specshow representation

Description

I want to know the exact meaning of what the tonnetz specshow diagram indicates https://librosa.github.io/librosa/generated/librosa.feature.tonnetz.html

Steps/Code to Reproduce

Expected Results

Actual Results

Versions

[lostanlen]

Hello @rohan7797, This is explained in the documentation at the link you pointed.

tonnetz : np.ndarray [shape(6, t)]
    Tonal centroid features for each frame.
    Tonnetz dimensions:

            0: Fifth x-axis
            1: Fifth y-axis
            2: Minor x-axis
            3: Minor y-axis
            4: Major x-axis
            5: Major y-axis

If you are not already familiar with tonal centroid features, I recommend you read the paper of Harte et al. 2006 http://www.ofai.at/~martin.gasser/papers/oefai-tr-2006-13.pdf

[lostanlen]

@rohan7797 i don’t understand the question “how does it signify the change in harmonics”. Equation 3 of the paper i shared above describes precisely how these features are computed, and what their positive and negative values indicate. I invite you to reach out to Christopher Harte for further clarifications. In any case, i don’t see this issue as requiring a necessary change to the codebase of librosa, so i propose to close it.