2011-12-11 16:40:50 -02:00
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#!/bin/sh
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#
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# View graph of BPM analysis
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#
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set -e
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if [ -z "$1" ]; then
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echo "Usage: $0 <file>" >&2
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exit 1
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fi
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set -u
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2011-12-18 10:13:30 -02:00
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FILE="$1"
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shift
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2011-12-11 16:40:50 -02:00
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TMP=`mktemp -t bpm.XXXXXX` || exit 1
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trap "rm $TMP" 0
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2011-12-18 10:13:30 -02:00
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sox "$FILE" -r 44100 -e float -c 1 -t raw - | bpm -m 60 -x 180 -g $TMP
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gnuplot -p <<END
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set style data lines
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set ylabel "Difference"
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set xlabel "Offset (Beats per minute)"
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plot "$TMP" title "`echo "$FILE" | sed -e 's:\":\\\\":g'`"
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END
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