Ok – we see, you are interested in AI without … nearly anything.
Solution ( this time : AI object recognition with super-low-cost pi-zero) :
(The 12 QPU dual issue Processing Units in our GPU are used. Here no additional hardware, besides the cam and the sdhc is required)
If you are interested in voice recognition, the 12 QPU vector processing units can be used in much the same way. Results may be communicated via wifi to the outside world
There is lot of open source ai software/literature to do that.
Have fun with your homework.
please note : this is not for the beginner .