40 lines
844 B
Bash
Executable File
40 lines
844 B
Bash
Executable File
#!/bin/bash
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set -e
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# SoX Resampler Library Copyright (c) 2007-15 robs@users.sourceforge.net
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# Licence for this file: LGPL v2.1 See LICENCE for details.
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# Tests varying bandwidth.
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tool=./3-options-input-fn
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spec="spectrogram -z120 -Z-20 -wd -ho"
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ext=f32; e=0
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rate1=48000
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rate2=44100
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for n in 1 2; do
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rate1n=`expr $rate1 / 2`
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#sox -r $rate1 -n 0.$ext synth 1s sq pad .03 .03 gain -1
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sox -r $rate1 -n 0.$ext synth 8 sin 0:$rate1n gain -1
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for q in `seq 79 5 99`; do
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f=bw1-$rate2-p`printf %02u $q`
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$tool $rate1 $rate2 1 $e $e 4 0 $q < 0.$ext | sox -c1 -r$rate2 -t $ext - -n $spec $f.png
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done
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for q in `seq 79 5 99`; do
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f=bw2-$rate2-p`printf %02u $q`
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$tool $rate1 $rate2 1 $e $e 4 0 $q `expr 200 - $q` < 0.$ext | sox -c1 -r$rate2 -t $ext - -n $spec $f.png
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done
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r=$rate1; rate1=$rate2; rate2=$r
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done
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rm 0.$ext
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