Tone Generator

Generate a pure tone at any frequency. Great for testing speaker response or your hearing range.

RT60 Calculator

RT60 is the time for sound to decay by 60 dB — the most important measure of room acoustics. Uses the Sabine formula, calculated in Python.

RT60 = 0.161 × V / A

Room Mode Calculator

Rectangular rooms have natural resonance frequencies where bass builds up. Find the first axial modes for your room — calculated in Python.

dB Level Combiner

Sound levels don't add linearly — 60 dB + 60 dB = 63 dB, not 120 dB. Enter up to 4 sources.

L_total = 10 × log₁₀(Σ 10^(Lᵢ/10))