Acoustics is a broad field that encompasses the study of sound, its generation, transmission, and reception. It includes:
* Sound propagation: How sound waves travel through different mediums, including air.
* Sound reflection and absorption: How sound waves interact with surfaces and materials.
* Sound quality: How different sounds are perceived by humans.
* Noise control: Reducing unwanted noise.
* Architectural acoustics: Designing spaces for optimal sound quality.
* Musical acoustics: The physics of musical instruments and sound.
So, while the study of sound waves in air is a specific part of acoustics, the field encompasses a much wider range of topics related to sound.