diff --git a/cutoff/README b/cutoff/README
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+Investigation of DMX sound length cutoffs.
+
+The DMX sound library seems to discard sound effects that are less
+than 49 samples in length.  A sample that is exactly 49 samples long
+will play, but the same effect cropped to 48 samples will not be
+played.
+
+Included here are notsilnt.lmp (49 samples long) and silent.lmp
+(identical, but 48 samples long). Rename to dspistol.lmp and run with
+doom2.exe -file dspistol.lmp to try out.
+
diff --git a/cutoff/notsilnt.lmp b/cutoff/notsilnt.lmp
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diff --git a/cutoff/silent.lmp b/cutoff/silent.lmp
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