changeset 58:254229761896

Updates for 2014, and new abstracts

--- a/.hgignore	Thu Sep 04 13:59:00 2014 +0100
+++ b/.hgignore	Thu Sep 04 15:42:08 2014 +0100
@@ -2,3 +2,8 @@
 *~
 *.out
 *.csv
+*.log
+*.pdf
+*.aux
+*.bbl
+*.blg

--- a/audio_beat_tracking/beatroot-vamp/README.txt	Thu Sep 04 13:59:00 2014 +0100
+++ b/audio_beat_tracking/beatroot-vamp/README.txt	Thu Sep 04 15:42:08 2014 +0100
@@ -1,5 +1,5 @@
 #
-# MIREX 2013 submission
+# MIREX 2014 submission
 #
 # Audio Beat Tracking
 # BeatRoot Vamp plugin by Simon Dixon and Chris Cannam
@@ -14,6 +14,8 @@
 - Sonic Annotator v1.0
   http://code.soundsoftware.ac.uk/projects/sonic-annotator/files
 
+- GNU libc 2.15 or newer, GNU libstdc++ 3.4.15 or newer
+
 - Typical Unix/GNU shell commands
 
 # How to run

--- a/audio_beat_tracking/qm-tempotracker/README.txt	Thu Sep 04 13:59:00 2014 +0100
+++ b/audio_beat_tracking/qm-tempotracker/README.txt	Thu Sep 04 15:42:08 2014 +0100
@@ -1,8 +1,8 @@
 #
-# MIREX 2013 submission
+# MIREX 2014 submission
 #
 # Audio Beat Tracking
-# Prepared by Luis Figueira, [e-mail]
+# Chris Cannam, [e-mail]
 
 # Architecture
 
@@ -13,6 +13,8 @@
 - Sonic Annotator v1.0
   http://code.soundsoftware.ac.uk/projects/sonic-annotator/files
 
+- GNU libc 2.15 or newer, GNU libstdc++ 3.4.15 or newer
+
 - Typical Unix/GNU shell commands
 
 # How to run

--- a/audio_chord_estimation/chordino/README.txt	Thu Sep 04 13:59:00 2014 +0100
+++ b/audio_chord_estimation/chordino/README.txt	Thu Sep 04 15:42:08 2014 +0100
@@ -1,4 +1,5 @@
-# MIREX 2013 submission
+#
+# MIREX 2014 submission
 #
 # Audio Chord Estimation
 # Chris Cannam, [e-mail]
@@ -12,6 +13,8 @@
 - Sonic Annotator v1.0
   http://code.soundsoftware.ac.uk/projects/sonic-annotator/files
 
+- GNU libc 2.15 or newer, GNU libstdc++ 3.4.15 or newer
+
 - Typical Unix/GNU shell commands
 
 # How to run
@@ -22,6 +25,3 @@
 
 We do not use a training stage, so the second argument will be simply ignored.
 
-
-
-

--- a/audio_key_detection/qm-keydetector/README.txt	Thu Sep 04 13:59:00 2014 +0100
+++ b/audio_key_detection/qm-keydetector/README.txt	Thu Sep 04 15:42:08 2014 +0100
@@ -1,4 +1,5 @@
-# MIREX 2013 submission
+#
+# MIREX 2014 submission
 #
 # QM Key Detector
 # Plugin by Katy Noland and Christian Landone.
@@ -13,6 +14,8 @@
 - Sonic Annotator v1.0
   http://code.soundsoftware.ac.uk/projects/sonic-annotator/files
 
+- GNU libc 2.15 or newer, GNU libstdc++ 3.4.15 or newer
+
 - Typical Unix/GNU shell commands
 
 # How to run

--- a/audio_onset_detection/onsetsds/README.txt	Thu Sep 04 13:59:00 2014 +0100
+++ b/audio_onset_detection/onsetsds/README.txt	Thu Sep 04 15:42:08 2014 +0100
@@ -1,9 +1,9 @@
 #
-# MIREX 2013 submission
+# MIREX 2014 submission
 #
 # Audio Onset Detection
 # Vamp plugin version of OnsetsDS by Dan Stowell
-# Prepared by Chris Cannam, [e-mail]
+# Chris Cannam, [e-mail]
 
