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by heycosmo
1984 days ago
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An audio encoder. The resulting format has simple compression parameters and will be optimized for time-stretching/pitch-shifting. The format is really nothing special; it is based on a sinusoids + noise model. The novelty is in the analysis algorithm, which I think identifies sinusoids particularly well, avoiding common difficulties like the Gibbs phenomenon [0], which leads to "smearing" of transients when time-stretching. [0] https://en.wikipedia.org/wiki/Gibbs_phenomenon |
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