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2001 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings (Cat. No.01CH37221)

7-11 May 2001

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  • 2001 IEEE International Conference on Acoustics, Speech, and Signal Processing Proceedings [front matter]

    Publication Year: 2001, Page(s):i - xci
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  • An adaptive broadband estimator of the fractional differencing coefficient

    Publication Year: 2001, Page(s):3417 - 3420 vol.6
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (353 KB) | HTML iconHTML

    We consider semiparametric fractional exponential (FEXP) estimators of the memory parameter d for a potentially nonstationary linear long-memory time series with smooth additive trend. We use differencing to annihilate the trend, followed by tapering to handle the potential non-invertibility of the differenced series. We propose a method of pooling the tapered periodogram which leads to more effic... View full abstract»

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  • An iterative solution for the optimal poles in a Kautz series

    Publication Year: 2001, Page(s):3949 - 3952 vol.6
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (301 KB) | HTML iconHTML

    Kautz series allow orthogonal series expansion of finite-energy signals defined on a semi-infinite axis. The Kautz series consists of orthogonalized exponential functions or sequences. This series has as free parameters an ordered set of poles, each pole associated with an exponential function or sequence. For reasons of approximation and compact representation (coding), an appropriate set of orde... View full abstract»

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  • Some of the abstracts listed in the student forum reflect work that was not published in the ICASSP proceedings

    Publication Year: 2001, Page(s):4013 - 4053
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  • Author index

    Publication Year: 2001, Page(s):4055 - 4068
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  • A single-parameter adaptive comb filter

    Publication Year: 2001, Page(s):3749 - 3752 vol.6
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (292 KB) | HTML iconHTML

    The study is concerned with a single-parameter adaptive comb filter (ACF), a multi-notch filter with periodically located nulls. The filter is suggested to retrieve a waveform modeled by superposition of harmonics, in particular, a periodic non-sinusoidal signal. Using trigonometric constraints between the signal fundamental frequency and overtones results in a nonlinear estimation problem. The ad... View full abstract»

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  • The data-selective constrained affine-projection algorithm

    Publication Year: 2001, Page(s):3745 - 3748 vol.6
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (276 KB) | HTML iconHTML

    This paper introduces a constrained version of the recently proposed set-membership affine projection algorithm based on the set-membership criteria for coefficient update. The algorithm is suitable for linearly constrained minimum-variance filtering applications. The data-selective property of the proposed algorithm greatly reduces the computational burden as compared with a nonselective approach... View full abstract»

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  • A synchronized learning algorithm for reflection coefficients and tap weights in a joint lattice predictor and transversal filter

    Publication Year: 2001, Page(s):3741 - 3744 vol.6
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (264 KB) | HTML iconHTML

    In order to achieve fast convergence and less computation for adaptive filters, a joint method combining a whitening process and the NLMS algorithm is a hopeful approach. One way is to combine a lattice predictor and a transversal filter supervised by the NLMS algorithm. However, the filter coefficient adaptation is very sensitive to the reflection coefficient fluctuation. The reason for this inst... View full abstract»

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  • An efficient algorithm for FIR filter bank completion

    Publication Year: 2001, Page(s):3629 - 3632 vol.6
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (280 KB) | HTML iconHTML

    This paper presents an algorithm for designing an FIR paraunitary filter bank when one or several filters are given. The algorithm is based on the properties of the balanced state-space representation of the polyphase matrix. We show that this representation may be computed via a single RQ decomposition thus gaining significant efficiency with respect to previous work. Application of the algorithm... View full abstract»

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  • Effecting frequency shifts with a DFT filterbank

    Publication Year: 2001, Page(s):3669 - 3672 vol.6
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (304 KB) | HTML iconHTML

    It is often required to apply a shift in frequency to the channelised data within a DFT filterbank. An example application is the frequency domain implementation of the cyclic Wiener filter. A common approach is to rotate the transform through an appropriate number of bins, but this is only accurate if the frequency shift is a multiple of the bin width. A better approach is to combine the bin rota... View full abstract»

