[TMDSLCDK138] OMAP-L138 Development Kit for Active Noise Cancellation application

Hi everybody,

I want to set up a system for Active Noise Cancellation. The very first application is the classical 1D duct where a known plane wave is cancelled.

For this purpose, it seems that the DSP board OMAP-L138 DSP+ARM9 Development Kit is one of the best low-cost choice.
Do you have any suggestion about which microphones and which speakers are better to use? Do I need preamplifiers/amplifiers or they are integrated in the DSP board?

Thank you in advance.

Anwar K.