chp1: deleted a sentence saying the exact same as the next. chp2: some w...

chp1: deleted a sentence saying the exact same as the next
chp2: some write error. 
chp3: moved a discussion of the knowles mic to chapther 6. 
chp4: dublicate statement. 
chp6: added the discussion on the knowles mic, and rearranged the ingress to be cronological