diff --git a/audio/audio_filters/Mono.dsp b/audio/audio_filters/Mono.dsp
new file mode 100644
index 0000000000..bef96cfe02
--- /dev/null
+++ b/audio/audio_filters/Mono.dsp
@@ -0,0 +1,12 @@
+filters = 1
+filter0 = panning
+
+# Gains are linear.
+
+# Stereo Mono:
+ panning_left_mix = "0.5 0.5"
+ panning_right_mix = "0.5 0.5"
+
+# Mono on one speaker:
+# panning_left_mix = "0.5 0.5"
+# panning_right_mix = "0.0 0.0"