Recent content by John Mulcahy

Go to the on-axis measurement and use Apply windows to all on the IR windows dialog.

Click the Info button. You don't mention which version you are running. If it's 5.40 beta double click the measurement you want selected for the individual graphs. Full width at half maximum. Shape is Gaussian. Seems obvious to me, going from B to A.

Yes, it's intentional. That feature is widely used by companies for production test. It isn't mentioned in the Pro upgrade text yet as the API is only in the beta version, but it's in the API help: All API GET methods are available whenever the API is running, allowing the API to be used to...

Not if the option to suppress it has been selected, but I'll make a change to display it if there's an attempt to start capture.

Fixed in the next build.

Never mind, I simulated it and tracked down the problem. The code that realigned the input data after detecting the timing signal was truncating a bit too aggressively. Here's a spectrogram of the fixed code for a 256k sweep with a full band reflection at about 3 seconds, 140 dB span. The fix...

Are you using Import sweep recordings? If so, please attach the stimulus WAV and an example of the capture for preset 8. Scratch that, I see you are not. It might be worth trying to see how the result differs. When you make a measurement with 256k and preset 8 please select the Captured graph...

When the timing signal is used REW knows where the sweep starts relative to that and starts its analysis there, excluding earlier data. There's 1 second of silence in the stimulus after the sweep ends. It uses a double length FFT so the deconvolution is not circular. The effect is what happens...

The timing chirp is 5 kHz to 20 kHz, shouldn't really be having an impact. The sweep itself should be chosen to be comfortably longer than the room's reverberation time, so using a longer sweep would be the first suggestion. For anything beyond a typical domestic space I'd recommend at least...

Format is in the Cal files preferences help: Analog microphone cal files can also include sensitivity information. Add a line at the start of the file of the form: Sensitivity -12.34 dBFS where "-12.34" is replaced by the REW dBFS input level when the microphone is driven by 94 dB SPL. When...

Good spot, thanks. The behaviour changed in Java 9. I have fixed it for the next build.

You should probably update to the V5.40 beta and pull the data you want directly over the REW API.

I have adjusted the V/V upper limit to 120 dB. For the export dialog try reducing the font size in the View preferences font options slightly. The test for whether a more compact layout is required wasn't taking into account the effect of the font choice, I've amended that for the next build...

I can see 3 issues, two related to the setup and environment and one an issue in REW. Your measurements have very different timing offsets, some shifted by 170 ms and some not. You should use the timing offset control on the Measure dialog to remove the 170 ms or so delay that is common to...

Probably easiest if you attach an mdat with the two measurement, or email it to the feedback address if you don't want to share it publicly.