SBIR Simulator (Speaker Boundary Interference Response)

What is it for? Calculates cancellation (null) and reinforcement peak frequencies resulting from speaker distance to rear and side walls, displays in 3D.

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Room and Setup Information

Room Length (cm) Room Width (cm)

Which wall does the speaker's rear face?

Speaker Distance to Rear Wall (cm) Speaker Distance to Side Wall (cm)

Driver Height (cm) Ear Height (cm) Listening Distance (cm)

Drag with mouse to rotate, scroll to zoom. ● Speaker, ● Listening position. Dashed lines show measured distances (cm).

Cancellation (Null) and Reinforcement (Peak) Frequencies

Surface	1st Null (Hz)	1st Peak (Hz)	Assessment

Frequency Map (20–500 Hz)

Rear Wall Side Wall Floor Bounce

Curious about the wavelengths corresponding to these cancellation frequencies? Sound Wavelength Calculator →

First Reflection Point Calculator

Calculates first reflection points on side walls, ceiling and floor; shows the exact placement of acoustic panels.

RT60 and Acoustic Panel Requirement Calculator

Calculates your room's reverberation time (RT60) using the Sabine formula and shows how many m² of acoustic panels you need to reach your…

Room Mode (Room Modes) Calculator

Calculates and displays in 3D axial, tangential, and oblique room modes (resonance frequencies) based on your room dimensions.