: While dominated by low rumbles, farts also generate broadband frequency spectra that extend into the ultrasonic range (above 16 kHz).

: They often feature odd harmonics (e.g., 750 Hz and 1250 Hz), similar to the acoustic properties of a brass instrument like a trombone.

: Most human farts have a peak frequency between 200 Hz and 300 Hz .

Fart sounds generally occupy the lower frequency spectrum but possess complex harmonic structures: