White and Pink Noise Generators

    sox -t sl -r 44100 -c 2 /dev/zero           -r 44100 -c 2 -w whitemoise.wav           synth 1:00 $1 vol 0.8
    lame whitenoise.wav whitenoise.mp3

    sox -t sl -r 44100 -c 2 /dev/zero           -r 44100 -c 2 -w pinkmoise.wav           synth 1:00 $1 vol 0.8
    lame pinknoise.wav pinknoise.mp3