Tables of letter symbols and abbreviations for quantities in the science and technology of acoustics are contained in this standard. Recommendations for their use are also provided. Specialties within acoustics that make use of the letter symbols and abbreviations within this standard include, but are not limited to: speech, hearing, music, noise control, vibration, shock, sonar, and transducers. Although remarks and limited short-form information are provided for many of the symbols and abbreviations contained in this standard, definitions and methods of calculating the various quantities are outside the scope of this standard.