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diff --git a/make_patfile.sh b/make_patfile.sh
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+# Convert the FreePats Drums_000 directory to ITL Chorus drums.tar.bz2
+# Note: technically, this must be run in a directory with subdirectories
+# starting with a MIDI pitch, and containing a text file with a
+# "convert_to_wav:" command that produces a .wav in that working directory.
+# sox is required to convert the audio. This handles the dirt-old options
+# for sox in the text files explicitly to support the FreePats standard.
+# The current version was checked in from the Drums_000 directory to be
+# found in the TAR at this URL:
+# http://freepats.zenvoid.org/samples/freepats/freepats-raw-samples.tar.bz2
+# Thank you again, FreePats!
+
+rm *.wav .wav *.raw .raw
+
+for i in *; do
+	if [ -d $i ]; then
+		pushd $i
+		eval `grep 'convert_to_wav' *.txt | sed -e 's/convert_to_wav: //' -e 's/-w/-b 16/' -e 's/-s/-e signed/' -e 's/-u/-e unsigned/'`
+		PITCH=`echo "$i" | sed -e 's/^\([0-9]\+\).*$/\1/g'`
+		# From broadcast.py, eval'd in Python for consistent results
+		FRQ=`echo $PITCH | python2 -c "print(int(440.0 * 2**((int(raw_input())-69)/12.0)))"`
+		echo "WRITING $FRQ.wav"
+		[ -z "$FRQ" ] && echo "!!! EMPTY FILENAME?"
+		sox *.wav -r 44100 -c 1 -e signed -b 32 -t raw ../$FRQ.raw
+		popd
+	fi
+done
+
+rm drums.tar.bz2
+tar cjf drums.tar.bz2 *.raw