What's New

MuirWave 1.0 — a complete underwater acoustic propagation tool for iPad, built for civilian marine-acoustics work: survey, environmental-impact assessment, and research.

• Full propagation engine — ray paths, transmission loss and a continuous sound field, computed from textbook ocean-acoustics physics.
• Convergence zones, bottom bounce & depth excess — the features acousticians actually read, detected and labelled automatically.
• Water-column view — the sound-speed profile and temperature/salinity structure at any pin.
• Continuous frequency — a log-scale slider from 10 Hz to 50 kHz.

• Measured layer depth — type the sonic layer depth from your bathythermograph and every prediction rebuilds through it; the ◆ solid-brass chip shows your observation is driving.
• Measured ambient noise — up to 12 spectrum-level points warp the modelled noise floor through what your display actually reads.
• Detection-threshold presets — honest DT by processing type (automated, spectrogram, broadband energy, cross-correlation), with a warning when preset and bandwidth disagree.
• Weak-layer flag — when the model's layer depth is a broad plateau rather than a sharp feature, the readout says so instead of faking precision.

• Impact ranges against recognised thresholds (NMFS 2024 / Southall 2019 for mammals, Popper et al. for fish), by hearing group and source type.
• Mitigation screening PRO — a dedicated panel for noise-abatement systems (bubble curtains, hydro-sound dampers, screens): the mitigated-vs-unmitigated impact ranges per hearing group, a frequency-dependent insertion-loss curve that shows where the abatement actually works, and operational measures (soft-start ramp, acoustic deterrent) — with the seal caveat handled honestly. Screening-grade, carried through to the methodology export.
• Regulator-ready methodology export PRO — a multi-page PDF documenting inputs, data sources, thresholds and results.

• Global coverage, offline — GEBCO bathymetry, WOA23 climatology and sediment data ship in the app; every prediction works with no connection.
• Live ocean & weather LIVE — real-time sound-speed, currents, wind and waves, with honest fallback to climatology when offline.
• High-resolution regional packs LIVE — sharper data for the areas you work.
• Full provenance — every result is traceable to a named, public-domain source.

• Interface Scale — three sizes (DENSE · STANDARD · LARGE) for the app's text, chips and panels, in Settings → Display. Bigger steps trade map area for readability — built for the Mac and larger iPads, applies instantly on every device.

This guide grows with the app. New features will appear here as they ship, and the rest of the guide is updated alongside them — so what you read always matches what you're using.