Created a section Record Microphone

[B33low]

Hello, I created a section describing how to record microphone to a wav file using sounddevice and scipy.

[gto76]

Thanks.

This looks interesting, but there is just no more space left because I limited the whole thing to 50 pages. There are at most three lines of space left on some pages.

I may make something like a second volume someday, where this could come in handy.