Download e-book for kindle: Advances in Non-Linear Modeling for Speech Processing by Raghunath S. Holambe

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By Raghunath S. Holambe

ISBN-10: 1461415047

ISBN-13: 9781461415046

ISBN-10: 1461415055

ISBN-13: 9781461415053

Advances in Non-Linear Modeling for Speech Processing comprises complicated subject matters in non-linear estimation and modeling strategies in addition to their functions to speaker popularity.

Non-linear aeroacoustic modeling procedure is used to estimate the real fine-structure speech occasions, which aren't published through the quick time Fourier rework (STFT). This aeroacostic modeling method offers the impetus for the excessive solution Teager power operator (TEO). This operator is characterised via a time answer which could song swift sign strength alterations inside a glottal cycle.

The cepstral good points like linear prediction cepstral coefficients (LPCC) and mel frequency cepstral coefficients (MFCC) are computed from the value spectrum of the speech body and the part spectra is overlooked. to beat the matter of neglecting the section spectra, the speech creation procedure could be represented as an amplitude modulation-frequency modulation (AM-FM) version. To demodulate the speech sign, to estimation the amplitude envelope and prompt frequency parts, the strength separation set of rules (ESA) and the Hilbert rework demodulation (HTD) set of rules are mentioned.

Different positive factors derived utilizing above non-linear modeling suggestions are used to advance a speaker id method. ultimately, it's proven that, the fusion of speech construction and speech belief mechanisms can result in a powerful characteristic set.

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Additional info for Advances in Non-Linear Modeling for Speech Processing

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Bishop C (1997) Neural networks for pattern recognition. 1 Introduction We begin this chapter by discussing signal energy in general. , the Teager energy operator (TEO) and how it can be obtained by considering a second order differential equation, which describes the motion of an object suspended by a spring. This operator is interesting because it has a small time window, making it ideal for local (time) analysis of signals. The analysis of AM–FM signals using the Teager Energy Operator is probably the field where most of the research regarding the operator has been done so far.

The most general form of the time-varying nonlinear dynamic system model, with nonlinearity in both state and observation equations, is as follows in its state-space formulation [20]: x(k + 1) = gk [x(k), uk , w(k)] ´ = h ´ [x(k), v(k)]. ] can be time varying and be asynchronous with each other. , the model discussed by Ghahramani et al. in [21]. The time-invariant (stationary) version of such a simplified model has the state-space form of x(k + 1) = g[x(k), u] + w(k)] o(k) = h[x(k)] + v(k). ) in Eq.

Approximations are frequently used to gain computational simplifications while sacrificing accuracy for approximating the nonlinear functions. One very commonly used technique for the approximation is a truncated vector Taylor series expansion. If all the Taylor series terms of order two and higher are truncated, then we have the linear Taylor series approximation that is characterized by the Jacobian matrix J and the point of Taylor series expansion x0 . For a vector input of dimension n and a vector output of dimension m, this linear approximation can be written as h(x) ≈ h(x0 ) + J(x0 )(x − x0 ).

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Advances in Non-Linear Modeling for Speech Processing by Raghunath S. Holambe

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