[quote="johnboyman, post:10, topic:927973"]
Can I Hook up the output to a speaker. [/quote]
You can directly drive a piezo transducer but you probably won't get enough volume. Regular speakers require an amplifier, or powered computer speakers have a built-in amplifier.
Basically, each speaker needs its own amplifier, and of course a stereo amplifier can drive a pair of speakers. Depending on the amplifier & speakers you may be able to double-up on the speakers. i.e. Two 8-Ohm speakers in parallel is 4-Ohms, etc., and if the impedance is too low you'll burn-up the amplifier.
For "experimental purposes" you can generate a white-noise or pink-noise file with Audacity and then you can play it in a loop on your computer or phone. You can build a dedicated noise generator later.