mkdir /tmp/new
rm -f audio/mp3/*.s.* audio/mp3/*.bin
make audio/mp3/mp3_0_apply_window_float.bin
cp -r audio/mp3/mp3_0_apply_window_float.* /tmp/new

git reset HEAD~2 --hard
mkdir /tmp/old
rm -f audio/mp3/*.s.* audio/mp3/*.bin
make audio/mp3/mp3_0_apply_window_float.bin
cp -r audio/mp3/mp3_0_apply_window_float.* /tmp/old

diff -ur /tmp/old /tmp/new