A female voice has higher frequencies than a male voice. So by just capturing any vowel you could split it into formants using fft and find out if it sounds female or male. A vowel is built up from different resonating frequencies called formants. This does not necessarily identify the speaker. But...

I would like to make a smart mirror for my fiance but I have a two questions. My first is, could I have it recognize her face/voice and display things such as weather, a feel good saying, or her schedule? If the previous question is possible, what would I need to do such a thing? I already have the ...