Feature request: In overlays be able to display more than just one harmonic at a time

[bobkatz]

Hi, John. If this is not too difficult it would be nice if the overlay displaying distortion could display selective harmonics like we can in the main screen.

My purpose is I am doing some equipment (tube and transformer gear) analysis and I'd like to see the effect of different tube bias on both 3rd and 5th harmonic. I can switch back and forth between distortion measurement of different measurements the main screen showing whichever harmonics I like to see, but I cannot overlay them and in the overlay screen I can only display one harmonic at a time.

Not urgent but it would be great. Thanks.

 

[John Mulcahy]

That would be difficult because it would be hard to distinguish which trace came from which measurement. For Overlay graphs each trace is in the measurement's colour. Might be easier to use the RTA to view the distortion components live as bias is adjusted.

 

[bobkatz]

Thanks, John. Maybe I can photoshop combine the traces. As of now to compare one measurement with another I quickly switch between two measurements in the left hand column of the regular page. Perhaps I can open two instances of REW to see them both at once and compare.

 

[ddude003]

You could most likely upload screen shots of your two traces you want to combine to one of the many AIs... Prompt the AI to do the combine and even a comparison of the areas you are most interested in...

If you want to get real crazy you could use photoshop to remove the blue channel from one of the traces and remove the red channel from the other trace, then combine them and get out your Red/Blue 3D glasses...

P.S. If you know how to run R, I have a R script script that will do what you are looking for I can send you...