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diff --git a/wavplay_am824/test/48k_2ch_16_tones.ac3.wav b/wavplay_am824/test/48k_2ch_16_tones.ac3.wav
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diff --git a/wavplay_am824/test/48k_2ch_24_tones.wav b/wavplay_am824/test/48k_2ch_24_tones.wav
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diff --git a/wavplay_am824/test/48k_2ch_float_tones.wav b/wavplay_am824/test/48k_2ch_float_tones.wav
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diff --git a/wavplay_am824/test/create_test_files.sh b/wavplay_am824/test/create_test_files.sh
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+#!/bin/bash
+sox -V -r 48000 -n -b 16 -c 2 48k_2ch_16_tones.wav synth 30 sin 1000 sin 100 vol -10dB
+sox -V -r 48000 -n -b 24 -c 2 48k_2ch_24_tones.wav synth 30 sin 1000 sin 100 vol -10dB
+sox -V -r 44100 -n -b 16 -c 2 44k1_2ch_16_tones.wav synth 30 sin 1000 sin 100 vol -10dB
+sox -V -r 48000 -n -b 32 -e floating-point -c 2 48k_2ch_float_tones.wav synth 30 sin 1000 sin 100 vol -10dB
+ddp_encoder -a7 -i48k_2ch_24_tones.wav -md1 -dn31 -+d640 -o48k_2ch_24_tones.ac3
+# The change from 24bit to 16bit below is not a typo. As a result of the encoding process the bitstream is 16bit
+# although the encoded audio was in 24bit format
+smpte -i48k_2ch_24_tones.ac3 -o48k_2ch_16_tones.ac3.wav
+rm -f 48k_2ch_24_tones.ac3
\ No newline at end of file