REW Beta Release REW API beta releases

[achugh]

You are measuring a subwoofer full range and REW detects very low output beyond 250Hz relative to noise floor and pops a warning. You can ignore it for subs or measure them with a limited frequency range.

Thank you for confirming my suspicion. I used to work with limited range but after watching your Youtube channel, I started doing full range for subwoofer sweeps. Since REW already knows that this is a subwoofer sweep as the channel selected is LFE, it will be great if REW applies some smart logic to check for distortion via some preference where one can provide the LFE range for distortion check to avoid this dialog box from showing up unless there is really a distortion to worry about. For now, I will continue to ignore this message for full range subwoofer sweeps.

This distortion graph is showing FUNDAMENTAL line plot as a straight line at 100 mark. In some other threads here I have seen this line to be drawn like other harmonic lines. I do not know if this is something I need to worry about or it is also because of the full sweeps on the LFE channel that I need to ignore. Does anyone knows why this 1st harmonic (Fundamental) line is a straight line at 100 value?

 

[John Mulcahy]

Does anyone knows why this 1st harmonic (Fundamental) line is a straight line at 100 value?

Because you are plotting the results as a percentage of the fundamental. If you change the Y axis type to SPL, for example, you can see absolute rather than relative levels.

 

[John Mulcahy]

Builds updated today (beta 60) with these changes:

• Added: API /alignment-tool/remove-delay endpoint to control the option to remove time delay
• Changed: Thiele-Small parameters "Write parameters to file" includes simplified model parameters
• Changed: Cross corr align improved for measurements with strong reflections
• Fixed: The alignment tool option to remove delay from the first measurement could be applied after using the alignment tool via the API
• Fixed: On the Impulse graph dragging the time axis during Offset t=0 was not working
• Fixed: STI panel was using internal test data