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  • A new unbiased equation error algorithm for IIR ADF and its application to ALE

    Publication Year: 2001, Page(s):3737 - 3740 vol.6
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (252 KB) | HTML iconHTML

    A new online algorithm for updating equation error IIR ADF is proposed. The proposed algorithm, which involves maintaining a constant power of the desired signal, is independent of the white disturbance signal, and hence there is no bias in the coefficient's estimate of the ADF. We also provide the analysis and simulation results which verify this kind of performance. Application of the proposed a... View full abstract»

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  • Multiple environment optimal update profiling for steepest descent algorithms

    Publication Year: 2001, Page(s):3853 - 3856 vol.6
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (256 KB) | HTML iconHTML

    Methods for use of prior information about multiple operating environments, in improving adaptive filter convergence properties are discussed. More concretely, the gain selection, profiling and scheduling in steepest descent algorithms are treated in detail. The work presented is an extension of Milisavljevic (2000). Two flavors of optimization are discussed: average descent rate optimization and ... View full abstract»

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  • Implementation of parallel cosine and sine modulated filter banks for equalized transmultiplexer systems

    Publication Year: 2001, Page(s):3625 - 3628 vol.6
    Cited by:  Papers (9)  |  Patents (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (292 KB) | HTML iconHTML

    Filter bank-based transmultiplexer systems have certain advantages compared with existing DFT-based multicarrier systems and they are promising candidates for data transmission in frequency-selective channels. We have recently proposed a novel and efficient channel equalization idea to be used with critically decimated perfect reconstruction cosine modulated transmultiplexer systems. The equalizer... View full abstract»

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  • Alperts multi-wavelets from spline super-functions

    Publication Year: 2001, Page(s):3665 - 3668 vol.6
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (220 KB) | HTML iconHTML

    For multi-wavelets generalized left eigenvectors of the matrix H f a finite portion of down-sampled convolution matrix H determine the combinations of scaling functions that produce the desired spline or scaling function from which polynomials of desired degree can be reproduced. This condition is used to construct Alpert's multi-wavelets with multiplicity two, three and four and with a... View full abstract»

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  • Adaptive signal processing by particle filters and discounting of old measurements

    Publication Year: 2001, Page(s):3733 - 3736 vol.6
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (304 KB) | HTML iconHTML

    In adaptive signal processing the principle of exponentially weighted recursive least-squares plays a major role in developing various estimation algorithms. It is based on the concept of discounting of old measurements and allows for better performance in problems with time-varying signals and signals in nonstationary noise. We show how this concept can be combined with the Bayesian methodology. ... View full abstract»

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  • Source separation in structured nonlinear models

    Publication Year: 2001, Page(s):3513 - 3516 vol.6
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (320 KB) | HTML iconHTML

    This paper discusses several issues related to blind source separation in nonlinear models. Specifically, separability results show that separation in the general case is impossible, however, for specific nonlinear models the problem does have a solution. A specific set of parametric nonlinear mixtures is considered; this set has the Lie group structure. In the parameter set, a group operation is ... View full abstract»

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  • Convergence analysis of the NLMS algorithm with M-independent inputs

    Publication Year: 2001, Page(s):3849 - 3852 vol.6
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (300 KB) | HTML iconHTML

    In most adaptive identification applications, a finite impulse response (FIR) filter is employed with coefficients that are computed using the normalized least mean square (NLMS) algorithm. The convergence behavior of the NLMS algorithm is analyzed using a simple model of the input signal vectors. Explicit expressions of the learning curve and misadjustment are derived and compared with those prev... View full abstract»

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  • Design of cosine-modulated filter bank prototype filters using the frequency-response masking approach

    Publication Year: 2001, Page(s):3621 - 3624 vol.6
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (280 KB) | HTML iconHTML

