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Generate audio sample files with ffmpeg
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| # test1.wav | |
| ffmpeg -f lavfi -i "sine=frequency=1000:duration=5:r=48000" test1.wav | |
| # test2.wav | |
| ffmpeg -f lavfi -i sine=f=440:d=5 -f lavfi -i sine=f=880:d=5 -filter_complex "[0][1]amerge" test2.wav | |
| # test3.wav | |
| ffmpeg -f lavfi -i sine=f=440:d=5 -f lavfi -i anullsrc=d=5:cl=mono -f lavfi -i sine=f=880:d=5 -filter_complex "[0][1][2]concat=n=3:v=0:a=1" test3.wav | |
| # https://github.com/stryku/ffcms |
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