Concert Hall Acoustics Calculator

Design a Schroeder QRD (Quadratic Residue Diffuser) panel by computing well depths, panel width, and effective diffusion bandwidth from design frequency and prime number.

Inputs

Design frequency (Hz)

Prime number (P)

Number of wells

Tab to move between fields

Results

Panel width (cm)

34.3

Individual well width (cm)4.9

Maximum well depth (cm)34.3

Lower diffusion limit (Hz)500

Upper diffusion limit (Hz)1,750

Unique well depths3

First well depth (cm)0

How to Use This Calculator

Enter Design frequency (Hz), Prime number (P), and Number of wells.
Review the Panel width (cm) result.
Use Individual well width (cm) and Maximum well depth (cm) to inform your decision.

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