Muuttolintujen Kevät - Automatic Bird Sound Classifier - Patrik Lauha

Описание: Muuttolintujen Kevät (“Spring of migratory birds”) is a mobile application –based citizen science campaign where citizens collect bird observations with help of an automated bird sound classifier of Finnish birds.

Since spring 2023 the method has attracted 300,000 participants who have uploaded more than 14 million recordings containing 37 million bird observations.

The recordings made by citizen scientists are analyzed with an AI identification model, more specifically a convolutional neural network (CNN). The CNN model has been trained in Python with Tensorflow to identify the vocalizations of all 263 Finnish bird species.

The model processes data by converting the audio signal to spectrogram image via Fourier transform, splitting the input spectrogram to slightly overlapping 3 second clips, and predicting the probability of presence for each species for every 3 second frame.

Keynote by Patrik Lauha

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