top of page

New Infographic on Underwater Sound Terminology

In underwater acoustics, 'source level' and 'sound pressure level' are expressed in decibels (dB), but represent different physical quantities whose values are not comparable. Our new infographic shines a light on these sometimes confused terms using light as a helpful analogy. For more details on this subject, see Ainslie, Halvorsen and Robinson (2022), A Terminology Standard for Underwater Acoustics and the Benefits of International Standardization.

View, download, or share the infographic below or at

Sound Terminology Infographic
Download PDF • 168KB


Recent Posts

See All


bottom of page