Answer: taptap

AnswerCrossword Clue
TAPTAP

[Is this mike on?]

TAPTAP

Typing sound

TAPTAP

Door knocks.

TAPTAP
Woodpecker sound effect.
TAPTAP
Typist's sound
TAPTAPSound of repeated light hitting
TAPTAPSound at the door
TAPTAP[Is this thing on?]