Simple Explanation

A way of dividing sound frequencies into smaller chunks so we can analyze or adjust them more precisely.

Concise Technical Definition

A 1/3-octave band splits the frequency spectrum into intervals that are one-third the width of an octave, allowing more detailed frequency analysis.

Layman-Friendly Analogy

Like zooming in on a map—1/3-octave bands let you see the sound landscape in finer detail than full octaves.

Industry Usage Summary

1/3-octave bands are commonly used in equalizers (EQs), room acoustics analysis, and environmental noise monitoring to give more precise control or measurement across the frequency range.

Engineering Shortcut

Frequency band 1/3 the width of an octave; used in filters and analysis for finer frequency resolution.

Full Technical Explanation

A 1/3-octave band divides the audible frequency spectrum into narrower segments, each spanning one-third of an octave. This finer resolution enables more accurate measurement and control of audio content. Each band is centered on a standard frequency (e.g., 100 Hz, 125 Hz, 160 Hz, etc.) and is spaced so that three bands together span a doubling in frequency. This is essential for detailed acoustic analysis and professional audio system tuning.