An acoustic mirror is a device used to reflect and focus sound waves, to provide early warning of incoming aircraft.

An acoustic pickup is used to amplify an acoustic guitar. Instead of amplifying an acoutic guitar's sound via a microphone, an acoustic pickup can be mounted on the guitar over the soundhole to provide sound amplification.

Acoustic foam is used to sound proof rooms. It is often used in musical rehearsal rooms or production studios but it can also be used in the home to provide a noise barrier.

There are a few places that someone could learn to play acoustic on a guitar. One could try local guitar or music stores that often offer acoustic lessons. Sometimes in these stores there are postings for people that provide private lessons from their home.

An acoustic guitarist is a person who plays the acoustic guitar.