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| 1 | +#!/bin/sh | |
| 2 | + | |
| 3 | +# This script, as used at http://language101.com, shows using several | |
| 4 | +# effects in combination to normalise and trim voice recordings that | |
| 5 | +# may have been recorded using different microphones, with differing | |
| 6 | +# background noise etc. | |
| 7 | + | |
| 8 | +SOX=../src/sox | |
| 9 | + | |
| 10 | +if [ $# -lt 2 ]; then | |
| 11 | + echo "Usage: $0 infile outfile" | |
| 12 | + exit 1 | |
| 13 | +fi | |
| 14 | + | |
| 15 | +$SOX "$1" "$2" \ | |
| 16 | + remix - \ | |
| 17 | + highpass 100 \ | |
| 18 | + norm \ | |
| 19 | + compand 0.05,0.2 6:-54,-90,-36,-36,-24,-24,0,-12 0 -90 0.1 \ | |
| 20 | + vad -T 0.6 -p 0.2 -t 5 \ | |
| 21 | + fade 0.1 \ | |
| 22 | + reverse \ | |
| 23 | + vad -T 0.6 -p 0.2 -t 5 \ | |
| 24 | + fade 0.1 \ | |
| 25 | + reverse \ | |
| 26 | + norm -0.5 | |