    We use the frequency-response masking (FRM) approach to design prototype filters for cosine-modulated filter banks in the nearly perfect reconstruction case. With such an approach, it is possible to design a FRM filter with overall order almost equal to the direct-form FIR design, with only slight changes in the values of the inter-carrier and inter-symbol interferences and the attenuation of the ... View full abstract»

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  • Biorthogonal Butterworth wavelets

    Publication Year: 2001, Page(s):3645 - 3648 vol.6
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (296 KB) | HTML iconHTML

    We present a new family of biorthogonal wavelet transforms and a related library of biorthogonal symmetric wavelets. For the construction we use the interpolatory discrete splines which enable us to design perfect reconstruction filter banks related to the Butterworth filters. The construction is performed in a “lifting” manner. The proposed scheme is based on interpolation and, as suc... View full abstract»

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  • On optimal transforms for subband domain suppression of colored noise

    Publication Year: 2001, Page(s):3661 - 3664 vol.6
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB) | HTML iconHTML

    Suppose we wish to analyze a noisy signal using a filter bank (FB) and apply noise suppression schemes such as Wiener filters in the subbands of the FB. This paper formalizes and studies the problem of finding the best FB for this purpose. The best FB depends on the class of allowed FB, the type of subband processing, and the statistics of the input signal and additive noise. Recently we have show... View full abstract»

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  • Multi-split adaptive filtering

    Publication Year: 2001, Page(s):3729 - 3732 vol.6
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB) | HTML iconHTML

    A novel transversal split filter configuration is proposed and the split optimum Wiener filter is introduced, as well as the symmetric and antisymmetric linear phase Wiener filter. The approach consists of combining the idea of split filtering with a linearly constrained optimization scheme. Then, the continuously split procedure is introduced and the multi-split adaptive filter is derived. It is ... View full abstract»

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  • Bayesian MCMC nonlinear time series prediction

    Publication Year: 2001, Page(s):3509 - 3512 vol.6
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (244 KB) | HTML iconHTML

    A MCMC (Markov chain Monte Carlo) algorithm is proposed for nonlinear time series prediction with a hierarchical Bayesian framework. The algorithm computes predictive mean and error bar by drawing samples from predictive distributions. The algorithm is tested against time series generated by a (chaotic) Rossler system and it outperforms quadratic approximations previously proposed by the authors View full abstract»

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  • Matrix formulation of a universal microbial transcript profiling system

    Publication Year: 2001, Page(s):3453 - 3456 vol.6
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (260 KB) | HTML iconHTML

    DNA chips and microarrays are used to profile gene transcription. Unfortunately, the initial fabrication cost for a chip and the reagent costs to amplify thousands of open reading frames for a microarray are over $100K for a typical 4 Mbase bacterial genome. To avoid these expensive steps, a matrix formulation of a universal hybrid chip-microarray approach to transcript profiling is demonstrated f... View full abstract»

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  • Information bounds for random signals in time-frequency plane

    Publication Year: 2001, Page(s):3549 - 3552 vol.6
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (324 KB) | HTML iconHTML

    Renyi entropy has been proposed as one of the methods for measuring signal information content and complexity on the time-frequency plane. It provides a quantitative measure for the uncertainty of the signal. All of the previous work concerning Renyi entropy in the time-frequency plane has focused on determining the number of signal components in a given deterministic signal. We discuss the behavi... View full abstract»

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  • Evaluation and design of variable step size adaptive algorithms

    Publication Year: 2001, Page(s):3845 - 3848 vol.6
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (316 KB) | HTML iconHTML

    This paper presents a new methodology for evaluation and design of variable step size adaptive algorithms. The new methodology is based on a learning plane, which combines the evolutions of both the step size and the mean square error. It includes both transient and steady-state behaviors and can be used to compare performances of different algorithms against an optimum trajectory in the learning ... View full abstract»

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