White noise generators in Linux

1. cat /dev/urandom > /dev/dsp
2. Boodler (http://boodler.org) Very nice open-source soundscape tool. You can install number of packages with sound samples and then to run them simultaneously or one after another. You should read the lengthy instructions, but once you get it, it's quite simple actually.
3. Baudline - some I haven't yet managed to work for me, but it looks quite promising.
4. Audacity
5. Online generator: http://www.speechprivacysystems.com/white-noise/ .  You can use Waterfall, Wind, Static, Rain and Beach noises and to mix them for free.
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