Body: "Acoustical engineering" is Acoustical engineering is the study of the science of sound and vibration.
aeroacoustics, audio signal processing, bioacoustics, environmental noise are a few categories of "Acoustical engineering".
reduce unwanted noise, use ultrasound in medicine, design concert halls is some of the cause to investigate "Acoustical engineering".
A few scholars of "Acoustical engineering" include Tony Bongiovi, Harris Jayaraj, Todd Rundgren.