 # Architecture
 
@@ -14,6 +14,8 @@
 - Sonic Annotator v1.0
   http://code.soundsoftware.ac.uk/projects/sonic-annotator/files
 
+- GNU libc 2.15 or newer, GNU libstdc++ 3.4.15 or newer
+
 - Typical Unix/GNU shell commands
 
 # How to run

--- a/audio_onset_detection/qm-onsetdetector/README.txt	Thu Sep 04 13:59:00 2014 +0100
+++ b/audio_onset_detection/qm-onsetdetector/README.txt	Thu Sep 04 15:42:08 2014 +0100
@@ -1,5 +1,5 @@
 #
-# MIREX 2013 submission
+# MIREX 2014 submission
 #
 # Audio Onset Detection
 # Prepared by Chris Cannam, [e-mail]
@@ -13,6 +13,8 @@
 - Sonic Annotator v1.0
   http://code.soundsoftware.ac.uk/projects/sonic-annotator/files
 
+- GNU libc 2.15 or newer, GNU libstdc++ 3.4.15 or newer
+
 - Typical Unix/GNU shell commands
 
 # How to run

--- a/multiple_f0_estimation/silvet/README.txt	Thu Sep 04 13:59:00 2014 +0100
+++ b/multiple_f0_estimation/silvet/README.txt	Thu Sep 04 15:42:08 2014 +0100
@@ -3,15 +3,15 @@
 # Multiple Fundamental Frequency Estimation & Tracking
 # Chris Cannam, [e-mail]
 
-This submission uses the Silvet note estimation Vamp plugin running
-in Sonic Annotator.
+  This submission uses the Silvet note estimation Vamp plugin running
+  in Sonic Annotator.
 
-The plugin only produces note-tracked outputs, so there is no
-frame-by-frame estimation included with this submission.
+  The plugin only produces note-tracked outputs, so there is no
+  frame-by-frame estimation included with this submission.
 
-Two scripts are provided: doNoteTracking.sh runs the plugin in
-"unknown instrument" mode (the default for this plugin), while
-doNoteTracking-piano.sh runs it in "piano" mode.
+  Two scripts are provided: doNoteTracking.sh runs the plugin in
+  "unknown instrument" mode (the default for this plugin), while
+  doNoteTracking-piano.sh runs it in "piano" mode.
 
 # Architecture
 
@@ -22,6 +22,8 @@
 - Sonic Annotator v1.0
   http://code.soundsoftware.ac.uk/projects/sonic-annotator/files
 
+- GNU libc 2.15 or newer, GNU libstdc++ 3.4.15 or newer
+
 - Typical Unix/GNU shell commands
 
 # How to run

--- a/vamp-plugins_abstract/Makefile	Thu Sep 04 13:59:00 2014 +0100
+++ b/vamp-plugins_abstract/Makefile	Thu Sep 04 15:42:08 2014 +0100
@@ -1,7 +1,11 @@
-all: qmvamp-mirex2013.pdf
+all: qmvamp-mirex2013.pdf qmvamp-mirex2014.pdf
 
 qmvamp-mirex2013.pdf: qmvamp-mirex2013.tex qmvamp-mirex2013.bib
 	( echo q | xelatex qmvamp-mirex2013 ) && bibtex qmvamp-mirex2013 && xelatex qmvamp-mirex2013 && xelatex qmvamp-mirex2013
 
+qmvamp-mirex2014.pdf: qmvamp-mirex2014.tex qmvamp-mirex2014.bib
+	( echo q | xelatex qmvamp-mirex2014 ) && bibtex qmvamp-mirex2014 && xelatex qmvamp-mirex2014 && xelatex qmvamp-mirex2014
+
 clean:
 	rm -f qmvamp-mirex2013.bbl qmvamp-mirex2013.aux qmvamp-mirex2013.blg qmvamp-mirex2013.log 
+	rm -f qmvamp-mirex2014.bbl qmvamp-mirex2014.aux qmvamp-mirex2014.blg qmvamp-mirex2014.log 

