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orcasound / orca-action-workflow

Github actions to automate Orcasound tasks.
MIT License
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Power Spectrum Noise Calculation #10

Open Molkree opened 3 years ago

Molkree commented 3 years ago

To roughly determine if there were loud noises in the recording? Over what timeframe? 3 sec? 5 sec? Whole file? What are the outputs?

Is it the same as the "Noise Level" from the doc? https://github.com/orcasound/orca-noise-analysis

valentina-s commented 2 years ago

Simple calculation would be to add the spectrogram values from all frequency bins: total power spectrum per unit time, and convert to dB values. More elaborate calculation could be to create a few frequency bands that could capture different types of sounds presents: for example, in this article uses Decidecade Bands to summarize patterns of ocean sounds(vessels, marine mammals) over a long period of time.