What is the mel scale?

1. What is mel scale used for?
2. How do you calculate mel scale?
3. What is mel scale filter bank?
4. What does Mel spectrogram do?

What is mel scale used for?

The mel scale is a scale of pitches judged by listeners to be equal in distance one from another. The reference point between this scale and normal frequency measurement is defined by equating a 1000 Hz tone, 40 dB above the listener's threshold, with a pitch of 1000 mels.

How do you calculate mel scale?

The calculation is done using the formulae mel = 1/log(2) * (log(1 + (Hz/1000))) * 1000 where Hz is the frequency in Hz.

What is mel scale filter bank?

The Design Mel Filter Bank block outputs a frequency-domain auditory filter bank using the mel frequency scale. You can use a mel filter bank to decompose an audio signal into separate frequency bands in the mel frequency scale, which mimics the nonlinear human perception of sound.

What does Mel spectrogram do?

melSpectrogram applies a frequency-domain filter bank to audio signals that are windowed in time. You can get the center frequencies of the filters and the time instants corresponding to the analysis windows as the second and third output arguments from melSpectrogram .