منابع مشابه
Parametric coding of speech spectra
We sugg•t that a class of speech coders can be designed from criteria that are perception-specific. Such a class represents a middle ground between "waveform" coders and speech-specific "source" coders. We argue that, within perceptually acceptable limits, a bandpass portion of a speech signal can be represented by its short-time spectral mplitude ISn I and its phase derivative •n. Both paramet...
متن کاملPole-zero decomposition of speech spectra
A n e w method for determining the parameters of a pole-zero model for speech spect ra is p r o p o s e d in this paper . In this method the cepstral coefficients of a signal are split into t w o p a r t s , one corresponding to poles and the other to zeros. The decomposition is achieved by u s i n g the propert ies of the derivative of phase spectra of minimum phase signals. P a r a m e t e r ...
متن کاملPrincipal-components analysis for low-redundancy encoding of speech spectra
The principal-components statistical procedure for data reduction is used to efficiently encode speech power spectra by exploiting the correlations of power spectral amplitudes at various frequencies. Although this datareduction procedure has been used in several previous studies, little attempt was made to optimize the methods for spectral selection and coding through the use of intelligibilit...
متن کاملNoise Robust Speech Parameterization using Relative Spectra and Auditory Filterbank
In the present study, a new feature extraction method based on relative spectra and gammachirp auditory filterbank is proposed for robust noisy speech recognition. The relative spectra filtering are applied to the log of the output of the gammachirp filterbank which incorporates the properties of the cochlear filter in order to remove uncorrelated additive noise components. The performances of ...
متن کاملA pole-zero model for cepstrally smoothed speech spectra
I In this paper a new method for representation of cepstrally smoothed speech spectra by a pole—zero model is presented. In this method the cepatrally smoothed log spectrum is split into two parts, one corresponding to the response of the numerator polynomial of the model transfer function arid the other part to the response of the denominator polynomial of the model transfer function. The deco...
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ژورنال
عنوان ژورنال: The Journal of the Acoustical Society of America
سال: 1955
ISSN: 0001-4966
DOI: 10.1121/1.1917951