Default EQCurves

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Revision as of 00:24, 12 October 2010 by MartynShaw (talk | contribs) (Improved the RIAA curve, from a spreadsheet of the published break points.)
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Here is a starting point for a default list of curves. This forms part of a Proposal for Import and Export of Equalization curves. Note that I have added some attributed to the 'curve'; these are not decided on yet.

You should be able to copy-paste the curves in the box below into EQCurves.xml and have them appear next time you open 'Effect->Equalization...'.

The following curves have been suggested (only the ones marked in green are actually in the current proposed default curve.

Also see Submit your EQ Curves on the Forum for some possible curves for consideration.


  • 60 Hz notch - Gale: We are going to distribute notch.ny with Audacity which can cut a much deeper notch, so we probably don't need this. Additional parameters have been proposed for this (curve length="8192" category="default" draw="yes" log="yes") but filter length can't be set this way yet.
	<curve name="60Hz notch">
		<point f="49.4" d="0"/>
		<point f="60" d="-120"/>
		<point f="71.3" d="0"/>
	</curve>
	<curve name="acoustic">
		<point f="50" d="-20"/>
		<point f="63" d="5"/>
		<point f="70" d="4.400000095367"/>
		<point f="100" d="3.299999952316"/>
		<point f="125" d="2.5"/>
		<point f="200" d="1.700000047684"/>
		<point f="250" d="0"/>
		<point f="2000" d="0"/>
		<point f="3000" d="-1.5"/>
		<point f="4000" d="-2.5"/>
		<point f="5000" d="-3.299999952316"/>
		<point f="6000" d="-4"/>
		<point f="7000" d="-4.5"/>
		<point f="8000" d="-5"/>
		<point f="9000" d="-10"/>
		<point f="10000" d="-15"/>
		<point f="15000" d="-20"/>
	</curve>
  • amradio
	<curve name="amradio">
		<point f="100" d="-20"/>
		<point f="125" d="-16"/>
		<point f="200" d="-12"/>
		<point f="250" d="-8"/>
		<point f="300" d="-4"/>
		<point f="400" d="0"/>
		<point f="1000" d="0"/>
		<point f="2000" d="-4"/>
		<point f="3000" d="-8"/>
		<point f="4000" d="-12"/>
		<point f="5000" d="-16"/>
		<point f="6000" d="-20"/>
	</curve>
  • bass boost
  Paste here
  • bass cut
  Paste here
  • Inverse RIAA Gale: This is a convenience included in 1.3.12 release, but not mandatory as you can use the button to invert the RIAA curve.
	<curve name="Inverse RIAA">
		<point f="30.000000000000" d="-18.600000381470"/>
		<point f="31.000000000000" d="-18.500000000000"/>
		<point f="50.000000000000" d="-16.899999618530"/>
		<point f="63.000000000000" d="-15.899999618530"/>
		<point f="70.000000000000" d="-15.300000190735"/>
		<point f="100.000000000000" d="-13.100000381470"/>
		<point f="125.000000000000" d="-11.600000381470"/>
		<point f="200.000000000000" d="-8.199999809265"/>
		<point f="250.000000000000" d="-6.699999809265"/>
		<point f="300.000000000000" d="-5.500000000000"/>
		<point f="400.000000000000" d="-3.799999952316"/>
		<point f="500.000000000000" d="-2.599999904633"/>
		<point f="600.000000000000" d="-1.799999952316"/>
		<point f="700.000000000000" d="-1.200000047684"/>
		<point f="800.000000000000" d="-0.800000011921"/>
		<point f="900.000000000000" d="-0.300000011921"/>
		<point f="1000.000000000000" d="0.000000000000"/>
		<point f="2000.000000000000" d="2.599999904633"/>
		<point f="3000.000000000000" d="4.699999809265"/>
		<point f="4000.000000000000" d="6.599999904633"/>
		<point f="5000.000000000000" d="8.199999809265"/>
		<point f="6000.000000000000" d="9.600000381470"/>
		<point f="7000.000000000000" d="10.800000190735"/>
		<point f="8000.000000000000" d="11.899999618530"/>
		<point f="9000.000000000000" d="12.899999618530"/>
		<point f="10000.000000000000" d="13.699999809265"/>
		<point f="15000.000000000000" d="17.200000762939"/>
		<point f="16000.000000000000" d="17.700000762939"/>
	</curve>
  • loudness
  Paste here
  • RIAA Gale: This one is essential. MJS: Agreed, but lets get it right. This is at 1/3rd octave intervals.
	<curve name="RIAA">
		<point f="20.000" d="19.274"/>
		<point f="25.000" d="18.954"/>
		<point f="31.000" d="18.516"/>
		<point f="40.000" d="17.792"/>
		<point f="50.000" d="16.946"/>
		<point f="63.000" d="15.852"/>
		<point f="80.000" d="14.506"/>
		<point f="100.000" d="13.088"/>
		<point f="125.000" d="11.563"/>
		<point f="160.000" d="9.809"/>
		<point f="200.000" d="8.219"/>
		<point f="250.000" d="6.677"/>
		<point f="315.000" d="5.179"/>
		<point f="400.000" d="3.784"/>
		<point f="500.000" d="2.648"/>
		<point f="630.000" d="1.642"/>
		<point f="800.000" d="0.751"/>
		<point f="1000.000" d="0.000"/>
		<point f="1250.000" d="-0.744"/>
		<point f="1600.000" d="-1.643"/>
		<point f="2000.000" d="-2.589"/>
		<point f="2500.000" d="-3.700"/>
		<point f="3150.000" d="-5.038"/>
		<point f="4000.000" d="-6.605"/>
		<point f="5000.000" d="-8.210"/>
		<point f="6300.000" d="-9.980"/>
		<point f="8000.000" d="-11.894"/>
		<point f="10000.000" d="-13.734"/>
		<point f="12500.000" d="-15.609"/>
		<point f="16000.000" d="-17.708"/>
		<point f="20000.000" d="-19.620"/>
		<point f="25000.000" d="-21.542"/>
		<point f="48000.000" d="-27.187"/>
	</curve>

  • rumble filter
  Paste here
  • telephone - 300Hz-3kHz (should it be 3.8kHz?), 4th Order roll-offs. Done from a spreadsheet.
	<curve name="Telephone">
		<point f="20" d="-94.09"/>
		<point f="200" d="-14.25"/>
		<point f="250" d="-7.24"/>
		<point f="300" d="-3.01"/>
		<point f="400" d="-0.41"/>
		<point f="500" d="-0.07"/>
		<point f="1250" d="-0.004"/>
		<point f="2000" d="-0.17"/>
		<point f="2500" d="-0.91"/>
		<point f="3000" d="-3.01"/>
		<point f="4000" d="-10.41"/>
		<point f="20000" d="-65.91"/>
		<point f="25000" d="-73.67"/>
	</curve>
  • treble boost
  Paste here
  • treble cut
  Paste here
  • others that should be in the default list
  Paste here