【Analytics】Mel Spectrogram explanation

Assuming you understand normal spectrograms.

Mel spectrogram is adjusted spectrogram to be easy for humans to understand.

It was made by applying some mel-band filters.

Simply put, it is an enhancement of the low frequency components of the spectrogram.

The process to create Mel Spectrogram contains transform to Mel scale and Hz scale.

Show both formula.

・To Mel scale

$m = 2595 \dot log(1 + \dfrac{f}{700})$

・To Hz scale

$f = 700(10^{m/2575}) - 1$

f: …

analytics components create easy filters humans low normal process scale spectrogram