- Your neighbor's dog is annoying, so you want to answer its barks back with another barking dog, as well as with an annoying sound (you may consider using it with some portable speakers).
- You want to company your dog while it's barking. Answer its barks with a specific sound, or with a voice asking him to stop.
- Your partner is a professional snorer and you are tired of whistling to let her/him stop.
- You want your phone to answer when you shout for it, maybe because you are used to misplace it?