REW Beta Release REW API beta releases

miniDSP and AV Nirvana
Builds updated today (beta 93) with these changes:
  • Changed: Hide graph overlay buttons when graphically editing filters
  • Changed: If the Ctrl key is held while dragging WAV files onto the REW window they will be treated as audio imports instead of IR imports
  • Fixed: Graph capture button was missing from RTA and Filter adjust graphs
 
Hi John,

Is it possible to generate an average from individual measurements (after they were taken) which includes the span?
Similar to what I get when using multi-input capture:
Screenshot 2025-07-01 at 12.55.12.png
 
John, I have a microphone correction file from 0 Hz to 24 kHz. But REW uses data from this file up to 20 kHz. Is that so?
 
If I know Full Scale SPL, is it possible to specify this in the microphone correction file, as the sensitivity is indicated?
 
I was referring to the way this line is written: "Sensitivity -12.34 dBFS". Now everything is clear to me. Thank you.
 
Builds updated today (beta 94) with these changes:
  • Added: SPL & Phase graph has an option to label the distortion components for RTA spectrum captures
  • Changed: Reduced brightness of 3D plot surface to better show surface shading
  • Fixed: Poor EQ target match when overall gain was allowed, caused by a fix for handling Q limits for classic Q in 5.31.2
  • Fixed: Possible index out of bounds after deleting measurements
 
John Mulcahy said:
Builds updated today (beta 94) with these changes:
  • Added: SPL & Phase graph has an option to label the distortion components for RTA spectrum captures
  • Changed: Reduced brightness of 3D plot surface to better show surface shading
  • Fixed: Poor EQ target match when overall gain was allowed, caused by a fix for handling Q limits for classic Q in 5.31.2
  • Fixed: Possible index out of bounds after deleting measurements
Click to expand...
The new SPL & Phase graph option displays the distortion labels high on the graph.

SPL & Phase graph has an option.png
 
Hey，John.it seems that the Volt measurement calibration was not supported in REW,would you like to add this into it to make sure the voltage compensation in the full frequncy range.Thank!
 
majorwong said:
Hey，John.it seems that the Volt measurement calibration was not supported in REW,would you like to add this into it to make sure the voltage compensation in the full frequncy range.Thank!
Click to expand...
I don't understand your comment, sorry. Input voltage calibration can be accessed on the RTA and in the calibration data.
 
John Mulcahy said:
I don't understand your comment, sorry. Input voltage calibration can be accessed on the RTA and in the calibration data.
Click to expand...
Sorry.i'm from HK,maybe I always speak Chinese and think in Chinese way.
Oh,not this one.This is only the signle point(1kHz always) for calibration.Maybe we need 20~20kHz range for the voltage calibration.Why?Because if you calibrate using 1kHz for input voltage reference,after calibration when you measure amp's output voltage at 50Hz(as for the FR,many soundcard drops off below 100Hz)，it's not shown the same voltage which compares with the precise voltmeter.
SImply put,loading a line input calibration file also ensures the full range voltage caliration,that's it! Thank.
 
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You misunderstand. The voltage calibration is to determine the relationship between ADC data values and voltage. It is independent of frequency. The frequency responses of the soundcard input and output are captured by the soundcard cal.
 
John Mulcahy said:
You misunderstand. The voltage calibration is to determine the relationship between ADC data values and voltage. It is independent of frequency. The frequency responses of the soundcard input and output are captured by the soundcard cal.
Click to expand...
Is there no influence from the analog input front end circuitry that feeds the ADC chip?
 
It doesn't matter where any frequency-dependent effects occur, the cal files are there to compensate for them.
 
Hi,
I am trying to install the latest version as I have rebuilt my PC, so I lost the old install. Using Windows 11 and I can't get it to install at all. I open the install file and all I get is a white square with no writing. If I use my keyboard to tab around the box, I can get it to select exit but not Next to start the install. I have tried different resolutions, HDR off and on, uninstalling the Nvidia graphics drivers, uninstalling Powertoys (this once screwed up some video editing s/w awhile ago, so thought it may be doing the same). If I switch between the HDR modes the writing will appear but I can't select the Next box with either my mouse keyboard. I have installed the latest version of Java, but made no difference. I'm at a bit of a loss as to what to try next?

Cheers Dave W
 
Bolosun said:
I'm at a bit of a loss as to what to try next?
Click to expand...
You could try running the installer from a Windows terminal with the argument /create-i4j-log, e.g.

> ./REW_windows-x64_5_40_beta94-api.exe /create-i4j-log

That will produce a log file and show you where it is before starting the installer. The log file might provide some clue about what is preventing the installer from running.
 
Last edited:
Builds updated today (beta 95) with these changes:
  • Fixed: SPL & Phase graph labelling of distortion components did not work for dBr and V/V axis selections
  • Fixed: Virtual balanced options might not be enabled after startup for some ASIO drivers
 
John Mulcahy said:
You could try running the installer from a Windows terminal with the argument /create-i4j-log, e.g.

> ./REW_windows-x64_5_40_beta94-api.exe /create-i4j-log

That will produce a log file and show you where it is before starting the installer. The log file might provide some clue about what is preventing the installer from running.
Click to expand...
Ran it with creating the log, but there are no error messages. Does the installer need .net packages or something else? I managed to boot my system with my old boot drive and it works as it should, apart from I can't find the API tab to make sure the server is running.
 
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