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vamp-plugins_abstract/qmvamp-mirex2014.bib	Thu Sep 04 15:42:08 2014 +0100
@@ -0,0 +1,150 @@
+ @article{matthew2007a,
+  author = {Matthew E. P. Davies and Mark D. Plumbley},
+  title = {Context-Dependent Beat Tracking of Musical Audio},
+  journal = {IEEE Transactions on Audio, Speech and Language Processing},
+  number = {3},
+  pages = {1009-1020},
+  volume = {15},
+  year = {2007}
+}
+
+@article{ellis2007,
+ author = {D. P. W. Ellis},
+ title = {Beat Tracking by Dynamic Programming},
+ journal = {Journal of New Music Research},
+ volume = {37},
+ number = {1},
+ pages = {51-60},
+ year = {2007}
+} 
+
+@inproceedings{dan2007a,
+  author = {Dan Stowell and Mark D. Plumbley},
+  title = {Adaptive whitening for improved real-time audio onset detection},
+  booktitle = {Proceedings of the International Computer Music Conference (ICMC'07)},
+  year = {2007}
+}
+
+@inproceedings{chris2003a,
+  author = {Chris Duxbury and Juan Pablo Bello and Mike Davies and Mark Sandler},
+  title = {Complex Domain Onset Detection for Musical Signals},
+  booktitle = {Proceedings of the 6th Int. Conference on Digital Audio Effects (DAFx-03) },
+  year = {2003}
+}
+
+@inproceedings{dan2005a,
+  author = {Dan Barry and Derry Fitzgerald and Eugene Coyle and Bob Lawlor},
+  title = {Drum Source Separation using Percussive Feature Detection and Spectral Modulation},
+  booktitle = {ISSC 2005},
+  year = {2005}
+}
+
+ @article{mark2008a,
+  author = {Mark Levy and Mark Sandler},
+  title = {Structural Segmentation of Musical Audio by Constrained Clustering},
+  journal = {IEEE Transactions on Audio, Speech, and Language Processing},
+  month = {February},
+  number = {2},
+  pages = {318-326},
+  volume = {16},
+  year = {2008}
+}
+
+@conference{noland2007signal,
+        title={Signal Processing Parameters for Tonality Estimation},
+        author={Noland, Katy and Sandler, Mark},
+        booktitle={Audio Engineering Society Convention 122},
+        month={May},
+        year={2007}
+}
+
+ @inproceedings{sonicvisualise2010,
+  author = {Chris Cannam and Christian Landone and Mark Sandler},
+  title = {Sonic Visualiser: An Open Source Application for Viewing, Analysing, and Annotating Music Audio Files},
+  booktitle = {Proceedings of the ACM Multimedia 2010 International Conference},
+  year = {2010}
+}
+
+@BOOK{krumhansl1990,
+    AUTHOR    = {C. L. Krumhansl},
+    TITLE     = {Cognitive Foundations of Musical Pitch},
+    PUBLISHER = {Oxford University Press},
+    YEAR      = {1990}
+}
+
+@article {gomez2006,
+    title = {Tonal description of polyphonic audio for music content processing},
+    journal = {{INFORMS} Journal on Computing, Special Cluster on Computation in Music},
+    volume = {18},
+    year = {2006},
+    author = {Emilia G{\'o}mez}
+}
+
+@incollection{mauch:md1:2010,
+	Author = {Matthias Mauch and Simon Dixon},
+	Title = {{MIREX} 2010: Chord Detection Using a Dynamic Bayesian Network},
+  booktitle = {Music Information Retrieval Evaluation Exchange (MIREX)},
+	Year = {2010}
+}
+
+ @inproceedings{matthias2010a,
+  author = {Matthias Mauch and Simon Dixon},
+  title = {Approximate Note Transcription for the Improved Identification of Difficult Chords},
+  booktitle = {Proceedings of the 11th International Society for Music Information Retrieval Conference (ISMIR 2010)},
+  year = {2010}
+} 
+
+ @inproceedings{matthias2009a,
+  author = {Matthias Mauch and Katy C. Noland and Dixon, Simon},
+  title = {Using Musical Structure to Enhance Automatic Chord Transcription},
+  booktitle = {Proceedings of the 10th International Conference on Music Information Retrieval (ISMIR 2009)},
+  pages = {231-236},
+  year = {2009}
+} 
+
+ @phdthesis{matthiasphd,
+  author = {Matthias Mauch},
+  title = {Automatic Chord Transcription from Audio Using Computational Models of Musical Context},
+  school = {Queen Mary, University of London},
+  year = {2010}
+} 
+
+@misc{chris2012a,
+  author = {Chris Cannam},
+  title = {Unit testing: An audio research example},
+  howpublished = {Handout},
+  note = {One of the single-page handouts made available at DAFx and ISMIR 2012 tutorials. See http://www.soundsoftware.ac.uk/handouts-guides for more information.},
+  year = {2012}
+} 
+
+ @inproceedings{simon2006a,
+  author = {Simon Dixon},
+  title = {{MIREX} 2006 Audio Beat Tracking Evaluation: BeatRoot},
+  booktitle = {Music Information Retrieval Evaluation Exchange (MIREX)},
+  year = {2006}
+} 
+
+ @inproceedings{simon2001a,
+  author = {Simon Dixon},
+  title = {An Interactive Beat Tracking and Visualisation System},
+  booktitle = {Proceedings of the 2001 International Computer Music Conference (ICMC'2001)},
+  year = {2001}
+} 
+
+ @article{emmanouil2012a,
+  author = {Emmanouil Benetos and Dixon, Simon},
+  title = {A Shift-Invariant Latent Variable Model for Automatic Music Transcription},
+  journal = {Computer Music Journal},
+  number = {4},
+  pages = {81-94},
+  volume = {36},
+  year = {2012}
+}
+
+ @inproceedings{emmanouil2012b,
+  author = {Emmanouil Benetos and Simon Dixon},
+  title = {Multiple-{F0} Estimation and Note Tracking for {MIREX} 2012 using a Shift-Invariant Latent Variable Model},
+  booktitle = {Music Information Retrieval Evaluation Exchange (MIREX)},
+  year = {2012}
+} 
+

