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Comment by MithrilTuxedo | Hacker News Reader

cat /dev/urandom | sox -traw -r44100 -b16 -e unsigned-integer - -tcoreaudio synth pinknoise band -n 1400 200 tremolo 40 .1 gain 8

I wanted to check it out. Installed sox on Ubuntu 17.04 and it's not working

    sox FAIL formats: no handler for given file type `coreaudio'

You need to replace coreaudio with pulseaudio, try this instead:

    cat /dev/urandom | sox -traw -r44100 -b16 -e unsigned-integer - -tpulseaudio synth pinknoise band -n 1400 200 tremolo 40 .1 gain 8