What does mean when we say mel scale reflects how humans hear musical tone [duplicate]

1. What is mel scale in audio?
2. What is the mel scale and how does it relate to pitch perception?
3. What is mel in mel spectrogram?
4. Why is mel scale important?

What is mel scale in audio?

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.

What is the mel scale and how does it relate to pitch perception?

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

What is mel in mel spectrogram?

As frequency increases, the interval, in hertz, between mel scale values (or simply mels) increases. The name mel derives from melody and indicates that the scale is based on the comparison between pitches. The mel spectrogram remaps the values in hertz to the mel scale.

Why is mel scale important?

The Mel Scale

We are better at detecting differences in lower frequencies than higher frequencies. For example, we can easily tell the difference between 500 and 1000 Hz, but we will hardly be able to tell a difference between 10,000 and 10,500 Hz, even though the distance between the two pairs are the same.