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vamp-plugins_abstract/qmvamp-mirex2014.tex	Thu Sep 04 15:42:08 2014 +0100
@@ -0,0 +1,256 @@
+% -----------------------------------------------
+% Template for MIREX 2010
+% (based on ISMIR 2010 template)
+% -----------------------------------------------
+
+\documentclass{article}
+\usepackage{mirex2010,amsmath,cite}
+\usepackage{graphicx}
+
+% Title.
+% ------
+\title{MIREX 2014:\\Vamp Plugins from the Centre for Digital Music}
+
+% Single address
+% To use with only one author or several with the same address
+% ---------------
+\oneauthor
+{Chris Cannam, Emmanouil Benetos, Matthias Mauch, Matthew E. P. Davies,}
+{Simon Dixon, Christian Landone, Katy Noland, and Dan Stowell}
+{Queen Mary, University of London \\ {\em [e-mail]}}
+
+\begin{document}
+%
+\maketitle
+%
+\begin{abstract}
+
+In this submission we offer for evaluation several audio feature
+extraction plugins in Vamp format.
+
+Some of these plugins represent efficient implementations based on
+modern work, while others are no longer state-of-the-art and were
+developed a few years ago. The methods implemented in this set of
+plugins are described in the literature and are referenced throughout
+this paper. All of the plugins have been published and are available
+under an open source licence.
+
+A number of these plugins were also submitted to the 2013 edition of
+MIREX: those are unchanged here and may offer a useful baseline for
+comparison between years. One plugin, that submitted for the Multiple
+Fundamental Frequency Estimation and Tracking task, is new this
+year. Three plugins submitted last year have been omitted from this
+year's submission.
+
+\end{abstract}
+%
+\section{Introduction}\label{sec:introduction}
+
+The Vamp plugin format\footnote{http://vamp-plugins.org/} was
+developed at the Centre for Digital Music (C4DM) at Queen Mary,
+University of London, during 2005-2006 in response to a desire to
+publish work in a form that would be immediately useful to people
+outside this research field. The Vamp plugin format was published with
+an open source SDK, alongside the Sonic
+Visualiser~\cite{sonicvisualise2010} audio analysis application which
+provided a useful host for Vamp plugins.
+
+In subsequent years the Vamp format has become a moderately popular
+means of distributing methods from the Centre and other research
+groups. Some dozens of Vamp plugins are now available from groups such
+as the Music Technology Group at UPF in Barcelona, the Sound and Music
+Computing group at INESC in Porto, the BBC, and others, as well as
+from the Centre for Digital Music.
+
+The plugins submitted for this evaluation are provided as a set of
+dynamic library files. Those with names starting ``QM'' are all
+provided in a single library file, the QM Vamp Plugins set, made
+available in binary form for Windows, OS/X, and Linux from the Centre
+for Digital Music's download
+page.\footnote{http://vamp-plugins.org/plugin-doc/qm-vamp-plugins.html} These
+plugins come from a number of authors who are credited in this
+abstract and in the plugins' accompanying documentation.
+
+In addition to the QM Vamp Plugins set, this submission contains a
+number of separate plugins: the Chordino plugin from Matthias Mauch;
+the BeatRoot Vamp Plugin from Simon Dixon; OnsetsDS from Dan Stowell;
+and the Silvet note transcription plugin from Emmanouil Benetos and
+Chris Cannam.
+
+The plugins are all provided as 64-bit Linux shared objects depending
+on GNU libc 2.15 or newer and GNU libstdc++ 3.4.15 or newer. Sonic
+Annotator v1.0 is also
+required\footnote{http://code.soundsoftware.ac.uk/projects/sonic-annotator/}
+in order to run the task scripts.
+
+For an overview of this submission across all of the tasks and plugins
