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- W1985196830 abstract "Fractional delay filters are those that are designed to delay the input samples by a fractional amount of the sampling period. Since the delay is fractional, the intersample behavior of original analog signals becomes crucial. For this, we propose an optimal design via sampled-data H∞ control theory. By this theory, our design problem is equivalently reduced to a discrete-time H∞ optimization, and, an analytical solution is obtained under an assumption on the original analog signals. Using this analytical solution, we propose a sampling rate conversion with arbitrary conversion rate. This conversion is much faster than conventional methods using an upsampler, a digital filter, and a downsampler. We also show an application of the proposed sampling rate conversion to pitch shifting of guitar sounds. A design example is shown to illustrate the advantage of the proposed method." @default.
- W1985196830 created "2016-06-24" @default.
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- W1985196830 date "2011-01-01" @default.
- W1985196830 modified "2023-09-23" @default.
- W1985196830 title "Pitch Shifting by H∞-Optimal Variable Fractional Delay Filters" @default.
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- W1985196830 doi "https://doi.org/10.3182/20110828-6-it-1002.02724" @default.
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