need help in deciding a DSP solution

I am searching for a DSP board ( TI TMS320C6x series of processor),
which would take 21 channels of analog EEG signals convert it to
digital with a sampling rate of 256Hz and process (such as doing
wavelet transformation)
individually and parallelly of  each individual channel.
please suggest me a DSP board or plan to implement
thanks

Also, consider using few simple, networked 8/16-channel boards for your
task.

Regards,
Yuri