support mel scaling - Githubissues

swharden / Spectrogram

.NET library for creating spectrograms (visual representations of frequency spectrum over time)

https://nuget.org/packages/Spectrogram

MIT License

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Closed swharden closed 4 years ago

swharden commented 4 years ago

add a method to Spectrogram which returns a mel-scaled 2D array

swharden commented 4 years ago

wrote some working code, but still not sure where to put it

swharden commented 4 years ago

You can now create a Mel spectrogram like this:

Bitmap bmp = spec.GetBitmapMel(melSizePoints: 250, intensity: 4, dB: true);
bmp.Save("halMel.png", ImageFormat.Png);

Cropped Linear Scale (0-1kHz)	Full Linear Scale (0-22 kHz)	Mel Scale (0-22 kHz)