diff --git a/scripts/m4a-to-wav.sh b/scripts/m4a-to-wav.sh
new file mode 100644
index 0000000000..f1d1900db3
--- /dev/null
+++ b/scripts/m4a-to-wav.sh
@@ -0,0 +1,8 @@
+for file in *.m4a; do name=`echo $file | sed "s/\ /\_/g" | sed "s/.m4a//"`; \
+    echo "Convert m4a $file to $name.wav"; faad -o $name.wav "$file" > /dev/null 2>&1; \
+    for rate in 8000 16000 32000 48000; do mkdir -p $rate; \
+    	echo "Creating $rate kHz -> $rate/$name.wav"; \
+    	sox $name.wav -c 1 -r $rate $rate/$name.wav vol 0.06; \
+    done; \
+    rm -f *.wav; \
+done;