REW Beta Release V5.30 beta release

[listener800]

Ah, must've missed that. Thank you!

 

[IWC Doppel]

MAC V5.30 beta 2

I can't seem to locate the alignment tool and the controls tab seems to have less functions available, has it moved location, I cant seem to find it ?!

 

[John Mulcahy]

There is a graph Actions button next to the graph Controls button for graphs which have actions to carry out on the data, including all the Overlay graphs, the SPL & Phase graph and the Impulse graph. The Actions button shows a panel with the action buttons and controls on it that can be repositioned, reducing clutter on the graph by taking those actions out of the graph controls panel.

 

[IWC Doppel]

John, Thanks

 

[MatiasR]

Congrats on the big update, John!

 

[onlyoneme]

Hi John, I got this

and this

during stepped SMPTE measurement. Is it normal that input RMS level reported in watts during the measurement does not map to the input watts level on the graph?

Does the x-axis on the graph operate A-weighted values? Is there a way to switch to unweighted values?

 

[John Mulcahy]

The reference level for SMPTE IMD is the level of f2, not the total input.

 

[onlyoneme]

I guess there is no way to switch to the total RMS input actually. Could you consider adding such a feature?

 

[John Mulcahy]

If you calibrate the generator output to reflect the total system level produced you can switch the plot to generator instead of input. On the distortion graph "Input" is the level of the fundamental, for IMD measurements "Fundamental" reflects the reference level.

 

[onlyoneme]

Thx a lot, I forgot about such possibility.

 

[John Mulcahy]

Build links in the first post have been updated to beta 3 with these changes:

• Added: Support for Mosconi equalisers
• Added: Support for Grace Design m908 equaliser
• Added: Show a warning message if overwriting an mdat file will mean the file has fewer measurements
• Added: Output level spinners can be changed in steps of 0.01 dB by using Ctrl+Alt+mouse wheel
• Added: Sawtooth signal can be inverted
• Changed: Added keyboard shortcuts for the EQ filters panel Load (Alt+L), Save (Alt+S), Clipboard copy (Alt+C) and Reset (Alt+R) buttons
• Fixed: Generate minimum phase on imported frequency responses reduced level by 3 dB
• Fixed: Trace arithmetic would not produce a valid result if one or both of the IRs had more than 4M samples. Limit is now 8M samples.

 

[JoinUs]

its not big deal.
Could you please add an option to disable the file name followed by -samplerate?
Every time you export a WAV file, you must change the name one by one.

 

[John Mulcahy]

Could you please add an option to disable the file name followed by -samplerate?
Every time you export a WAV file, you must change the name one by one.

If sample rate is not appended then trying to export more than one rate would not work.

 

[hemiutut]

Hi John
In future updates, can you make the phase of the subwoofers variable in Room Simulator?

Written with a translator.

Greetings

 

[John Mulcahy]

In future updates, can you make the phase of the subwoofers variable in Room Simulator?

There is already a checkbox to invert polarity and a control to alter relative delay.

 

[hemiutut]

There is already a checkbox to invert polarity and a control to alter relative delay.

John, Thanks

 

[listener800]

Any chance of adding accommodation for FabFilter ProQ's bandwidth/Q/slope calculation?

 

[John Mulcahy]

Any chance of adding accommodation for FabFilter ProQ's bandwidth/Q/slope calculation?

No idea what that means, so I'd say no.

 

[HD MOVIE SOURCE]

I appreciate the updates John, thank you.

Just wondering. After using trace arithmetic and exporting as text. I save the text file, which gives you all the details of that measurement. The frequency responses from 2hz all the way up to 24'000 hz are always the same. So, in the text file, 18k is always represented as 18000.000000. This is when "use resolution of measurement" is selected at 96 PPO. So, every speaker export as text uses the exact same frequencies.

However, that same text file, if I import to REW as a frequency response, and then export it as text file, the frequencies are saved differently. 18K or 18000.000000 now becomes 18000.001953 and this goes for all frequencies.

I'm just wondering why this is and what causes this? Does this mean that a saved measurement doesn't have the resolution of an active measurement? When importing a frequency response does it limit the amount of data in the import?

ORIGINAL TEXT FILE START
2.197266
2.213188
2.229226
2.245379
2.261650

IMPORTED FREQUENCY RESPONSE TEXT FILE TO REW THEN SAVED
2.197266
2.213188
2.229226
2.245380<<<<<
2.261651

As you can see, it starts off equally, but then after line 3, there is a slight deviation in resolution, and over the course of 24K it stretches the frequency points ever so slightly after line 3. If I was to see this in the video world, I'd say that there's some type of scaling happening, and is not in true native resolution. Is that an accurate thought?

There are 1289 lines of text code in both text files.
Thanks.

 

[John Mulcahy]

When a file is imported the spacing is calculated from the file entries. The precision of the entries can mean the result is slightly different to the spacing used when generating the file. In your example the difference is 0.00001%, so not likely to be a problem.

 

[HD MOVIE SOURCE]

When a file is imported the spacing is calculated from the file entries. The precision of the entries can mean the result is slightly different to the spacing used when generating the file. In your example the difference is 0.00001%, so not likely to be a problem.

Thanks John, yeah, it's not a problem, just wondered what caused it.

 

[sm52]

John Mulcahy,​

I described my problem in this post https://www.avnirvana.com/threads/v5-30-beta-release.12707/post-95917. Following your advice to save the settings to a file, I do just that. According to how it is said in Help. The file to save is rewprefs.txt But the problem persists. Today I created several IR presets and deleted others. I saved the settings to a file and closed REW. The settings file was saved at the correct time. Then, 20 minutes later, I opened another measurement file in REW and checked the IR presets. The ones I removed were still there. As for those created today, I’m not sure if all of them remain. Further. The rewprefs.txt file does not differentiate between BLACKMAN_HARRIS_7 and BLACKMAN_HARRIS_4. There is only BLACKMAN_HARRIS.

 

[John Mulcahy]

The rewprefs.txt file does not differentiate between BLACKMAN_HARRIS_7 and BLACKMAN_HARRIS_4.

It does. Please use the "Generate diagnostic file" option in the Help menu and attach the file here.

 

[sm52]

Here he is.

 

[John Mulcahy]

Thanks. I found issues with when the presets were saved (only when the presets window was closed) and the behaviour when presets are deleted. They have been fixed for the next beta.