Submit your EQ Curves

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Re: Submit your EQ Curves

Permanent link to this post Posted by steve » Sat Jan 19, 2013 5:11 pm

This topic was started so that Audacity users could share their Eq curves with other Audacity users. Sadly the take-up of this opportunity has been disappointing and very few working Eq curves have been submitted.

This topic is still open, so you are very welcome to submit any Eq curves that you come up with that you think may be useful to other Audacity users.
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Re: Submit your EQ Curves

Permanent link to this post Posted by Gale Andrews » Sat Jan 19, 2013 5:47 pm

GuitarRiffs wrote:The default Audacity only comes with like 8 and are "Bass cut" and "treble cut"...
This thread is 12 pages deep, yet there is no link where I can simply download some various EQ curve XML files?
I am missing something big. All I see is a generic link to a wiki that has 1 link to some 78rpm EQ curve.
The ZIP file that was posted with 2 dozen .feq files like "Grunge Rock" and "Soft Classical" is EXACTLY what I want....
Except FEQ doesn't even work in Audacity. Why was it posted here?

I posted it so people could use it in Audacity, obviously. See:
viewtopic.php?p=90976#p90976 .

I assumed someone interested would create XML files from the information given, but it seems no-one was interested, or did not share the files.

As I explained, the entries in the FEQ files are for the following 18 frequencies in Hz:

Code: Select all
55
77
110
156
220
311
440
622
880
1200
1800
2500
3500
5000
7000
10000
14000
20000


Here for example is "Metal.FEQ". This contains the following 18 gain values (amounts by which the frequency will be increased or reduced) for each of the 18 frequencies above:

Code: Select all
4
5
5
3
0
-1
-2
-1
0
1
1
1
1
0
-1
-1
-1
-1


So, open Effect > Equalization. Find 55 Hz (the first frequency) in the Equalization graph. Then find the first gain value in "Metal.FEQ". That first value is "4". So increase the 55 Hz frequency by 4 dB in Equalization. Repeat for the other 17 values. If the gain value is 0, there is no need to create a point on the graph. If the gain value is negative (for example, -1), reduce the gain for that frequency by that amount.

Alternatively (more accurately), create an XML file using the values above. Then import it into Equalization using "Save/Manage Curves...", then "Import...".

This is an example of correct syntax of an XML EQ file that Audacity will be able to import:

Code: Select all
    <equalizationeffect>
       <curve name="new default walkie talkie curve">
          <point f="100.000000000000" d="-20.000000000000"/>
          <point f="125.000000000000" d="-16.000000000000"/>
       </curve>
    </equalizationeffect>


"f" is the frequency (the first set of code in this message) and "d" is the gain amount (the second set of code).


Gale
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Re: Submit your EQ Curves

Permanent link to this post Posted by tts42572 » Wed Mar 06, 2013 1:53 pm

Does anybody out there have any EQ curve presets that work well as starting point for live rock concert recordings?

I always find myself wanting to mostly just increase or reduce bass in these recordings.....But bass cut and bass boost are usually a little too extreme and I end up messing around a lot trying to find something I like.

Just wondering if anybody works a lot with live concert recordings and might have some presets that might make for decent starting points when working on those kinds of files.
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Re: Submit your EQ Curves

Permanent link to this post Posted by Gale Andrews » Wed Mar 06, 2013 7:58 pm

tts42572 wrote:Does anybody out there have any EQ curve presets that work well as starting point for live rock concert recordings?

This is all personal taste. Try some presets in the FEQ file, look in your operating system control panel to see if your sound card has an Equalizer with a rock preset that you can copy, or search on Google.


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Re: Submit your EQ Curves

Permanent link to this post Posted by werewolfgold » Sun Jun 16, 2013 9:42 am

Hey, guys. Just passing through. I saw that no one had really posted any XML files, so did a little typing.

This file contains the default files from Audacity 2, as well as the default ones from the older release (minus the deprecated ones). In addition, I added the Foobar EQs that Gale posted originally, as well as the EQs that are used within Windows Media Player.

To use this file, just take away the " (EX)" part of the filename and overwrite your default EQ file (wherever it may be) and you should be good to go. I know it's been a while, but I hope that anyone else that passes by will fin it useful.

