When you see the microphone image, speak what you want
say "comma," "period," "question mark," "exclamation mark," or
"exclamation point" to enter punctuation.
When you pause, what you spoke is transcribed by the speech-
recognition service and entered in the text field, underlined.
You can touch the delete key to erase the underlined text. if you
start typing or entering more text by speaking, the underline
To improve processing of your voice input, Google may record a
few seconds of ambient background noise in temporary memory
at any time. This recording remains on the device only fleetingly
and is not sent to Google.
Nexus 7 Guidebook
To change your tablet's speech settings, go to Set-
tings > Personal > Language & input.
eNTeR ANd ediT TexT