REW Spectrum scaling feature request.

[BVa]

It is not possible to add to spectrum scaling menu "dBr" , relative to highest amplitude? It will be very valuable feature. Thanks.

 

[John Mulcahy]

A great many things are possible

Can you explain in more detail what you would like to see happen and on which graph(s)? The more detail you provide, the better.

 

[BVa]

Thank You for reply.. As I wrote, it will be great to have in spectra graph scaling also in dBr (relative to fundamental), so that fundamental is always shifted to 0dB(r), harmonics and the and whole "background" shifted the same value as fundamental frequency.
E.g in attached spectra graph add to "everything" ofset +17dB and scale change to dBr. Normalize graph to fundamental

 

[John Mulcahy]

OK, I'll add that to the feature request list.

 

[John Mulcahy]

As an aside, you can work around it for a particular input level by running SPL calibration using the 'external signal' option and telling REW the input level is 0.

 

[BVa]

Sure, it's possible, but very unpractical to do it again for each different level. Maybe option "ofset", to do it manually after measurement.
Thanks in advance.

 

[John Mulcahy]

I have added a "dBc" axis option for 5.19 beta 10 which provides this feature.