I have been using REW for many years, including 'Room Correction' and speakers response corrections.
Was working just great, till few days ago:
The equalization calculation and filters construction was perfect. REW says 'predicted response should be flat'
I created the filters text file, and imported it to Equalizer APO as a set of filters to correct my PC sound in real time. (same as in the past)
BUT: when I tested it with the filters assigned, using REW test, I realized that the filters did over correction, and the response was a mirror image of the uncorrected. See figure bellow.
My 'Brutal' fix was to go back to the filters and manually cut by half their gain. For all of them.
And when using with the corrected filters, I got the perfect correction the REW predicted.
Any idea why this happens?
Figure: red line- before correction, Green line - after using proposed filters REW calculated for me, Blue line- after I manually cut the gain for all filters by half.
Was working just great, till few days ago:
The equalization calculation and filters construction was perfect. REW says 'predicted response should be flat'
I created the filters text file, and imported it to Equalizer APO as a set of filters to correct my PC sound in real time. (same as in the past)
BUT: when I tested it with the filters assigned, using REW test, I realized that the filters did over correction, and the response was a mirror image of the uncorrected. See figure bellow.
My 'Brutal' fix was to go back to the filters and manually cut by half their gain. For all of them.
And when using with the corrected filters, I got the perfect correction the REW predicted.
Any idea why this happens?
Figure: red line- before correction, Green line - after using proposed filters REW calculated for me, Blue line- after I manually cut the gain for all filters by half.
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