Phasesfrom

Phasesfrom is a software library and command-line utility designed to extract and analyze instantaneous phase information from time-series and waveform data. It provides tools for computing phase via methods such as the Hilbert transform, short-time Fourier transform (STFT), and continuous wavelet transform (CWT), and includes routines for phase unwrapping, smoothing, and visualization.

Developed to support research and engineering workflows in signal processing, seismology, biomedical engineering, and audio analysis, Phasesfrom emphasizes modularity and reproducibility. It supports multiple input formats, including common audio, seismic, and numerical array files, and can be used as a standalone tool or integrated into larger data pipelines through language bindings and a documented API.

Key features include multi-method phase estimation, noise-aware filtering, batch processing, and compatibility with real-time streaming data. The library implements standard algorithms for phase extraction and offers configurable parameters for windowing, scale selection, and unwrapping thresholds, enabling users to balance temporal and spectral resolution.

Phasesfrom is distributed under a permissive open-source license and maintained via a public repository where users can report issues, request features, and contribute code. Typical applications include waveform alignment, phase-based filtering, time-delay estimation, and analysis of oscillatory components in physiological signals. The project documentation provides examples, performance notes, and guidance on selecting appropriate phase-estimation methods for different signal characteristics.