Mercurial > hg > mirex2013
changeset 30:102bfb16f17f abstract
tidied audio key detection section
| author | luisf <luis.figueira@eecs.qmul.ac.uk> |
|---|---|
| date | Fri, 06 Sep 2013 16:26:29 +0100 |
| parents | 473d83d0865c |
| children | 929391dcf778 |
| files | vamp-plugins_abstract/qmvamp-mirex2013.tex |
| diffstat | 1 files changed, 1 insertions(+), 13 deletions(-) [+] |
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--- a/vamp-plugins_abstract/qmvamp-mirex2013.tex Fri Sep 06 16:17:23 2013 +0100 +++ b/vamp-plugins_abstract/qmvamp-mirex2013.tex Fri Sep 06 16:26:29 2013 +0100 @@ -57,21 +57,9 @@ The Tempo and Beat Tracker Vamp plugin was written by Matthew Davies and Christian Landone. \section{Audio Key Detection} - -[Need reference] - The Key Detector VAMP plugin anlyses a single channel of audio and continuously estimates the key of the music by comparing the degree to which a block-by-block chromagram correlates to the stored key profiles for each major and minor key. - -The correlation method \cite{krumhansl1990, gomez2006} - -to, it's a standard technique these days. Krumhansl did it very early on with symbolic data [C. L. Krumhansl. Cognitive Foundations of Musical Pitch. Oxford University Press, 1990 - see p.~37]. Gómez was one of the first to do it with audio using chromagrams, but not using the same profiles as I did [ - -Chromagrams for profile-based chord estimation (not key estimation, and not using the correlation) came earlier, and are generally attributed to Fujishima [Takuya Fujishima. Realtime chord recognition of musical sound: a system using common lisp music. In Proceedings of the International Computer Music Conference (ICMC), pages 464–467, Beijing, 1999]. - -Maybe refer to both Krumhansl and Gómez - I used Krunhansl's method adapted for audio, in a similar fashion to Gómez, but using different tone profiles that were derived from recordings of Bach Preludes and Fugues. - -The key profiles are drawn from analysis of Book I of the Well Tempered Klavier by J S Bach, recorded at A=440 equal temperament. +This plugin uses the correlation method described in \cite{krumhansl1990} and \cite{gomez2006}, but using different tone profiles. The key profiles used in this implementation are drawn from analysis of Book I of the Well Tempered Klavier by J S Bach, recorded at A=440 equal temperament, as described in \cite{noland2007signal}. The Key Detector Vamp plugin was written by Katy Noland and Christian Landone.