John Mulcahy
REW Author
Thread Starter
- Joined
- Apr 3, 2017
- Messages
- 7,844
Unfortunately the alignment tool and the t=0 adjustment cannot coexist on the same graph.I use it ferquently with the alignement tool which is under All SPL.
Unfortunately the alignment tool and the t=0 adjustment cannot coexist on the same graph.I use it ferquently with the alignement tool which is under All SPL.
Thanks, I've fixed that for the next build. A possible workaround in the meantime is to set the alignment tool mode before importing any measurements.Some of the alignment-tool endpoints only seem to work after using the GUI version first.
Super, thanks for the fix & the workaround.Thanks, I've fixed that for the next build. A possible workaround in the meantime is to set the alignment tool mode before importing any measurements.
I have fixed that for the next build. Dismissing popups on mouse wheel events is behaviour that is buried deep in the Java runtime, unfortunately, so overriding it has to happen on a case-by-case basis.the issue still occurs when you right click in the Legend box
Correct. On the All SPL and other overlay graphs the selected measurement has a blue bar on the right hand side.It seems that the info that is displayed when clicking the Info button up top is whatever measurement is selected in the SPL & Phase tab
I have fixed that for the next build.One more bug
No. Imported impulse responses have the IR windows applied to generate their response. Files dropped on the RTA window are treated as audio data and the whole content is used to generate the response. A similar affect can be achieved using Import Audio Data.I imported a wav file with IR via file/import IR. And the same wav file through the RTA window. Should they be the same in curve shape and level after import?
Was that when working with a combination of a measurement with an IR and one without?
I have fixed that for the next build.When opening and processing a stereo wav file created by the REW generator (also any wav with audio) in the RTA window, indicating the processing of both channels after processing the first channel, an error occurs.
Not usually. An impulse response uses a single FFT of the windowed portion, the RTA uses successive FFTs of the chosen length with the chosen overlap.Using the RTA window settings, can I achieve the same shape and level as when importing IR?
No.Is something like this possible in the export settings? To only use whole numbers with no decimal points?
For example: 12049
instead of now, you might see something like 12049.459000
It's a problem with the left window width when the imported responses start at zero seconds, i.e. there is nothing at negative time. I have fixed it for the next build, in the meantime manually increase the left window width.Using the latest beta, when I run rms+phase avg or db+phase avg, the resulting response does not seem to track the combined magnitudes as expected.
Why do you think REW can't do that?Recommend a free program that can analyze and accurately generate the levels and shape of a wav sound file.
I didn't succeed. The screenshot of post 356 shows that from 150 hertz and below, the import results differ. Also, different levels. Which one is true if you don’t know it in advance? Valid is green. It is obtained through IR import. Why is blue 15 dB higher? Because there are too many averagings? What RTA window settings should I apply so that both import results are almost similar?should give much the same result
Yes. I saw it. To get almost identical graphs, I opened the wav with IR in the RTA window twice, with an FFT length of 64k and 128k, and applied a dB average to them. Then the levels coincided. But in the low-frequency part, differences remained in the form of graphs. I got what I wanted. Almost. Thank you. Also, if you press info for these two wav files opened in the RTA window, the excitation line says 65536 and 131072 instead of 64k and 128k.Levels in a spectrum depend on the FFT length
I compared importing IR from a wav file, which results in a frequency response graph (with phase), with opening the same wav file in the RTA window and subsequent processing to obtain a frequency response graph (without phase).Are you talking about import impulse response or import audio data?