78rpm EQ Curve Generator

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steve
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Re: 78rpm EQ Curve Generator

Post by steve » Tue Feb 07, 2012 6:49 pm

steve wrote:There's a bug in "78rpm EQ Curve Generator" that we'd missed.

On Windows, if the output path is set to "D:" the path is not found.
(Thanks to Edgar for spotting the same problem in writefile.ny)

The problem is that if the working directory is a drive letter, then (setdir ".") returns the path with a "" at the end, whereas for all other paths there is no "" at the end.
This should now be fixed in writefile.ny.

@Irish: What do you think about using this write-to-file function in your 78rpm EQ Curve Generator?
(It's not yet been tested on Mac, so that needs to be done first)
9/10 questions are answered in the FREQUENTLY ASKED QUESTIONS (FAQ)

rsdrp
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Re: 78rpm EQ Curve Generator

Post by rsdrp » Mon Nov 02, 2020 5:10 pm

Hello,
I find this plugin very useful for remastering old 78 records. Especially "cancel RIAA" option in ver.2. Unfortunately, in later versions this feature is not available. I understand, that it's possible to use "invert RIAA". But I think it's more convenient to do everything in one step.
My questions are the following. Is it OK to use ver.2 (small bugs for me not a problem)? Or I have to use the latest ver.2_7?
Thanks a lot for the valuable help!

steve
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Re: 78rpm EQ Curve Generator

Post by steve » Mon Nov 02, 2020 5:41 pm

rsdrp wrote:
Mon Nov 02, 2020 5:10 pm
Is it OK to use ver.2 (small bugs for me not a problem)? Or I have to use the latest ver.2_7?
If you are referring to Audacity versions, the current version is 2.4.2 https://www.audacityteam.org/download/

This is an ancient forum topic and lots has changed in the past 10 years. The "78EQCurveGen.ny.zip" plug-in is not directly compatible with recent versions of Audacity because the Equalization effect has been replaced by "Filter Curve Eq". However, there is tool included with Audacity 2.4.2 to convert the old Equalization curves to the new format used by Filter Curve Eq: https://manual.audacityteam.org/man/eq_ ... erter.html
9/10 questions are answered in the FREQUENTLY ASKED QUESTIONS (FAQ)

rsdrp
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Re: 78rpm EQ Curve Generator

Post by rsdrp » Mon Nov 02, 2020 9:11 pm

steve wrote:
Mon Nov 02, 2020 5:41 pm
If you are referring to Audacity versions, the current version is 2.4.2 https://www.audacityteam.org/download/

This is an ancient forum topic and lots has changed in the past 10 years. The "78EQCurveGen.ny.zip" plug-in is not directly compatible with recent versions of Audacity because the Equalization effect has been replaced by "Filter Curve Eq". However, there is tool included with Audacity 2.4.2 to convert the old Equalization curves to the new format used by Filter Curve Eq: https://manual.audacityteam.org/man/eq_ ... erter.html
Thank you very much for the answer. I mean ver. 2 of "78EQCurveGen.ny" plug-in. I checked it with Audacity 2.4.2. It works fine. Of course, I have to convert XML to TXT before apply to wav.

I just want to know which version of plug-in shall be used to generate XML curve. I prefer ver.2 because it has option to remove RIAA in one step of Equaliztion. But I find the latest version 2_7 doesn't has this option.

For example I need curve for Deutche Grammophon record from 1928. According to the table in https://wiki.audacityteam.org/wiki/78rp ... ack_curves the turnover is 300 and roll-off -5. I can generate curve, convert it to txt and apply.

The only question is about the right (in terms of EQ curve) version of plug-in .

Thank you!

DVDdoug
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Re: 78rpm EQ Curve Generator

Post by DVDdoug » Tue Nov 03, 2020 10:37 pm

The only question is about the right (in terms of EQ curve) version of plug-in .
I've never digitized a 78, but....

The playback equipment in 1928 wasn't exactly "high fidelity" and you were stuck with whatever gramophone you had so it didn't necessarily match the EQ on particular record. (And of course the recording equipment wasn't that great either.)

So whatever you're hearing isn't what would have been heard on the gramophone and most likely you're not hearing it "as intended".

So my point is... Don't be afraid to tweak the EQ by-ear!



...I heard a mechanical wind-up gramophone a few years ago. It was a cabinet model and it didn't have the "classic" horn on top so I assume the horn was a wood horn built-into the cabinet. It had surprisingly good "tone" and surprising volume for something with no electronics inside! I'm not saying it sounded "good" but it sounded better than the 78s I've heard on more modern equipment. (It might have been a "newer" 78 from the 1950s in excellent condition.)

rsdrp
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Re: 78rpm EQ Curve Generator

Post by rsdrp » Wed Nov 04, 2020 1:14 pm

DVDdoug wrote:
Tue Nov 03, 2020 10:37 pm
So my point is... Don't be afraid to tweak the EQ by-ear!
Thank you very much for your answer. I think the same way. The question is about the point to start. The good idea to start with the original sound that was recorded. To do that we have to restore the original recording curve.
I checked curves generated by plug-in from ver.2 to ver.2_7. They are about the same. The small difference after dot doesn’t matter. I have decided to use ver.2 because it’s possible to convert directly from RIAA in one step

Thanks for everybody!

rsdrp
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Re: 78rpm EQ Curve Generator

Post by rsdrp » Wed Nov 04, 2020 1:25 pm

DVDdoug wrote:
Tue Nov 03, 2020 10:37 pm
I've never digitized a 78, but....
Here is the example of the restored Deutsche Grammophon record was issued in 1928 year
https://drive.google.com/file/d/1hPdvqb ... 0oan9/view

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