File:Acoustic weighting curves.svg
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Original file (SVG file, nominally 600 × 600 pixels, file size: 39 KB)
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Summary
| Description |
English: A, B, C and D acoustic weighting curves. |
| Date | 1 December 2005 (original upload date) |
| Source | Own work (Original text: Own work. Mathematica, post-processed in Inkscape.) |
| Author | Lindosland at English Wikipedia. Image recalculated with Mathematica to match article definitions by Inductiveload |
| Other versions | Alternative version at Image:Weighting curves.png |
| SVG development |  This W3C-invalid trigonometry was created with Mathematica.  This trigonometry uses embedded text that can be easily translated using a text editor. |
| Source code | Mathematica codea[f_] := Module[
{num, den},
num = (12200^2*f^4);
den = (f^2 + 20.6^2)*
Sqrt[(f^2 + 107.7^2)*(f^2 + 737.9^2)]*(f^2 + 12200^2);
2 + 20*Log[10, num/den]
];
b[f_] := Module[
{num, den},
num = (12200^2*f^3);
den = (f^2 + 20.6^2)*Sqrt[(f^2 + 158.5^2)]*(f^2 + 12200^2);
0.17 + 20*Log[10, num/den]
];
c[f_] := Module[
{num, den},
num = (12200^2*f^2);
den = (f^2 + 20.6^2)*(f^2 + 12200^2);
0.06 + 20*Log[10, num/den]
];
d[f_] := Module[
{a, h, b},
a = f/(6.8966888496476*10^-5);
h = ((1037918.48 - f^2)^2 + (1080768.16*
f^2))/((9837328 - f^2)^2 + (11723776*f^2));
b = Sqrt[h/((f^2 + 79919.29) (f^2 + 1345600))];
20*Log[10, a*b]
];
LogLinearPlot[
{a[f], b[f], c[f], d[f]},
{f, 10, 100000},
PlotRange -> {-80, 20}
]
|
Mathematica Code
a[f_] := Module[
{num, den},
num = (12200^2*f^4);
den = (f^2 + 20.6^2)*
Sqrt[(f^2 + 107.7^2)*(f^2 + 737.9^2)]*(f^2 + 12200^2);
2 + 20*Log[10, num/den]
];
b[f_] := Module[
{num, den},
num = (12200^2*f^3);
den = (f^2 + 20.6^2)*Sqrt[(f^2 + 158.5^2)]*(f^2 + 12200^2);
0.17 + 20*Log[10, num/den]
];
c[f_] := Module[
{num, den},
num = (12200^2*f^2);
den = (f^2 + 20.6^2)*(f^2 + 12200^2);
0.06 + 20*Log[10, num/den]
];
d[f_] := Module[
{a, h, b},
a = f/(6.8966888496476*10^-5);
h = ((1037918.48 - f^2)^2 + (1080768.16*
f^2))/((9837328 - f^2)^2 + (11723776*f^2));
b = Sqrt[h/((f^2 + 79919.29) (f^2 + 1345600))];
20*Log[10, a*b]
];
LogLinearPlot[
{a[f], b[f], c[f], d[f]},
{f, 10, 100000},
PlotRange -> {-80, 20}
]
Licensing
|
This work has been released into the public domain by its author, Lindosland at English Wikipedia. This applies worldwide. In some countries this may not be legally possible; if so: Lindosland grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law. |
{{Rename image}} {{Rename media}} ← these tags have been added on en:Image:Lindos2.svg
Original upload log
The original description page was here. All following user names refer to en.wikipedia.
- 2005-12-01 18:56 Lindosland 256×256 (68746 bytes)
- 2005-11-30 23:10 Lindosland 256×256× (63564 bytes) A,C and D weighting curves, created by lindosland using OpenOffice Draw
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 00:28, 17 February 2009 | | 600 × 600 (39 KB) | Inductiveload | new version, based on File:Weighting curves.png, which hopefulyl doesn't have rendering issues. |
| 22:25, 26 October 2008 |  | 512 × 461 (67 KB) | Penpen~commonswiki | {{Information |Description={{en|A,C and D weighting curves, created by lindosland using OpenOffice Draw Alternative version at Image:Weighting curves.png}} |Source=Transferred from en:Image:Lindos2.svg |Dat |
File usage
No pages on the English Wikipedia use this file (pages on other projects are not listed).
Global file usage
The following other wikis use this file:
- Usage on de.wikipedia.org
- Usage on hr.wikipedia.org
- Usage on no.wikipedia.org
- Usage on sh.wikipedia.org
- Usage on sr.wikipedia.org
