> * Perhaps white noise on headphones if you need it, timer on your laptop or phone If you have sox[0] installed, just run play -n synth 20:00 pinknoise

> * Perhaps white noise on headphones if you need it, timer on your laptop or phone If you have sox[0] installed, just run play -n synth 20:00 pinknoise (or whitenoise if it suits your environment or preference better). [0]: http://sox.sf.net/ http://sox.sf.net/