2021-11-14 13:28:55 +00:00
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#!/bin/sh
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2021-11-17 14:56:16 +00:00
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# Show a frequence spectrogram using sox and timg
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# https://sound.stackexchange.com/questions/40226/show-the-differences-between-two-similar-audio-files-using-graphical-method
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case $1 in
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(-a) shift
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for arg; do $0 "$arg"; done
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;;
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(-d) shift
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diff="/tmp/diff-$1-$2.wav"
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ffmpeg -y -v warning -i "$1" "/tmp/$1.wav"
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ffmpeg -y -v warning -i "$2" "/tmp/$2.wav"
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sox -m -v 1 "/tmp/$1.wav" -v -1 "/tmp/$2.wav" "$diff"
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$0 "$diff"
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;;
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(*)
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out="${2:-/tmp/freq-$(basename "$1").png}"
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mkdir -p "$(dirname "$out")"
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sox "$1" -n spectrogram -o "$out"
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timg --title "$out"
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;;
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esac
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