@MarkZ - thanks for the explanation and I don’t have to wander if I am missing something. Not a big deal in the grand scheme of things…
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Just wondering, what is this random unpopulated (and moveable) box all about when the program starts?
That’s the (very new) legend. When there’s no data it’s empty but as soon as you run a test it will fill in with the legend stuff. At some point I’ll hide it with no data but for now it’s just there as empty when you start - assuming Legend is checked on.
Mark
By the way, if you haven’t tried the Legend, when you mouse over the legend entries it will tell you what Palette Index they are so it’s easy to change their color by using the Edit Palette button (which now has the indices showing for each color). This includes marker colors. The palette is saved in configurations.
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@beachside I’ve just posted the latest version with, among other things, the ability to view frequency response in dBr (and all the other units). Please let me know if it works 
and if it does what you want. A moderate amount of the Response tab code was updated to allow this, so errors may exist.
For everyone else, there are a number of changes in this version that improve esthetics (such as not having line colors invert when you mouse over them, better default graph background colors, …) and some light bug fixes.
I’ve also added some pretty smart line smoothing to the chirp tests in the Response tab so results will look slightly different.
Mark
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Awesome, I’ve just updated and will give it a go. Thanks for all your ongoing efforts Mark.
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Hi Mark.
Thanks for adding that!
I just gave it a try, and if I take a sweep then select dBr for the Y axis, 1KHz is -3.76dBr, not zero.
Not sure if I’m doing something wrong.
Did you get something similar John?
@beachside I’m sorry I wasn’t specific in the post. dBr can be either based on a frequency’s value or based on maximum measurement or a specific dB. This is based on maximum (like all the spectral tests) - so I don’t yet have a frequency based dBr for now. If you are looking for 3dB bandwidths then it automatically uses the correct (peak) frequency. I’m planning to add additional / frequency selection somewhere with the next update but I’m still considering what and where.
Note when you did a ‘fit to data’ on the Y axis the maximum value was zero.
Mark
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Just had another try, and I think I found why I’m getting something different. Found some strange results.
I was testing a DAC response, testing at -6dBFS using the Play Device output. Play Device Channels was set to ‘L+R’ in that last sweep I posted, and I’m only displaying the left channel. If I change the Play Device Channels setting to just ‘L’, I get a totally different response that does hit 0dBr! Something odd there.
Hi @beachside
I’m not entirely sure what you’re trying to describe here. Could you post the full app screen showing left and right so I can see the axes and settings? Just use the Photo button upper right of the app. Thanks.
Mark
Sorry Mark for the confusion. I’ve grabbed some screenshots.
I’m only sweeping the left channel of a DAC using the new USB mirror output.
With the Play Device set to ‘L+R’ :
And with the Play Device set to ‘Left’ a different response :
I’m not sure why changing the the Play Device to just left when I’m only displaying left would change the response. But it’s possible I’m doing something dumb.
Is it possible to adjust text color? If I select black background, text remains black… With dark theme text is white, but there are issues with themes. Or is it possible to modify default themes/do custom themes?