Music Glossary: audio-theory-and-acoustics category [Page 3]

Porous absorbers become effective near frequencies where thickness ≈ λ/4 (with air-gap considered). more

Sound energy bouncing off surfaces; timing/angle shape imaging and comb filtering. more

Decorrelated dense field from many reflections after the direct sound; defines room size/character. more

DSP equalization and timing applied to compensate measured room/speaker response at the listening position. more

Resonances caused by standing waves between boundaries, reinforcing/attenuating certain frequencies. more

High-isolation build using fully decoupled inner shell from the outer structure. more

Time for reverberant sound to decay 60 dB; common measure of room reverberation. more

Classic formula estimating RT60 from room volume and total absorption (A = αS). more

Number of digital samples per second (e.g., 44.1, 48, 96 kHz); sets the upper bandwidth limit. more

LF cancellations/boosts from interference between direct speaker output and boundary reflections. more

Boundary between modal region and diffuse field; above it, statistical reverb models apply. more

Level difference between desired signal and noise floor, typically in dB. more

Longitudinal pressure variation traveling through a medium (air, liquid, solid) characterized by frequency, wavelength, and amplitude. more

Acoustic level referenced to 20 µPa in air; typical measures include dB SPL, Leq, and peak. more

Perceived placement/width/depth between loudspeakers, influenced by timing, level, and reflection control. more

Total Harmonic Distortion plus Noise: measure of nonlinear distortion and noise combined. more

Reduction of sound through partitions; STC summarizes mid-band isolation performance. more

Distance a wave travels in one cycle; λ = c / f where c is speed of sound. more