Scientific approach
Efficient acoustic analysis with expert interpretation at the centre.
Halicho Marine uses a flexible, evidence-led workflow. Automated tools may accelerate screening, but specialist review and scientific caution remain essential.
Workflow
From recordings to ecological evidence.
Hydrophone data
Long-duration recordings from monitoring projects, field studies or partner systems.
Screening
Signal processing and semi-automated methods identify candidate seal vocal activity.
Verification
Expert review of spectrograms and audio separates true calls from noise and ambiguity.
Classification
Calls are assigned to repertoire categories or flagged where classification is uncertain.
Analysis
Temporal, acoustic and environmental patterns are quantified using appropriate statistics.
Interpretation
Ecological meaning is discussed cautiously, with clear distinction between evidence and hypothesis.
Reporting
Outputs are structured for monitoring programmes, environmental assessment and research use.
Decision support
Findings are translated into practical evidence for project teams and stakeholders.
Spectrogram review
Making acoustic structure visible.
Seal vocalisations are reviewed through both audio and spectrograms. This allows call structure, ambiguity and environmental noise context to be assessed transparently.
Acoustic visualisation
Spectrogram examples help communicate why expert review remains central to acoustic interpretation.
Machine learning
A tool, not the product.
Machine learning can help manage large acoustic datasets, but the scientific value comes from knowing what to detect, how to review it and how to interpret uncertainty.
Halicho Marine can support computational workflows including detector evaluation, active review, annotation strategy and model benchmarking. Specific tools are selected according to project needs, data access, collaboration arrangements and appropriate intellectual property boundaries.
Behavioural insight is presented carefully. Underwater seal call-to-behaviour relationships remain unresolved, so interpretation is evidence-informed rather than overclaimed.