EQCurves (EX).xml
(43.13 KiB) Downloaded 469 times

These are the curves you should have. (To save time, I just copied the names from the XML file.)
<curve name="AM Radio">
<curve name="Telephone">
<curve name="Walkie-talkie">
<curve name="100Hz Rumble">
<curve name="RIAA">
<curve name="Bass Boost">
<curve name="Bass Cut">
<curve name="Treble Boost">
<curve name="Treble Cut">

<curve name="AES">
<curve name="Columbia 78">
<curve name="Columbia LP">
<curve name="Decca FFRR 78">
<curve name="Decca FFRR LP">
<curve name="Decca FFRR Micro">
<curve name="EMI 78">
<curve name="NAB">
<curve name="RCA Victor 1938">
<curve name="RCA Victor 1947">

<curve name="Foobar 1965">
<curve name="Foobar Air">
<curve name="Foobar Brittle">
<curve name="Foobar Car Stereo">
<curve name="Foobar Classic V">
<curve name="Foobar Clear">
<curve name="Foobar Dark">
<curve name="Foobar DEATH">
<curve name="Foobar Drums">
<curve name="Foobar Flat">
<curve name="Foobar Home Theater">
<curve name="Foobar Loudness">
<curve name="Foobar Metal">
<curve name="Foobar Pop">
<curve name="Foobar Premaster">
<curve name="Foobar Presence">
<curve name="Foobar Punch and Sparkle">
<curve name="Foobar Shimmer">
<curve name="Foobar Soft Bass">
<curve name="Foobar Strings">

<curve name="WMP Rock">
<curve name="WMP Rap">
<curve name="WMP Grunge">
<curve name="WMP Metal">
<curve name="WMP Dance">
<curve name="WMP Techno">
<curve name="WMP Country">
<curve name="WMP Jazz">
<curve name="WMP Acoustic">
<curve name="WMP Folk">
<curve name="WMP New Age">
<curve name="WMP Classical">
<curve name="WMP Blues">
<curve name="WMP Oldies">
<curve name="WMP Reggae">
<curve name="WMP Opera">
<curve name="WMP Swing">
<curve name="WMP Speech">
<curve name="WMP Music 56k">
<curve name="WMP Music 28k">

There you have it. Let me know if there are any issues.
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Re: Submit your EQ Curves

Permanent link to this post Posted by Robert J. H. » Sun Jun 16, 2013 2:33 pm

Thanks a lot.
Nice compilation. Took me a while to activate the new curves. The management is somewhat strange - especially if you do not change your curves regularly. However, they are now present and I'll see if they are useful to me.
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Re: Submit your EQ Curves

Permanent link to this post Posted by fmiyara » Fri Jul 26, 2013 5:26 pm

Dear all,

Here is my specification for an A-filter, the filter specified in IEC 61672 for A-weighting sound prior to measurement. Even if this filter has been challenged because it doesn't quite give a true and complete answer to psychoacoustic response measurement of human hearing, it prevails in noise legislation (for instance, OSHA and most noise ordinances) and noise criteria (for instance, ISO 1999).

Moreover, it is one of the two methods to specify background electric noise in audio gear (amplifiers, microphones...). It can be saved to an .xml file and imported from the Effects / Equailizer window.

For knowlegeable people in the list: Is it necessary to provide f and d values with 12 decimal figures?

Regards,

Federico Miyara

<equalizationeffect>
<curve name="RIAA">
<point f="20.000000000000" d="-50.500000000000"/>
<point f="25.000000000000" d="-44.700000000000"/>
<point f="31.000000000000" d="-39.400000000000"/>
<point f="40.000000000000" d="-34.600000000000"/>
<point f="50.000000000000" d="-30.200000000000"/>
<point f="63.000000000000" d="-26.200000000000"/>
<point f="80.000000000000" d="-22.500000000000"/>
<point f="100.000000000000" d="-19.100000000000"/>
<point f="125.000000000000" d="-16.100000000000"/>
<point f="160.000000000000" d="-13.400000000000"/>
<point f="200.000000000000" d="-10.900000000000"/>
<point f="250.000000000000" d="-8.600000000000"/>
<point f="315.000000000000" d="-6.600000000000"/>
<point f="400.000000000000" d="-4.800000000000"/>
<point f="500.000000000000" d="-3.200000000000"/>
<point f="630.000000000000" d="-1.900000000000"/>
<point f="800.000000000000" d="-0.800000000000"/>
<point f="1000.000000000000" d="0.000000000000"/>
<point f="1250.000000000000" d="0.600000000000"/>
<point f="1600.000000000000" d="1.000000000000"/>
<point f="2000.000000000000" d="1.200000000000"/>
<point f="2500.000000000000" d="1.300000000000"/>
<point f="3150.000000000000" d="1.200000000000"/>
<point f="4000.000000000000" d="1.000000000000"/>
<point f="5000.000000000000" d="0.500000000000"/>
<point f="6300.000000000000" d="-0.100000000000"/>
<point f="8000.000000000000" d="-1.100000000000"/>
<point f="10000.000000000000" d="-2.500000000000"/>
<point f="12500.000000000000" d="-4.300000000000"/>
<point f="16000.000000000000" d="-6.600000000000"/>
<point f="20000.000000000000" d="-9.300000000000"/>
<point f="25000.000000000000" d="-12.300000000000"/>
<point f="31500.000000000000" d="-15.700000000000"/>
<point f="40000.000000000000" d="-19.400000000000"/>
<point f="48000.000000000000" d="-22.300000000000"/>
<point f="50000.000000000000" d="-23.000000000000"/>
<point f="63000.000000000000" d="-26.800000000000"/>
<point f="80000.000000000000" d="-30.900000000000"/>
<point f="100000.000000000000" d="-34.700000000000"/>
</curve>
</equalizationeffect>
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Re: Submit your EQ Curves

Permanent link to this post Posted by steve » Fri Jul 26, 2013 6:35 pm

Thanks for your contribution fmiyara.

