{"action":"created","issue":{"url":"https://api.github.com/repos/MTG/essentia/issues/437","repository_url":"https://api.github.com/repos/MTG/essentia","labels_url":"https://api.github.com/repos/MTG/essentia/issues/437/labels{/name}","comments_url":"https://api.github.com/repos/MTG/essentia/issues/437/comments","events_url":"https://api.github.com/repos/MTG/essentia/issues/437/events","html_url":"https://github.com/MTG/essentia/issues/437","id":163718355,"number":437,"title":"RhythmTransform descriptor QA","user":{"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},"labels":[{"id":454318795,"url":"https://api.github.com/repos/MTG/essentia/labels/algorithms%20QA","name":"algorithms QA","color":"d93f0b","default":false}],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":{"url":"https://api.github.com/repos/MTG/essentia/milestones/3","html_url":"https://github.com/MTG/essentia/milestones/future","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":51,"closed_issues":7,"state":"open","created_at":"2013-11-28T16:36:49Z","updated_at":"2016-11-14T16:01:28Z","due_on":null,"closed_at":null},"comments":8,"created_at":"2016-07-04T17:37:21Z","updated_at":"2016-11-18T09:00:11Z","closed_at":null,"body":"RhythmTranform algorithm computes rhythm descriptors from Mel bands. The [original paper](http://mtg.upf.edu/node/424) specifies the computation of Mel bands and it is implemented in the [python example](https://github.com/MTG/essentia/blob/master/src/examples/tutorial/example_rhythmtransform.py).\n\nTesting this script with simple examples, there are detected periodicities due to octave errors which I am not sure should be there meanwhile sub-octave errors make sense.\n\nAn example with a 100 BPM [metronome click](http://metronomer.com/) (20th coefficient corresponds to 100 BPM):\n![rhythmtransform_example](https://cloud.githubusercontent.com/assets/409668/16567302/3fe1be92-421d-11e6-88f7-49d343bdbd3a.png)\n\nAn example of a 130 BPM [kick drum loop](http://freesound.org/people/--DeletedUser--/sounds/220538/) with what seems to be a correct behavior (26th coefficient):\n![rhythmtransform_example_good](https://cloud.githubusercontent.com/assets/409668/16567387/7bb66232-421e-11e6-9f5d-e5361822f484.png)\n"},"comment":{"url":"https://api.github.com/repos/MTG/essentia/issues/comments/261481141","html_url":"https://github.com/MTG/essentia/issues/437#issuecomment-261481141","issue_url":"https://api.github.com/repos/MTG/essentia/issues/437","id":261481141,"user":{"login":"ffont","id":478615,"avatar_url":"https://avatars.githubusercontent.com/u/478615?v=3","gravatar_id":"","url":"https://api.github.com/users/ffont","html_url":"https://github.com/ffont","followers_url":"https://api.github.com/users/ffont/followers","following_url":"https://api.github.com/users/ffont/following{/other_user}","gists_url":"https://api.github.com/users/ffont/gists{/gist_id}","starred_url":"https://api.github.com/users/ffont/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/ffont/subscriptions","organizations_url":"https://api.github.com/users/ffont/orgs","repos_url":"https://api.github.com/users/ffont/repos","events_url":"https://api.github.com/users/ffont/events{/privacy}","received_events_url":"https://api.github.com/users/ffont/received_events","type":"User","site_admin":false},"created_at":"2016-11-18T09:00:11Z","updated_at":"2016-11-18T09:00:11Z","body":"Ups, the results do not seem to be very encouraging hehe:\r\nhttps://github.com/ffont/ismir2016/blob/rhythm_transform/Tempo%20estimation%20results.ipynb"}}
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