How Do I Add more RIAA Curves?

Koukol · Post by **Koukol** » Sun Oct 25, 2015 9:22 pm

Hello,
I've got the list of EQ curves for alternative RIAA settings (thanks everyone) but I don't know how to add them to Audacity.
Can someone explain or point me to where this info is?

I'm using a Scarlett 2i2 to rip my vinyl which has no RIAA curve.

Post by **Gale Andrews** » Sun Oct 25, 2015 11:05 pm

Koukol wrote:Hello,
I've got the list of EQ curves for alternative RIAA settings (thanks everyone) but I don't know how to add them to Audacity.
Can someone explain or point me to where this info is?

I'm using a Scarlett 2i2 to rip my vinyl which has no RIAA curve.

Do you mean http://wiki.audacityteam.org/w/images/4/4c/EQRecord.xml? The "RIAA" curve is incorrect (deprecated) in that file, as is the "Inverse RIAA" curve. You can use the shipped RIAA curve in Effect > Equalization... in Audacity 2.1.1. If you don't have 2.1.1, please obtain it here: http://audacityteam.org/download/windows.

If you do ever want to add custom EQ curves to Equalization, use the "Save/Manage Curves..." button in the Equalization dialogue, then the "Import..." button. See http://manual.audacityteam.org/o/man/eq ... tml#manage.

Gale

Koukol · Post by **Koukol** » Sun Oct 25, 2015 11:36 pm

Hi Gale,
Thanks for the response.

Right now I use some RIAA found in the "R" section of my EFFECTS list...It's not in the EQ (my EQ doesn't have any default settings)
Unfortunately I have no idea where it came from...I think I found it online somewhere and loaded it a year ago.

I Googled RIAA Curves today and found these....I then pasted them to my desktop QuickFox memo pad.

Code: Select all

<curve name="RIAA">
		<point f="20.000000000000" d="19.274000000000"/>
		<point f="25.000000000000" d="18.954000000000"/>
		<point f="31.000000000000" d="18.516000000000"/>
		<point f="40.000000000000" d="17.792000000000"/>
		<point f="50.000000000000" d="16.946000000000"/>
		<point f="63.000000000000" d="15.852000000000"/>
		<point f="80.000000000000" d="14.506000000000"/>
		<point f="100.000000000000" d="13.088000000000"/>
		<point f="125.000000000000" d="11.563000000000"/>
		<point f="160.000000000000" d="9.809000000000"/>
		<point f="200.000000000000" d="8.219000000000"/>
		<point f="250.000000000000" d="6.677000000000"/>
		<point f="315.000000000000" d="5.179000000000"/>
		<point f="400.000000000000" d="3.784000000000"/>
		<point f="500.000000000000" d="2.648000000000"/>
		<point f="630.000000000000" d="1.642000000000"/>
		<point f="800.000000000000" d="0.751000000000"/>
		<point f="1000.000000000000" d="0.000000000000"/>
		<point f="1250.000000000000" d="-0.744000000000"/>
		<point f="1600.000000000000" d="-1.643000000000"/>
		<point f="2000.000000000000" d="-2.589000000000"/>
		<point f="2500.000000000000" d="-3.700000000000"/>
		<point f="3150.000000000000" d="-5.038000000000"/>
		<point f="4000.000000000000" d="-6.605000000000"/>
		<point f="5000.000000000000" d="-8.210000000000"/>
		<point f="6300.000000000000" d="-9.980000000000"/>
		<point f="8000.000000000000" d="-11.894000000000"/>
		<point f="10000.000000000000" d="-13.734000000000"/>
		<point f="12500.000000000000" d="-15.609000000000"/>
		<point f="16000.000000000000" d="-17.708000000000"/>
		<point f="20000.000000000000" d="-19.620000000000"/>
		<point f="25000.000000000000" d="-21.542000000000"/>
		<point f="48000.000000000000" d="-27.187000000000"/>
</curve>

I'm hoping one will be better than what I have now.

Now that I know it goes in the EQ... I still don't know how to Import these.

Post by **Gale Andrews** » Sun Oct 25, 2015 11:56 pm

I don't understand why you want to make this complicated. What version of Audacity are you using? Please see the pink panel at the top of the page.

The curve you posted appears to be the same as the one currently shipped with the Equalization effect in Audacity 2.1.1 and many versions before that. So, simply use that curve by opening Equalization and selecting the "RIAA" curve from the "Select Curve:" box.

Koukol wrote:Now that I know it goes in the EQ... I still don't know how to Import these.

I answered that in my first reply:

Gale Andrews wrote: If you do ever want to add custom EQ curves to Equalization, use the "Save/Manage Curves..." button in the Equalization dialogue, then the "Import..." button. See http://manual.audacityteam.org/o/man/eq ... tml#manage.

