A tool utilized in acoustics and audio engineering, this device segments the audible frequency spectrum into bands that are one-third of an octave wide. Each band represents a range of frequencies where the upper limit is approximately 26% greater than the lower limit. For instance, a center frequency of 1 kHz would define a band spanning roughly from 891 Hz to 1122 Hz. The calculations involved are essential for analyzing sound pressure levels across different frequency ranges.
This method of frequency analysis is vital for noise measurement, environmental assessments, and equipment design. It allows for a more detailed understanding of sound characteristics than broader octave bands, enabling precise identification and mitigation of problematic frequencies. Historically, this technique has been instrumental in developing quieter machinery, improving audio equipment performance, and establishing noise control regulations.
