Multiple F0 Estimation in the Transform Domain
نویسندگان
چکیده
A novel algorithm is proposed to estimate the fundamental frequencies present in polyphonic acoustic mixtures expressed in a transform domain. As an example, the algorithm operates on Modified Discrete Cosine Transform (MDCT) coefficients in order to demonstrate the utility of the method in commercially available perceptual audio codecs which use the MDCT. An auditory model is developed along with several optimizations that deal with the constraints of processing in the transform-domain, including an interpolation method, a transform-domain half-wave rectification model, tonal component estimation, and sparse convolution. Test results are separated by instrument and analyzed in detail. The proposed algorithm is shown to perform comparably to state of the art time-domain methods.
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