+it covers, please see the relevant repository at the SoundSoftware
+site.\footnote{http://code.soundsoftware.ac.uk/projects/mirex2013/}
+
+\section{Submissions by MIREX Task}
+
+\subsection{Audio Beat Tracking}
+
+\subsubsection{QM Tempo and Beat Tracker}
+\label{tempo_and_beat_tracker}
+
+The QM Tempo and Beat Tracker\cite{matthew2007a} Vamp plugin analyses
+a single channel of audio and estimates the positions of metrical
+beats within the music.
+
+This plugin uses the complex-domain onset detection method from~\cite{chris2003a} with a hybrid of the two-state beat tracking model
+proposed in~\cite{matthew2007a} and a dynamic programming method based
+on~\cite{ellis2007}. 
+
+To identify the tempo, the onset detection function is partitioned
+into 6-second frames with a 1.5-second increment. The autocorrelation
+function of each 6-second onset detection function is found and this
+is then passed through a perceptually weighted comb
+filterbank\cite{matthew2007a}. The successive comb filterbank output
+signals are grouped together into a matrix of observations of
+periodicity through time. The best path of periodicity through these
+observations is found using the Viterbi algorithm, where the
+transition matrix is defined as a diagonal Gaussian.
+
+Given the estimates of periodicity, the beat locations are recovered
+by applying the dynamic programming algorithm\cite{ellis2007}. This
+process involves the calculation of a recursive cumulative score
+function and backtrace signal. The cumulative score indicates the
+likelihood of a beat existing at each sample of the onset detection
+function input, and the backtrace gives the location of the best
+previous beat given this point in time. Once the cumulative score and
+backtrace have been calculated for the whole input signal, the best
+path through beat locations is found by recursively sampling the
+backtrace signal from the end of the input signal back to the
+beginning.
+
+The QM Tempo and Beat Tracker plugin was written by Matthew
+Davies and Christian Landone.
+
+\subsubsection{BeatRoot}
+
+The BeatRoot Vamp plugin\footnote{http://code.soundsoftware.ac.uk/projects/beatroot-vamp/} is an open source Vamp plugin library that
+implements the BeatRoot beat-tracking method of Simon
+Dixon\cite{simon2001a}. The BeatRoot algorithm has been submitted to
+MIREX evaluation in earlier years\cite{simon2006a}; this plugin
+consists of the most recent BeatRoot code release, converted from Java
+to C++ and modified for plugin format.
+
+The BeatRoot plugin was written by Simon Dixon and Chris Cannam.
+
+\subsection{Audio Key Detection}
+
+\subsubsection{QM Key Detector}
+
+The QM Key Detector Vamp plugin continuously estimates the key of the
+music by comparing the degree to which a block-by-block chromagram
+correlates to stored key profiles for each major and minor key.
+
+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 QM Key Detector plugin was written by Katy Noland and
+Christian Landone.
+
+\subsection{Audio Chord Estimation}
+
+\subsubsection{Chordino}
+
+The Chordino plugin\footnote{http://isophonics.net/nnls-chroma} was developed following Mauch's 2010 work on chord
+extraction, submitted to MIREX in that
+year\cite{mauch:md1:2010}. While that submission used a C++ chroma
+implementation with a MATLAB dynamic Bayesian network as a chord
+extraction front-end\cite{matthias2010a}, Chordino is an entirely C++
+implementation that was developed specifically to be made freely
+available as an open-source plugin for general use.
+
+The method for the Chordino plugin has two parts:
+
+{\bf NNLS Chroma} --- NNLS Chroma analyses a single channel of audio
+using frame-wise spectral input from the Vamp host. The spectrum is
