calibration file for his RTA mic and he said "no, never."

So I ask:

1) What is a calibration file?

2) If you have a relatively flat response on you RTA mic, does the file matter?
Logged

Nathan Riddle

  • Hero Member
  • *****
  • Offline Offline
  • Posts: 1798
  • Niceville, FL
    • Nailed Productions
Re: ECFs'. To use or not to use, that is my question.
« Reply #1 on: December 12, 2019, 11:57:15 am »

I'm sure this has been discussed before, but I'll ask for some opinions again regardless.

I'll shortly be testing this soon with my earthworks M23. Capturing a response with and without the ECF inserted.

I recently setup a Sound System for Howard Page and while I had him close to me I asked him as many questions as I could.

One question I asked was if he used a calibration file for his RTA mic and he said "no, never."

So I ask:

1) What is a calibration file?

2) If you have a relatively flat response on you RTA mic, does the file matter?

1) it looks like the below. Its a factory created file so the mic reads 'true' compared to 1kHz

Quote
;www.isemcon.com      freefield
;sensitivity   7.05   mV/Pa @ 1kHz
10   -1.25   
11.2   -0.89   
12.5   -0.76   
14   -0.57   
16   -0.41   
18   -0.3   
20   -0.19   
22.4   -0.11   
25   -0.05   
28   0   
31.5   0.06   
35.5   0.09   
40   0.12   
45   0.15   
50   0.17   
56   0.18   
63   0.19   
71   0.2   
80   0.21   
90   0.21   
100   0.21   
112   0.21   
125   0.21   
140   0.21   
160   0.21   
180   0.2   
200   0.2   
224   0.19   
250   0.18   
280   0.18   
315   0.17   
355   0.16   
400   0.15   
450   0.13   
500   0.12   
560   0.11   
630   0.09   
710   0.07   
800   0.05   
900   0.03   
1000   0   
1120   -0.02   
1250   -0.09   
1400   -0.07   
1600   -0.13   
1800   -0.15   
2000   -0.17   
2240   -0.18   
2500   -0.23   
2800   -0.28   
3150   -0.28   
3550   -0.23   
4000   -0.3   
4500   -0.5   
5000   -0.53   
5600   -0.35   
6300   -0.3   
7100   -0.13   
8000   -0.12   
9000   -0.01   
10000   0.09   
11200   0.32   
12500   0.59   
14000   0.59   
16000   0.27   
18000   -0.06   
20000   -0.24

2)
No, definitely not RTA, DualFFT sure.

Note the most difference is @ 10Hz ~1dB. Not enough to be a big deal IMO.

---

I use a calibration file because it's easy to put in SMAART and keep there and use when I'm using my EMX-7150 mic.

I don't bother with a calibration file the ECM8000 Behringer mics as those are mostly used for general tunings & main/sub alignments.
occasionally I'll compare to my EMX-7150 and they are within 3dB and that's okay for field measurements IMO.
Logged
I'm just a guy trying to do the next right thing.

This business is for people with too much energy for desk jobs and too much brain for labor jobs. - Scott Helmke

ProSoundWeb Community

Re: ECFs'. To use or not to use, that is my question.
« Reply #1 on: December 12, 2019, 11:57:15 am »


Pages: [1]   Go Up
 



Page created in 0.062 seconds with 22 queries.