Play a sweep through the amplifier you already own and get a calibrated frequency response, room modes, and RT60, from your phone and a USB microphone.
The mic's calibration file is applied and the impulse response is gated to drop room reflections.
Repeatable test plans with triplicate agreement checks, so you know the measurement is good.
RT60, clarity, and mode peaks show how the room colors what you hear.
Overlay measurements, compare difference curves, and export FRD, CSV, WAV, JSON, PNG, or PDF.
Every screen runs in your browser against a simulated speaker. No hardware needed.
A Dayton Audio iMM-6C plugs into your phone and acts as both the sweep output and the recording mic.
Pick a test plan or make your own, then play a logarithmic sweep through your amplifier and speaker.
Review frequency response, room modes, and RT60. Overlay measurements and export your results.
No. The browser demo runs against a simulated speaker, so every screen can be tried without hardware at psc-app.rkroll.com.
A Dayton Audio iMM-6C calibrated USB microphone. Its DAC plays the sweep into your amplifier and its mic records the result.
Comparative, not laboratory-grade. Absolute dB SPL is not claimed; triplicate agreement checks tell you when a measurement is repeatable.
On-device. There is no account and measurements are not uploaded anywhere. This site collects nothing and runs no analytics.