Fix misspellings of quadraphonic

AL_LOKI_quadriphonic is left alone since that is what the extension is called
and what code expects. All other instances have been fixed for consistency.

alsoftrc.sample

@@ -286,7 +286,7 @@ nfc = true
 nfc-ref-delay =
 
 ## quad:
-#  Decoder configuration file for Quadrophonic channel output. See
+#  Decoder configuration file for Quadraphonic channel output. See
 #  docs/ambdec.txt for a description of the file format.
 quad =
 

docs/ambisonics.txt

@@ -17,7 +17,7 @@ fully 3D soundfield using as few as 4 channels (or even just 3, if you don't
 mind dropping down to 2 dimensions like many surround sound systems are). This
 representation is called B-Format. It was designed to handle audio independent
 of any specific speaker layout, so with a proper decoder the same recording can
-be played back on a variety of speaker setups, from quadrophonic and hexagonal
+be played back on a variety of speaker setups, from quadraphonic and hexagonal
 to cubic and other periphonic (with height) layouts.
 
 Although it was developed decades ago, various factors held ambisonics back

presets/presets.txt

@@ -10,12 +10,12 @@ specified angles do not change the decoder behavior).
 Details of the individual presets are as follows.
 
 square.ambdec
-Specifies a basic square speaker setup for Quadrophonic output, with identical
+Specifies a basic square speaker setup for Quadraphonic output, with identical
 width and depth. Front speakers are placed at +45 and -45 degrees, and back
 speakers are placed at +135 and -135 degrees.
 
 rectangle.ambdec
-Specifies a narrower speaker setup for Quadrophonic output, with a little less
+Specifies a narrower speaker setup for Quadraphonic output, with a little less
 width but a little more depth over a basic square setup. Front speakers are
 placed at +30 and -30 degrees, providing a bit more compatibility for existing
 stereo content, with back speakers at +150 and -150 degrees.

utils/alsoft-config/mainwindow.cpp

@@ -74,7 +74,7 @@ static const struct NameValuePair {
     { "Autodetect", "" },
     { "Mono", "mono" },
     { "Stereo", "stereo" },
-    { "Quadrophonic", "quad" },
+    { "Quadraphonic", "quad" },
     { "5.1 Surround (Side)", "surround51" },
     { "5.1 Surround (Rear)", "surround51rear" },
     { "6.1 Surround", "surround61" },
@@ -1171,7 +1171,7 @@ void MainWindow::updatePeriodCountSlider()
 
 
 void MainWindow::selectQuadDecoderFile()
-{ selectDecoderFile(ui->decoderQuadLineEdit, "Select Quadrophonic Decoder");}
+{ selectDecoderFile(ui->decoderQuadLineEdit, "Select Quadraphonic Decoder");}
 void MainWindow::select51DecoderFile()
 { selectDecoderFile(ui->decoder51LineEdit, "Select 5.1 Surround Decoder");}
 void MainWindow::select61DecoderFile()

utils/alsoft-config/mainwindow.ui

@@ -694,7 +694,7 @@ configuration file.</string>
         </rect>
        </property>
        <property name="text">
-        <string>Quadrophonic:</string>
+        <string>Quadraphonic:</string>
        </property>
        <property name="alignment">
         <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>