Project with Arduino & DSP kit

Can anyone suggest a project with both arduino & DSP involved?
I tried motion tracking where a camera always points to some target.
Can anyone tell other than this?

Arduino synth with a software low pass filter ?

Duane B

Its for my academics. So i prefer something which can be used in daily life.

Audio Spectrum analyzer using FFT?

Deep notch 60 hz hum filter?

What is the DSP kit?