This paper describes a method for estimating the amplitude characteristics of common poles in a room soundfield from a musical audio signal received by multiple microphones. It has been proven that an estimate can be calculated precisely for a white source signal. However, if a source signal is colored as in the case of a musical audio signal, the estimates are degraded by the frequency characteristics originally contained in the source signal. In this paper, we propose an extension of the conventional method so that it can estimate the amplitude characteristics of common acoustical poles. Simulation results for popular, classical, and jazz musical pieces showed the effectiveness of the proposed method.
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