If you have an obsolete Audacity version that does not have the "Save/Manage Curves" feature in Equalization, I recommend you upgrade to 2.1.1: http://audacityteam.org/download/windows.

Gale

Koukol · Post by **Koukol** » Mon Oct 26, 2015 12:46 am

I'm sorry but I suffer from MS so everything is complicated for me.
Some days I can't string a sentence together.

And sorry for missing the top...I'm running Windows 10 and have the 2.0.1.0 version of Audacity.

I found the RIAA in the EQ... it was as simple as scrolling up since I made so many custom settings (again MS)

However, I didn't even know until now to look there.

I still don't know how to Import this "<point f="4000.000000000000" d="0.000000000000"/>" into the EQ

But I sense you're agitated so I won't bother you again.

Koukol · Post by **Koukol** » Mon Oct 26, 2015 12:49 am

Oh...I forgot to thank you for your help

Thanks,Gale!

Post by **kozikowski** » Mon Oct 26, 2015 3:37 am

You don't import that directly.

The equalizer tool uses XML files to "contain" the instructions and the instructions should be relatively complete. I'm not sure what would happen if you installed a single point instruction.

Steve wrote a voice filter that's handy for getting rid of rumble and other vocal interference. It's called LF_rolloff_for_speech.xml

If I open it up in a text editor it looks like this:

<equalizationeffect>
<curve name="LF rolloff for speech">
<point f="50.0" d="-120.0"/>
<point f="60.0" d="-50.0"/>
<point f="65.0" d="-24.0"/>
<point f="70.0" d="-12.0"/>
<point f="80.0" d="-4.0"/>
<point f="90.0" d="-1.0"/>
<point f="100.0" d="0.0"/>
</curve>
</equalizationeffect>

I wrote simplified instructions for installing it. This file is normally shipped around as a ZIP file to keep transmission damage to a minimum. Unzip the file to get the xml file that you actually install. If you're in Windows, you may not see the dot-xml on the end of the filename. Windows insists on hiding it to "help you."

Adding Audacity Equalization Curves
-- Select something on the timeline.
-- Effect > Equalization > Save/Manage Curves > Import
-- Select LF_rolloff_for_speech.xml > OK. (it won't open the ZIP. You have to decompress it)
-- LF rolloff for speech now appears in the equalization preset curve list.

Let us know if you get stuck.

Koz

Koukol · Post by **Koukol** » Mon Oct 26, 2015 8:15 pm

Thanks, Koz.
I have the 100Hz Rumble so I assume that's the Curve you're talking about.

Post by **Gale Andrews** » Tue Oct 27, 2015 12:06 am

kozikowski wrote:The equalizer tool uses XML files to "contain" the instructions and the instructions should be relatively complete. I'm not sure what would happen if you installed a single point instruction.

Steve wrote a voice filter that's handy for getting rid of rumble and other vocal interference. It's called LF_rolloff_for_speech.xml

If I open it up in a text editor it looks like this:

<equalizationeffect>
<curve name="LF rolloff for speech">
<point f="50.0" d="-120.0"/>
<point f="60.0" d="-50.0"/>
<point f="65.0" d="-24.0"/>
<point f="70.0" d="-12.0"/>
<point f="80.0" d="-4.0"/>
<point f="90.0" d="-1.0"/>
<point f="100.0" d="0.0"/>
</curve>
</equalizationeffect>

The XML file to be imported does not absolutely need the <equalizationeffect> at the top and </equalizationeffect> at the bottom. Those tags do no harm, but Audacity will remove them when adding an imported curve to its master curve file called "EQCurves.xml" (which is stored in Audacity's folder for application data).

The curve does need <curve> at the top and </curve> at the bottom of the XML file, which Koukol's RIAA curve does have.

So, Koukol, are you happy now to select the RIAA curve that already comes with Equalization in Audacity 2.0.1?

And do you know now how to import a new curve if you need to?

Gale

Koukol · Post by **Koukol** » Tue Oct 27, 2015 4:08 pm

Hi Gale.
I found the original RIAA in the EQ which sounds better than the one I downloaded...thanks

For my taste I still need to boost the treble after though.

However, now that I know where the "EQCurves.xml" is I can't open it with my free WinRAR so I can't paste the above curves.(if that's what I need to do)

On the Computer Audiophile site I found this...
" Audacity has several RIAA equalization variations to choose from:"
In a screen capture it shows quite a few other options like COLUMBIA LP and NAB.
(I'm also now curious about the eRIAA curve)
My 2.1.1.0 version just has one RIAA

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How Do I Add more RIAA Curves?

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