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J
jesperlykke
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J
jesperlykke
replied to the thread
Measuring freq. response with a deep notch, cannot measure the correct depth.
.
I accept that, also that it's correct. So anything above my ADC's 0dbfs level (around 1.339v) will be shown as +dbfs I did know that...
Mar 19, 2023
J
jesperlykke
replied to the thread
Measuring freq. response with a deep notch, cannot measure the correct depth.
.
Hi... A ran some test, to try the two different calibration techniques out. All test is with Victors 998Hz oscillator @ 2.1V sine. The...
Mar 19, 2023
J
jesperlykke
replied to the thread
Measuring freq. response with a deep notch, cannot measure the correct depth.
.
This is really great... After some hour's with trial and error I finally got it right. (Notch is dual fliege OPA1662) This is the way...
Mar 16, 2023
J
jesperlykke
replied to the thread
Measuring freq. response with a deep notch, cannot measure the correct depth.
.
Yes... this is excatly how I use my passive notch ----> My other thread regarding passive notch This methoed is working as expected. I...
Mar 15, 2023
J
jesperlykke
replied to the thread
Measuring freq. response with a deep notch, cannot measure the correct depth.
.
Great... So you suggest me to try it out adjusted so that the TOP of the notch (away from the notch) is adjusted to 0 SPL instead? -...
Mar 15, 2023
J
jesperlykke
replied to the thread
Measuring freq. response with a deep notch, cannot measure the correct depth.
.
Hi here... As I said, proberly need to have some more cleared out. I created a "mic. calibration" / notch compensation file, as...
Mar 14, 2023
J
jesperlykke
replied to the thread
Measuring freq. response with a deep notch, cannot measure the correct depth.
.
So this is solved now :) Allway's help John, thanks... Tried to do a couple of 4M / 48kHz sweep's... Notch is >70dB deep I will...
Mar 9, 2023
J
jesperlykke
replied to the thread
Measuring freq. response with a deep notch, cannot measure the correct depth.
.
Will do for sure...
Mar 9, 2023
J
jesperlykke
replied to the thread
Measuring freq. response with a deep notch, cannot measure the correct depth.
.
Perfect.... Thank's John.
Mar 9, 2023
J
jesperlykke
reacted to
John Mulcahy's post
in the thread
Measuring freq. response with a deep notch, cannot measure the correct depth.
with
Like
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When making your cal file bear in mind the notch centre will have some drift with temperature.
Mar 9, 2023
J
jesperlykke
replied to the thread
Measuring freq. response with a deep notch, cannot measure the correct depth.
.
Is it the Decimate IR checkbox. Sry. I'am not knowing that much about that YET :T
Mar 9, 2023
J
jesperlykke
replied to the thread
Measuring freq. response with a deep notch, cannot measure the correct depth.
.
Okay... That's something I did not know. I will post back with my findings. Jesper.
Mar 9, 2023
J
jesperlykke
replied to the thread
Measuring freq. response with a deep notch, cannot measure the correct depth.
.
Hi trobbins. I did try to lower the span to 900Hz ---> 1100Hz, giving the same result. I tried to step through the notch with RTA / FFT...
Mar 9, 2023
J
jesperlykke
posted the thread
Measuring freq. response with a deep notch, cannot measure the correct depth.
in
Official REW (Room EQ Wizard) Support Forum
.
Hi here. I'am trying to measure an active 998Hz notch, where the notch deep is around -70dB (very sharp). If i'am measuring it with the...
Mar 9, 2023
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