Acoustic guides and tutorials
In-depth acoustic engineering tutorials backed by physics calculations, room mode solvers, and 3D simulations.
Home Studio Acoustic Treatment Guide
How to treat a home studio: where acoustic panels, corner bass traps and ceiling clouds go for recording and mixing.
Home Theater Acoustic Panels Guide
Acoustic panels for home theaters: dialogue clarity, surround and Atmos imaging, rear wall diffusion and bass control.
Glossary
- Room Modes (Standing Waves)
Natural acoustic standing waves formed by sound reflecting between parallel room boundaries.
- RT60 (Reverberation Time)
The time required for sound pressure level to decay by 60 decibels after a sound stops.
- First Reflection Point
The boundary coordinate where speaker sound reflects directly to listener ears within 20 ms.
- Comb Filtering
An acoustic interference artifact created when direct sound combines with a delayed reflection.
- Schroeder Frequency (f_s)
The crossover frequency separating low-frequency room modes from high-frequency specular sound.
- Flutter Echo
A high-frequency ringing echo caused by sound bouncing repeatedly between parallel hard walls.
- Bass Trap vs Acoustic Panel
Difference between thick low-frequency absorbers and thin mid-high acoustic panels.
- Absorption vs Diffusion
Removing sound energy versus scattering sound energy evenly across time and space.