Native installers bundle their own Java runtime — nothing else to install. Prefer not to install? The full analyzer also runs in your browser — try the web version.
Highlights
- FFT analyzer — THD, THD+N, IMD, SNR, ENOB, per-harmonic
readout, coherent averaging, selectable windows, and live
calibration (
.frc). - Ultra-low-distortion measurements — sub-ppm THD with a capable ADC/DAC (e.g. E1DA Cosmos), coherent averaging to pull the noise floor down.
- Oscilloscope — triggered time-domain view with Vpp/Vrms/period/frequency stats.
- Frequency response — log-sweep / multitone with deconvolution and calibration.
- Signal generator — sine, dual-tone (IMD), sweep, DDS.
- DAC pre-distortion calibration — a closed-loop wizard that iteratively cancels the converter's own harmonics (and dual-tone IMD), pushing the playback chain's distortion far below what the DAC produces alone.
- Notch-filter tuning — a live module for trimming a passive twin-T notch: a continuously looping sweep tracks the null in real time so you can walk it onto the target frequency, then de-embed the notch's response from the FFT.
- Multi-backend audio — WASAPI & WDM-KS (Windows), CoreAudio (macOS), JavaSound (Linux); high sample rates and 16/24/32-bit.
Measurement bench
Wiring the bench so the cabling doesn't inject its own noise — a Faraday cage, CAT.8 twisted pair with XLR connectors, single-point grounding, and the resulting induced-noise budget — is described on the measurement-bench page.
License
GNU Affero General Public License v3.0 — see LICENSE.