Circular Pitch Space Based Chord Analysis
نویسندگان
چکیده
In this paper we present a chord finding system that is based on circular pitch spaces (CPS) introduced by Gatzsche et al. in 2008 [1] and Hidden Markov Models (HMM). The classifier HMM works with the output of the CPS that is directly calculated from the chromagram (Figure 1). The CPS displays harmonic events clearer than the common used chromagram. Therefore it is appropriate for chord analysis. Another circular pitch space – introduced in 2006 by Harte, Sandler and Gasser [2] – will be used for comparison. Several papers showed that the CPS_HSG is also useful for chord detection.
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