REW Beta Release REW API beta releases

[majorwong]

Try taking a measurement using periodic noise and without averaging. The microphone should be in a fixed location, e.g. on a tripod.

Thanks so much,test it today with a powered speaker,nothing wrong with it,it's OK now.

 

[John Mulcahy]

John, I"m trying to get a microphone correction file. I made a measurement with a reference microphone(A), a second measurement with an unknown microphone(B). If I"m doing zero smoothing, arithmetic |B|/|A| gives a repetition of the unsmoothed measure B minus the full scale of the input level. If I smooth out both measurements to 1/1 it turns out almost fine (coincidence), but the discrepancy is about 2 dB after 4 kHz. If I smooth out 1/48, it turns out better, but after 8kHz, the discrepancy is 2dB. How do I do what I want to do correctly?

Trace arithmetic on measurements with impulse responses is done on the impulse responses using unsmoothed data, the smoothing of the A measurement is applied to the result. To do arithmetic on smoothed data make magnitude copies and do the arithmetic on those, or for magn and phase export the measurements as text and reimport for arithmetic.

 

[sm52]

To do arithmetic on smoothed data make magnitude copies and do the arithmetic on those, or for magn and phase export the measurements as text and reimport for arithmetic.

I will try. Thank you.

There is a wish. For example, the All Spl window. If in the list of measurements twice click on the latter, it is highlighted. And if on any other, it is not highlighted. It is impossible to change the measurement order. Is it possible to make it so that with double clicking on any measurement it is highlighted. For example, I need this for a screenshot to pay attention to the desired measurement.

 

[John Mulcahy]

For example, the All Spl window. If in the list of measurements twice click on the latter, it is highlighted.

Double clicking on a measurement in the list of any overlay window, including All SPL, makes that measurement the current selection for the individual measurement graphs, as indicated by the blue bar on the right hand side of the measurement. If you have selected the option to "Highlight current selection on overlays" in the View preferences trace highlight options the current selection is highlighted.

It is impossible to change the measurement order.

Measurement order can be changed by drag and drop. To move an individual measurement in the Overlays list press and hold the left mouse button.

Is it possible to make it so that with double clicking on any measurement it is highlighted. For example, I need this for a screenshot to pay attention to the desired measurement.

You can highlight any measurement or trace by moving the mouse over its entry in the graph legend. Opening the image capture dialog using Alt+C allows that to be captured.

 

[sm52]

Double clicking on a measurement in the list of any overlay window, including All SPL, makes that measurement the current selection for the individual measurement graphs, as indicated by the blue bar on the right hand side of the measurement. If you have selected the option to "Highlight current selection on overlays" in the View preferences trace highlight options the current selection is highlighted.

It doesn"t work for me.

Measurement order can be changed by drag and drop.

Here I meant that the measurements were grouped for my goals, and therefore I cannot drag them.

You can highlight any measurement or trace by moving the mouse over its entry in the graph legend. Opening the image capture dialog using Alt+C allows that to be captured.

Yes, when the mouse pointer is over an entry in the legend, the measurement is highlighted. But I want the highlighting to always work after I"ve made the measurement the current double-click. Even if REW has screenshot hot buttons, it is more convenient to use the mouse. I also almost always use OS scissors.

 

[John Mulcahy]

I'll look at it. In the meantime you can use Ctrl+H to toggle the highlight for the selected measurement.

 

[sm52]

you can use Ctrl+H to toggle the highlight for the selected measurement.

It works. Each time you press Ctrl+H, it highlights the selected measurement and turns it off. It would be possible to make the first double click turn on the backlight, the second double click turn it off.

 

[navid0308]

What would cause the EQ to apply such an aggressive negative high shelf? You can see in the screenshots that the equalized response is well below the target after the shelf. Is it because I am using FDW?

These are the settings I used-

 

[John Mulcahy]

Shelf looks to be about -2 dB, wouldn't describe that as aggressive. If you want the result to follow the target more closely give it more latitude in the boost limits.

 

[navid0308]

Shelf looks to be about -2 dB, wouldn't describe that as aggressive. If you want the result to follow the target more closely give it more latitude in the boost limits.

With everything maxed out, it still settles on a negative shelf that drops it below target. The main issue is that the other atmos channels have similar responses but they don't get a shelf like this, so it's introducing somewhat of an imbalance between TRL and TRR speaker pair.

For reference, here's TRL with everything maxed out. I generally keep boost at 0 or very low because it seems to be inconsistent.

Here's how their pre-EQ spatially averaged responses look. You can see that they don't have a lot of variation in the highs between each other to begin with.

 

[John Mulcahy]

I can take a look tomorrow if you attach the mdat and the house curve file.

 

[navid0308]

Thanks for the prompt response! Here you go.

Just as a FYI, the responses are aligned to the target @ 75db, however, after FDW with 15 cycles, the level drops by about 0.5db, that's why in my screenshots you saw the level @ 74.5db.

 

[John Mulcahy]

Builds updated today (beta 91) with these changes:

• Changed: Target match shelf filter cuts adjusted to reduce risk of leaving response below target
• Changed: Frequency meter shows a filtered average frequency
• Changed: Removed View preference to highlight the selected measurement on overlays, can use Ctrl+H to toggle highlight
• Fixed: The waterfall and spectrogram 3D plots did not reflect the banded colours choice of the graph colour scheme
• Fixed: Measurements started via the API would not wait for a timing reference unless Measurement sweep had been selected as the signal on the generator
• Fixed: Changes to the cubehelix 3D colour scheme settings were not updating the plot

 

[John Mulcahy]

Here you go.

I have made a small change to the shelf handling in the latest beta.

 

[navid0308]

I have made a small change to the shelf handling in the latest beta.

Can confirm it's behaving more predictably with the high shelf. Thank you for this update!

 

[Prolab]

I can not find alignment tool section, Isn't there ?

 

[Prolab]

I can not find alignment tool section, Isn't there ?

I just found it

 

[sam_adams]

@John Mulcahy, some JREs ( on macos 15.5 x86 and ARM64 ) from latest beta in the 3d visualization overlay using the data set from the ASCILab F6Bs ASR review.

The 3D plotting is a really nice addition to data visualization with REW, by the way. Could we see balloon plots in a future release?

 

[John Mulcahy]

Builds updated today (beta 92) with these changes:

• Added: Overlays 3D plot has an option to highlight the data sets that make up the plot
• Fixed: Index out of bounds errors when viewing 3D plots

 

[John Mulcahy]

Could we see balloon plots in a future release?

No plans for balloon plots. The idea that horizontal and vertical slices can be meaningfully interpolated to produce the response over a sphere seems more than a little optimistic to me, the plot is unlikely to resemble reality off the measured planes.

 

[thothsong]

Builds updated today (beta 92)

The links in the first post are still pointing at 91 for me.

 

[John Mulcahy]

Yes, having a problem with the upload, bear with me...

 

[Breeman]

Hi John,

When performing graph equalization by dragging filters in EQ tab, the pop up buttons (on the bottom right of the graphing area) used to change the frequency axis, often block the filter editing pointers when working with large, negative filter Qs at higher frequencies.

One has to change the amplitude axis upwards to access the pointer again.

It would be great to be able to toggle those buttons on and off. Thanks.

 

[John Mulcahy]

Beta 92 files should be available now.

 

[John Mulcahy]

When performing graph equalization by dragging filters in EQ tab, the pop up buttons (on the bottom right of the graphing area) used to change the frequency axis, often block the filter editing pointers when working with large, negative filter Qs at higher frequencies.

Fixed for the next build.