How to make a Spectrogram chart in Flutter

Question

I need to make spectrogram chart in flutter application.

Let me know how we can achieve the spectrogram chart in flutter application.

Here is the attached image of the chart which I need to achieve

Answer 1

Not an ideal solution, but because my project required tflite anyway, I ended up using tflite-models-audioset-yamnet. After some slight modifications to convert.py, I used this model in my flutter application to get the spectrogram arrays. At that point, I had to convert floats to uint8s, resize it to be an image shape, and used ui.decodeImageFromPixels to display it.

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(changes to the python function -- removed predictions from the yamnet_frames_tflite_model function and just call model.save('spectrogram.tflite') in the main before loading weights or converting the model)