The J-box is a device that I’ve often looked at on AliExpress, but I don’t see much or any talk about it really on DIY forums, not English speaking ones anyway. It looked quite interesting to me as an all-in-one measurement system; the poor man’s alternative to...
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J-Box III Review
The J-Box III Review
The J-box is a device that I’ve often looked at on AliExpress, but I don’t see much or any talk about it really on DIY forums, not English speaking ones anyway. It looked quite interesting to me as an all-in-one measurement system; the poor man’s alternative to...Last edited by Reet; 18 May 2025, 13:02 Sunday. -
Ultrasonic Tweeter Filters - for peace of mind only?
Over the years, and recently I've observed several occasions where designers are targeting the ultrasonic breakup mode of a hard dome tweeter with a notch filter. In each case I have not observed any objective measurements that show a noticeable improvement to the tweeter's performance at audible frequencies,...
Last edited by Reet; 16 February 2025, 11:04 Sunday. -
FSAF measurement via REW - listen to the distortion!
REW 5.40 beta includes a new measurement technique called FSAF, or Fast Subband Adaptive Filtering process developed by Michael Tsiroulnikov. Read more about it here:
https://www.roomeqwizard.com/betahel...asurement.html
What FSAF does is allow one to produce...Last edited by Reet; 24 December 2024, 15:01 Tuesday. -
How to: Measure with REW for Room EQ
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Created by:
Reet
How to: Measure with REW for Room EQ
REW is a powerful tool, as is EQ, but getting it right can be challenging. The first step to achieving a good EQ profile for your space is to take in-room measurements. This document will detail an easy method to achieve quick and reliable results.
For room EQ, a single measurement at your listening location will not produce a good depiction of the overall room response. An average of many measurements around the listening area should be completed to create a room response for equalization...Last edited by Reet; 16 April 2023, 13:04 Sunday. -
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How To: Export Impulse Response from REW for use in VituixCAD (prior to 2.0.98.6)
Update: Since VituixCAD 2.0.98.6, exporting IR using windowing as described here is no longer required. the impulse response can be exported directly, make sure to uncheck "normalize" on export. VituixCAD will automatically set "skip samples" to 1m (2.907ms) prior to the start time of the exported impulse response to maintain correct timing on import.
REW can export the measured impulse response directly as MLSSA formatted text file, which can be used within the...Last edited by Reet; 14 January 2023, 16:06 Saturday.