diff --git a/images/compression-curve.svg b/images/compression-curve.svg
index db27a634c..84a43cade 100644
--- a/images/compression-curve.svg
+++ b/images/compression-curve.svg
@@ -13,7 +13,7 @@
    viewBox="0 0 222.99424 225.08009"
    height="63.522602mm"
    width="62.933929mm"
-   inkscape:version="0.91 r13725"
+   inkscape:version="0.92.5 (2060ec1f9f, 2020-04-08)"
    sodipodi:docname="compression-curve.svg">
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      pagecolor="#ffffff"
@@ -24,16 +24,16 @@
      guidetolerance="10"
      inkscape:pageopacity="0"
      inkscape:pageshadow="2"
-     inkscape:window-width="1536"
-     inkscape:window-height="1006"
+     inkscape:window-width="2560"
+     inkscape:window-height="1370"
      id="namedview3624"
      showgrid="false"
-     inkscape:zoom="3.5720619"
-     inkscape:cx="103.99832"
-     inkscape:cy="103.42757"
-     inkscape:window-x="47"
-     inkscape:window-y="0"
-     inkscape:window-maximized="0"
+     inkscape:zoom="3.5708892"
+     inkscape:cx="49.372247"
+     inkscape:cy="119.35598"
+     inkscape:window-x="0"
+     inkscape:window-y="33"
+     inkscape:window-maximized="1"
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   <defs
      id="defs4">
@@ -58,12 +58,6 @@
       </cc:Work>
     </rdf:RDF>
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@@ -72,70 +66,54 @@
      x="0.88485998"
      y="0.49999949" />
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-     sodipodi:linespacing="125%"
      xml:space="preserve"
-     style="font-style:normal;font-weight:normal;font-size:10px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-     x="45.493343"
-     y="178.95796"
-     id="text4150"><tspan
+     style="font-style:normal;font-weight:normal;font-size:10px;line-height:0%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+     x="184.55588"
+     y="-103.66296"
+     id="text4150"
+     transform="rotate(90)"><tspan
        id="tspan4152"
-       x="45.493343"
-       y="178.95796">treshold</tspan></text>
+       x="184.55588"
+       y="-103.66296">knee</tspan></text>
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-     d="m 40.81561,134.64265 c 7.96187,-16.0392 42.2811,-46.000016 60.97318,-51.440166"
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+     d="M 40.81561,134.64265 C 57.874015,102.26682 69.173442,93.283723 101.78879,83.202484"
+     style="fill:none;fill-rule:evenodd;stroke:#010000;stroke-width:1.99999994;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:3.99999988, 1.99999993999999992;stroke-dashoffset:0;stroke-opacity:1;opacity:1"
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   <path
      inkscape:connector-curvature="0"
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-     y="49.180286"
+     style="font-style:normal;font-weight:normal;font-size:10px;line-height:0%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:0.30588235;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
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+     y="60.580776"
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        id="tspan4208"
-       x="119.55765"
-       y="49.180286">ratio</tspan></text>
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+       y="60.580776">ratio</tspan></text>
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      xml:space="preserve"
-     style="font-style:normal;font-weight:normal;font-size:10px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#288c28;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
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-     id="text4210"><tspan
-       id="tspan4212"
-       x="46.465595"
-       y="82.16362">hard knee</tspan></text>
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-     xml:space="preserve"
-     style="font-style:normal;font-weight:normal;font-size:40px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#ff0000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
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+     style="font-style:normal;font-weight:normal;font-size:5px;line-height:0%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
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+     y="108.1179"
+     id="text4214"
+     transform="rotate(-18.130205)"><tspan
        id="tspan4216"
-       x="71.884857"
-       y="112.50001"
-       style="font-size:10px;fill:#ff0000;fill-opacity:1">soft knee</tspan></text>
+       x="109.07931"
+       y="108.1179"
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      xml:space="preserve"
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@@ -144,32 +122,71 @@
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      y="-215.39658"
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-     transform="matrix(0,1,-1,0,0,0)"><tspan
+     transform="rotate(90)"><tspan
        id="tspan4228"
        x="74.970711"
        y="-215.39658">output level</tspan></text>
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+  <path
+     style="opacity:1;fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1.00000012;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:1.00000002, 1.00000002;stroke-dashoffset:0;stroke-opacity:1"
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+     transform="rotate(90)"><tspan
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+  <text
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+     style="font-style:normal;font-weight:normal;font-size:5.00000048px;line-height:0%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.99999994px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
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