+transformed to a log-frequency spectrum (constant-Q) with three bins
+per semitone. On this representation, two processing steps are
+performed: tuning, after which each centre bin (i.e. bin 2, 5, 8, …)
+corresponds to a semitone, even if the tuning of the piece deviates
+from 440 Hz standard pitch; and running standardisation: subtraction
+of the running mean, division by the running standard deviation. This
+has a spectral whitening effect.
+
+The processed log-frequency spectrum is then used as an input for NNLS
+approximate transcription using a dictionary of harmonic notes with
+geometrically decaying harmonics magnitudes. The output of the NNLS
+approximate transcription is semitone-spaced. To get the chroma, this
+semitone spectrum is multiplied (element-wise) with the desired
+profile (chroma or bass chroma) and then mapped to 12 bins.
+
+{\bf Chord transcription} --- A fixed dictionary of chord profiles is
+used to calculate frame-wise chord similarities. A standard
+HMM/Viterbi approach is used to smooth these to provide a chord
+transcription.
+
+Chordino was written by Matthias Mauch.
+
+\subsection{Audio Onset Detection}
+
+\subsubsection{QM Note Onset Detector}
+
+The QM Note Onset Detector Vamp plugin estimates the onset times of
+notes within the music. It calculates an onset likelihood function for
+each spectral frame, and picks peaks in a smoothed version of this
+function.
+
+Several onset detection functions are available in this plugin; this
+submission uses the complex-domain method described
+in~\cite{chris2003a}.
+
+The QM Note Onset Detector plugin was written by Chris Duxbury, Juan
+Pablo Bello and Christian Landone.
+
+\subsubsection{OnsetsDS}
+
+OnsetsDS\footnote{http://code.soundsoftware.ac.uk/projects/vamp-onsetsds-plugin/} is an onset detector plugin wrapping Dan Stowell's OnsetsDS
+library\footnote{http://onsetsds.sourceforge.net/}, described
+in~\cite{dan2007a}.
+
+OnsetsDS was designed to provide an FFT-based onset detection that
+works very efficiently in real-time, with a fast reaction time. It is
+not tailored for non-real-time use or for any particular type of
+signal.
+
+The OnsetsDS plugin was written by Dan Stowell and Chris Cannam.
+
+\subsection{Multiple Fundamental Frequency Estimation and Tracking}
+
+\subsubsection{Silvet}
+
+Silvet (for Shift-Invariant Latent Variable
+Transcription)\footnote{http://code.soundsoftware.ac.uk/projects/silvet/}
+is a Vamp plugin for automatic music transcription, using a method
+based on that of~\cite{emmanouil2012a}. It produces a note
+transcription as output, and so is here submitted only for the note
+tracking evaluation in this task, and not for framewise evaluation.
+
+Silvet uses a probablistic latent-variable estimation method to
+decompose a Constant-Q time-frequency matrix into note activations
+using a set of spectral templates learned from recordings of solo
+instruments. The method is thought to perform quite well for clear
+recordings that contain only instruments with a good correspondence to
+the known templates. Silvet does not contain any vocal templates, or
+templates for typical rock or electronic instruments.
+
+The method implemented in Silvet is very similar to that submitted to
+MIREX in 2012 as the BD1, BD2 and BD3 submissions in the Multiple F0
+Tracking task of that year~\cite{emmanouil2012b}. In common with that
+submission, and unlike the paper cited at~\cite{emmanouil2012a},
+Silvet uses a simple thresholding method instead of an HMM for note
+identification. However, Silvet follows~\cite{emmanouil2012a}
+rather than~\cite{emmanouil2012b} in including a 5-bin-per-semitone
+pitch shifting parameter.
+
+The Silvet plugin was written by Chris Cannam and Emmanouil Benetos.
+
+\bibliography{qmvamp-mirex2014}
+
+\end{document}