Explanation about audio analysis timbre functions

[paulcayon]

Hi,

I have read the documentation of your API, and feel your timbre feel on your audio analysis very interesting. I have searched for information on the internet about an explanation of the interpretation of the 12 basis functions and do not found any information. On the old GitHub repository, there is an issue about that (https://github.com/spotify/web-api/issues/947), but the two main links about the documentation are broken (

https://www.researchgate.net/post/Is_there_any_documentation_about_Spotifys_audio_features

http://docs.echonest.com.s3-website-us-east-1.amazonaws.com/_static/AnalyzeDocumentation.pdf

). Can you provide to the community new links with these documents or any explanation of the meaning of the functions ?