charmparticle
coderofsalvation
/ loopcrossfade
Last active
June 1, 2022 05:32
bashscript which turns an wavfile into a seamless loopable wavfile (using a crossfade technique). The faderatio indicates the length of the fade used, the higher the number the shorter the fade.
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| # makes a audiofile to loop itself (seamless by using a crossfade trick) (needs sox audio utilities) | |
| # @dependancy sox | |
| # Usage: ./loopcrossfade <input.wav> <faderatio> [outputdir] | |
| # | |
| loopcrossfade(){ | |
| input="$1"; faderatio="$2"; outputdir="$3"; tmpinput="/tmp/$(basename "$input").loopcrossfade.wav" | |
| [[ ! -f "$input" ]] && echo "cannot find $1" && exit 1 | |
| valid=$(echo "$faderatio > 1.99" | bc -l ); | |
| (( $valid == 0 )) && echo "faderatio should be 2.0 or bigger" && exit 1 |