PRAXIS SCIENCE LAB / ANDROID

Spectrum Lab

Explore live audio spectra, spectrograms and local measurement sessions.

In testing Not yet available on Google Play.

See sound as a live frequency spectrum and scrolling spectrogram. Inspect the dominant frequency, digital RMS level, minimum and maximum levels, and clipping.

Save local sessions with numerical measurements and export your data as CSV or JSON. Advanced tools include spectrum comparisons, notes, octave and third-octave bands, PDF reports, screen-off monitoring and local threshold alerts.

Spectrum Lab is the evaluation edition of Praxis Spectrum, with advanced tools enabled and no advertising or purchases. The separate Standard edition is designed for free use with advertising and an optional Pro subscription; commercial purchasing is not configured. Neither edition is available on Google Play yet.

Language

English, Romanian and Spanish.

Using the app

Android 8 or later. This is not a certified sound level meter. Digital dBFS readings are not acoustic dB SPL. An optional calibration offset is only an estimate; microphone hardware and phone processing affect results. No A/C weighting is provided. Foreground sessions stop when the app is no longer visible; background monitoring must be started explicitly. Android battery restrictions can interrupt monitoring.

Praxis Science Lab is the publishing brand used by Traian Anghel. For support or privacy questions, email traiananghel@gmail.com. Include the app name and version. Do not send passwords, medical records, private recordings or other sensitive information.