@TECHREPORT\{IMM2006-04100,
    author       = "M. N. Schmidt and M. M{\o}rup",
    title        = "Sparse Non-negative Matrix Factor {2-D} Deconvolution for Automatic Transcription of Polyphonic Music",
    year         = "2006",
    month        = "aug",
    keywords     = "non-negative matrix factorization, automatic music transcription, music information retrieval",
    number       = "",
    series       = "",
    institution  = "",
    address      = "",
    type         = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/4100-full.html",
    abstract     = "We present a novel method for automatic transcription of polyphonic music based on a recently published algorithm for non-negative matrix factor {2-D} deconvolution. The method works by simultaneously estimating a time-frequency model for an instrument and a pattern corresponding to the notes which are played based on a log-frequency spectrogram of the music."
}