diff --git a/images/bpf-warning.png b/images/bpf-warning.png
new file mode 100644
index 0000000..6a3d840
Binary files /dev/null and b/images/bpf-warning.png differ
diff --git a/images/lpf-warning.svg b/images/bpf-warning.svg
similarity index 93%
rename from images/lpf-warning.svg
rename to images/bpf-warning.svg
index ed493e6..2f30c49 100644
--- a/images/lpf-warning.svg
+++ b/images/bpf-warning.svg
@@ -14,7 +14,7 @@
    id="svg2"
    version="1.1"
    inkscape:version="0.48.4 r9939"
-   sodipodi:docname="lpf-warning.svg">
+   sodipodi:docname="bpf-warning.svg">
   <defs
      id="defs4" />
   <sodipodi:namedview
@@ -54,7 +54,7 @@
         <dc:format>image/svg+xml</dc:format>
         <dc:type
            rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
-        <dc:title></dc:title>
+        <dc:title />
       </cc:Work>
     </rdf:RDF>
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@@ -75,7 +75,7 @@
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        id="flowRoot3755"
        style="font-size:40px;font-style:italic;font-weight:normal;text-align:center;line-height:125%;letter-spacing:0px;word-spacing:0px;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Sans;-inkscape-font-specification:Sans Italic"
-       transform="translate(-218.82268,-18.163162)"
+       transform="translate(-212.82268,-18.163162)"
        inkscape:export-filename="/home/pcfl/temprect.png"
        inkscape:export-xdpi="79.604744"
        inkscape:export-ydpi="79.604744"><flowRegion
@@ -105,7 +105,7 @@
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-       transform="translate(-118.22313,32.374383)"
+       transform="translate(-112.22313,32.374383)"
        inkscape:export-filename="/home/pcfl/temprect.png"
        inkscape:export-xdpi="79.604744"
        inkscape:export-ydpi="79.604744"><flowRegion
@@ -120,7 +120,7 @@
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-       transform="translate(-149.32784,81.86445)"
+       transform="translate(-129.32784,81.86445)"
        inkscape:export-filename="/home/pcfl/temprect.png"
        inkscape:export-xdpi="79.604744"
        inkscape:export-ydpi="79.604744"><flowRegion
@@ -131,9 +131,9 @@
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          id="flowPara3761-8-7"
-         style="font-style:normal;font-weight:normal;-inkscape-font-specification:Sans">without a low-pass filter!</flowPara></flowRoot>    <path
+         style="font-style:normal;font-weight:normal;-inkscape-font-specification:Sans">without a band-pass filter!</flowPara></flowRoot>    <path
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-       d="m 793.17678,217.28829 154.16252,0 -76.98796,-134.321147 z"
+       d="m 805.17678,217.28829 154.16252,0 -76.98796,-134.321147 z"
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@@ -142,7 +142,7 @@
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+       d="m 841.67635,159.6381 8.27231,0 c 0,0 3.9235,-12.92725 8.09249,-12.94797 4.16899,-0.0208 7.89662,12.3354 7.89662,12.3354 l 0.50285,-0.0233 c 0,0 3.0665,-12.647 8.14516,-12.492 5.07867,0.15499 7.25689,14.65374 7.25689,14.65374 0,0 3.51856,-14.91846 8.74824,-14.83358 5.2297,0.085 8.09249,13.12782 8.09249,13.12782 l 24.81695,0.17982"
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@@ -151,7 +151,7 @@
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+       d="m 908.86196,159.32199 0,21.49285"
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        inkscape:connector-curvature="0"
        inkscape:export-filename="/home/pcfl/temprect.png"
@@ -159,7 +159,7 @@
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-       d="m 897.04179,213.94768 0,-22.65896"
+       d="m 909.04179,213.94768 0,-22.65896"
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        inkscape:connector-curvature="0"
        inkscape:export-filename="/home/pcfl/temprect.png"
@@ -170,7 +170,7 @@
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+       x="894.29547"
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        inkscape:export-filename="/home/pcfl/temprect.png"
        inkscape:export-xdpi="79.604744"
@@ -180,7 +180,7 @@
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+       x="894.18762"
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        inkscape:export-filename="/home/pcfl/temprect.png"
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diff --git a/images/lpf-warning.png b/images/lpf-warning.png
deleted file mode 100644
index fb9844f..0000000
Binary files a/images/lpf-warning.png and /dev/null differ