Power Spectrum Noise Calculation

[Molkree]

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]

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.