No, you don't need all the decimal places.
Also, the "curve name" should really be set to something relevant to the curve. The "curve name" is the name that appears in the Equalization effect when the curve has been imported, so perhaps something like "A-weighting".

The attached file is the same as your submission, but with the curve name changed to "A-weighting" and the "f" and "d" parameter written to 1 decimal place.
Attachments
a-weight.xml
(1.18 KiB) Downloaded 76 times
9/10 questions are answered in the FREQUENTLY ASKED QUESTIONS (FAQ)
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Re: Submit your EQ Curves

Permanent link to this post Posted by Kenmartin » Wed Sep 25, 2013 5:33 am

1st time Audacity user here. Nice little tool too. For 78rpm re-equalization, I have taken the RIAA inverse curve and the 250,0 curve generated by the tool and added them together. These seem useful if using 1980s era phono preamp with built-in RIAA curve. By combining the two curves, you don't have to apply the RIAA inverse and then the 250,0 curve. I am playing these back at 78rpm or appropriate speed so there is no speed/pitch shifting taking place. Seems to save a little time anyway. I'm posting the result of the combined curve here in case anyone is interested. This is just one curve, but theoretically you could do it with any of the 78rpm curves. Regards, Ken Martin
<equalizationeffect>
<curve name="RIAAInverse+250,0">
<point f="20" d="1.45931"/>
<point f="25" d="0.181974"/>
<point f="31.5" d="-1.096125"/>
<point f="40" d="-2.289153"/>
<point f="50" d="-3.226623"/>
<point f="63" d="-3.979814"/>
<point f="80" d="-4.511573"/>
<point f="100" d="-4.786353"/>
<point f="125" d="-4.858392"/>
<point f="160" d="-4.716202"/>
<point f="200" d="-4.40141"/>
<point f="250" d="-3.931669"/>
<point f="315" d="-3.320457"/>
<point f="400" d="-2.613813"/>
<point f="500" d="-1.9406"/>
<point f="630" d="-1.268977"/>
<point f="800" d="-0.609595"/>
<point f="1000" d="0"/>
<point f="1250" d="0.650467"/>
<point f="1600" d="1.483402"/>
<point f="2000" d="2.391683"/>
<point f="2500" d="3.479115"/>
<point f="3150" d="4.800788"/>
<point f="4000" d="6.357596"/>
<point f="5000" d="7.955824"/>
<point f="6300" d="9.722398"/>
<point f="8000" d="11.633488"/>
<point f="10000" d="13.47202"/>
<point f="12500" d="15.344962"/>
<point f="16000" d="17.443063"/>
<point f="20000" d="19.354656"/>
<point f="25000" d="21.275162"/>
<point f="31500" d="23.269941"/>
<point f="48000" d="26.912142"/>
</curve>
</equalizationeffect>
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Re: Submit your EQ Curves

Permanent link to this post Posted by PeterG » Wed Dec 04, 2013 1:54 am

I am making a podcast where I wanted to have something similar to what I've heard on the public radio show Radio Lab (great show!). In the show, there is an occasional voice that adds a response or echo to the main text and it is similar to the Telephone filter only a narrower filter. I played around and this is what I came up with:

<equalizationeffect>
<curve name="Radio Lab">
<point f="20.000000000000" d="-94.087000000000"/>
<point f="300.849238656919" d="-30.000000000000"/>
<point f="384.088022726365" d="-19.595375061035"/>
<point f="469.754175105199" d="-9.364161491394"/>
<point f="591.890260632552" d="-3.815028905869"/>
<point f="751.606680168320" d="-1.213872790337"/>
<point f="926.984202221522" d="0.000000000000"/>
<point f="1422.823160866849" d="0.000000000000"/>
<point f="2022.875471952556" d="-0.867052018642"/>
<point f="2441.027294112950" d="-2.254335165024"/>
<point f="2859.908931595192" d="-6.069364070892"/>
<point f="3672.136700429033" d="-13.526011466980"/>
<point f="5534.679924002857" d="-29.306358337402"/>
<point f="48000.000000000044" d="-88.117000000000"/>
</curve>
</equalizationeffect>
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