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Regularization techniques for discrete cepstrum estimation
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DOI：10.1109/97.489060.png)
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Abstract
En 中文
The discrete cepstrum method consists in fitting a spectral envelope parameterized by cepstrum coefficients to a discrete set of spectral points using a log-spectral distortion criterion, Unfortunately, this estimation problem is ill conditioned in many cases of interest, This letter introduces a simple regularization technique that guarantees that the spectral envelope is well behaved. A modification of the basic regularization criterion is proposed in order to take into account a possible prior knowledge of the spectral tilt of the envelope.
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9.6
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1.1W
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1.7W
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