{"action":"created","issue":{"url":"https://api.github.com/repos/MTG/essentia/issues/487","repository_url":"https://api.github.com/repos/MTG/essentia","labels_url":"https://api.github.com/repos/MTG/essentia/issues/487/labels{/name}","comments_url":"https://api.github.com/repos/MTG/essentia/issues/487/comments","events_url":"https://api.github.com/repos/MTG/essentia/issues/487/events","html_url":"https://github.com/MTG/essentia/issues/487","id":184234182,"number":487,"title":"implement inverse 12 MFCCs for visualisation ","user":{"login":"georgid","id":5612394,"avatar_url":"https://avatars.githubusercontent.com/u/5612394?v=3","gravatar_id":"","url":"https://api.github.com/users/georgid","html_url":"https://github.com/georgid","followers_url":"https://api.github.com/users/georgid/followers","following_url":"https://api.github.com/users/georgid/following{/other_user}","gists_url":"https://api.github.com/users/georgid/gists{/gist_id}","starred_url":"https://api.github.com/users/georgid/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/georgid/subscriptions","organizations_url":"https://api.github.com/users/georgid/orgs","repos_url":"https://api.github.com/users/georgid/repos","events_url":"https://api.github.com/users/georgid/events{/privacy}","received_events_url":"https://api.github.com/users/georgid/received_events","type":"User","site_admin":false},"labels":[{"id":454318643,"url":"https://api.github.com/repos/MTG/essentia/labels/algorithms%20wishlist","name":"algorithms wishlist","color":"1d76db","default":false}],"state":"open","locked":false,"assignee":{"login":"pabloEntropia","id":16823825,"avatar_url":"https://avatars.githubusercontent.com/u/16823825?v=3","gravatar_id":"","url":"https://api.github.com/users/pabloEntropia","html_url":"https://github.com/pabloEntropia","followers_url":"https://api.github.com/users/pabloEntropia/followers","following_url":"https://api.github.com/users/pabloEntropia/following{/other_user}","gists_url":"https://api.github.com/users/pabloEntropia/gists{/gist_id}","starred_url":"https://api.github.com/users/pabloEntropia/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/pabloEntropia/subscriptions","organizations_url":"https://api.github.com/users/pabloEntropia/orgs","repos_url":"https://api.github.com/users/pabloEntropia/repos","events_url":"https://api.github.com/users/pabloEntropia/events{/privacy}","received_events_url":"https://api.github.com/users/pabloEntropia/received_events","type":"User","site_admin":false},"assignees":[{"login":"pabloEntropia","id":16823825,"avatar_url":"https://avatars.githubusercontent.com/u/16823825?v=3","gravatar_id":"","url":"https://api.github.com/users/pabloEntropia","html_url":"https://github.com/pabloEntropia","followers_url":"https://api.github.com/users/pabloEntropia/followers","following_url":"https://api.github.com/users/pabloEntropia/following{/other_user}","gists_url":"https://api.github.com/users/pabloEntropia/gists{/gist_id}","starred_url":"https://api.github.com/users/pabloEntropia/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/pabloEntropia/subscriptions","organizations_url":"https://api.github.com/users/pabloEntropia/orgs","repos_url":"https://api.github.com/users/pabloEntropia/repos","events_url":"https://api.github.com/users/pabloEntropia/events{/privacy}","received_events_url":"https://api.github.com/users/pabloEntropia/received_events","type":"User","site_admin":false}],"milestone":{"url":"https://api.github.com/repos/MTG/essentia/milestones/3","html_url":"https://github.com/MTG/essentia/milestone/3","labels_url":"https://api.github.com/repos/MTG/essentia/milestones/3/labels","id":499856,"number":3,"title":"future","description":"","creator":{"login":"dbogdanov","id":409668,"avatar_url":"https://avatars.githubusercontent.com/u/409668?v=3","gravatar_id":"","url":"https://api.github.com/users/dbogdanov","html_url":"https://github.com/dbogdanov","followers_url":"https://api.github.com/users/dbogdanov/followers","following_url":"https://api.github.com/users/dbogdanov/following{/other_user}","gists_url":"https://api.github.com/users/dbogdanov/gists{/gist_id}","starred_url":"https://api.github.com/users/dbogdanov/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/dbogdanov/subscriptions","organizations_url":"https://api.github.com/users/dbogdanov/orgs","repos_url":"https://api.github.com/users/dbogdanov/repos","events_url":"https://api.github.com/users/dbogdanov/events{/privacy}","received_events_url":"https://api.github.com/users/dbogdanov/received_events","type":"User","site_admin":false},"open_issues":49,"closed_issues":11,"state":"open","created_at":"2013-11-28T16:36:49Z","updated_at":"2016-12-21T11:33:18Z","due_on":null,"closed_at":null},"comments":3,"created_at":"2016-10-20T13:46:16Z","updated_at":"2016-12-21T18:13:21Z","closed_at":null,"body":"The first MFCCs are standard for describing singing voice timbre. The MFCC feature vector however does not represent visually well the singing voice. Instead, a common practice is to use for visualisation the inverted first some (12-15) MFCC coefficients to mel-bands domain.\r\nPort from the invmelfcc.m  as explained here http://labrosa.ee.columbia.edu/matlab/rastamat/\r\nor from python: \r\nhttps://github.com/avaitla/HenryVsRudolph/blob/master/Python/MFCC.py\r\n"},"comment":{"url":"https://api.github.com/repos/MTG/essentia/issues/comments/268598308","html_url":"https://github.com/MTG/essentia/issues/487#issuecomment-268598308","issue_url":"https://api.github.com/repos/MTG/essentia/issues/487","id":268598308,"user":{"login":"georgid","id":5612394,"avatar_url":"https://avatars.githubusercontent.com/u/5612394?v=3","gravatar_id":"","url":"https://api.github.com/users/georgid","html_url":"https://github.com/georgid","followers_url":"https://api.github.com/users/georgid/followers","following_url":"https://api.github.com/users/georgid/following{/other_user}","gists_url":"https://api.github.com/users/georgid/gists{/gist_id}","starred_url":"https://api.github.com/users/georgid/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/georgid/subscriptions","organizations_url":"https://api.github.com/users/georgid/orgs","repos_url":"https://api.github.com/users/georgid/repos","events_url":"https://api.github.com/users/georgid/events{/privacy}","received_events_url":"https://api.github.com/users/georgid/received_events","type":"User","site_admin":false},"created_at":"2016-12-21T18:13:21Z","updated_at":"2016-12-21T18:13:21Z","body":"@pabloEntropia \r\nOnce you are done, may you add in both in the documentation of InverseDCT and MFCC that inverseDCT can be used to compute smoothedMelBands in the following way: \r\n1) compute MFCC \r\n2) smoothedMelBands = inverseDCT(computed MFCC) "}}
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