Tempo Induction by Investigating the Metrical Structure of Music Using a Periodicity Signal That Relates to the Tatum Period
نویسنده
چکیده
The estimation of the musical tempo of audio signals is of large interest for various applications, e.g. the synchronization of multi-media content to music and music information retrieval systems. This article describes the author’s contribution to the 2 Annual Music Information Retrieval Evaluation Exchange (MIREX 2005) and gives an evaluation and comparison of the recognition performance. The presented method computes a representation of the metrical structure of a musical piece as a function of the degree of periodicity of a phenomenal accent signal at lags that relate to the period of the fastest pulse. This representation is compared to pre-defined metric templates, corresponding to various time signatures and metrical structures. A list of tempo hypotheses is obtained from the best fitting template, from which the tempo is chosen with respect to their salience and apriori probabilities of tempo values.
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