IEEE Transactions on Acoustics, Speech, and Signal Processing

Issue 1 • February 1985

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Displaying Results 1 - 25 of 52
  • [Front cover and table of contents]

    Publication Year: 1985, Page(s): 0
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  • Fast algorithms for lpdeconvolution

    Publication Year: 1985, Page(s):174 - 182
    Cited by:  Papers (66)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (921 KB)

    This paper discusses two algorithms forl_{p}, 1 leq p leq 2, deconvolution. One, iterative reweighted least squares (IRLS), is discussed with an eye toward improving its computational efficiency, while the other, residual steepest descent (RSD), is considered in an attempt to improve its convergence properties. In the first case, fast Fourier transforms are used to reduce the number of ... View full abstract»

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  • A fast algorithm for solving a Toeplitz system of equations

    Publication Year: 1985, Page(s):254 - 267
    Cited by:  Papers (39)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1468 KB)

    A fast algorithm for the solution of a Toeplitz system of equations is presented. The algorithm requires orderN(log N)^{2}computations where N is the number of equations. For banded Toeplitz matrices the order of computations is reduced to onlyN log N + m(log m)^{2}where 2m is the maximum number of nonzero principal subdiagonals of the Toeplitz matrix. The algorithm is in ess... View full abstract»

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  • Sampling expansions for multiband signals

    Publication Year: 1985, Page(s):312 - 315
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (434 KB)

    The class BIof finite energy signals bandlimited to a set I is considered where I denotes a finite union of disjoint open intervals (bands) on the real frequency axis. If such a signal is sampled uniformly (constant intersample spacing T), it is shown that the following five propositions are equivalent. 1) Any signal in BIis uniquely determined from its uniform samples taken ... View full abstract»

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  • VLSI Silicon compilation and the art of automatic microchip design [Book Reviews]

    Publication Year: 1985, Page(s):336 - 337
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  • Adaptive filtering prediction and control [Book Reviews]

    Publication Year: 1985, Page(s):337 - 338
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  • LC filter design, test, and manufacturing

    Publication Year: 1985, Page(s): 337
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (161 KB)

    First Page of the Article
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  • [Back cover]

    Publication Year: 1985, Page(s): c4
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  • Estimates for the stability of low-pass filters

    Publication Year: 1985, Page(s):98 - 105
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (656 KB)

    A measure of stability is defined for digital filters. It is shown that the stability of low-pass filters goes to zero as the filter characteristics approach that of an ideal low-pass filter. More precisely, estimates for the rate of convergence are given. It is shown that, except for constants, the stability of a low-pass filter is no greater than the square root of the reciprocal of the logarith... View full abstract»

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  • Convergence analysis of LMS filters with uncorrelated Gaussian data

    Publication Year: 1985, Page(s):222 - 230
    Cited by:  Papers (256)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (768 KB)

    Statistical analysis of the least mean-squares (LMS) adaptive algorithm with uncorrelated Gaussian data is presented. Exact analytical expressions for the steady-state mean-square error (mse) and the performance degradation due to weight vector misadjustment are derived. Necessary and sufficient conditions for the convergence of the algorithm to the optimal (Wiener) solution within a finite varian... View full abstract»

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  • On relating discrete Fourier, sine, and symmetric cosine transforms

    Publication Year: 1985, Page(s):219 - 222
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (384 KB)

    The relationship among a real formalism of the discrete Fourier transform, discrete sine transform, and discrete symmetric cosine transform is discussed. It is shown that the real formalism of the discrete Fourier transform is basically equivalent to the direct sum of the other two transforms, with modifications in the pre- and post-computations with the data vector. View full abstract»

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  • A new technique for the design of two-dimensional FIR and IIR filters

    Publication Year: 1985, Page(s):268 - 280
    Cited by:  Papers (29)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1208 KB)

    The design problem of two-dimensional digital filters is the subject of this paper. The problem is formulated for both FIR and IIR filters in such a way that the performance index is a convex function of the optimization vector. The design technique is based on Newton's method. Each iteration consists of N easily computed steps, where N is the number of parameters to be optimized. The coefficients... View full abstract»

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  • The radon transforms and some of its applications

    Publication Year: 1985, Page(s):338 - 339
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (240 KB)

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  • A wearable tactile intonation display for the deaf

    Publication Year: 1985, Page(s):111 - 117
    Cited by:  Papers (5)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1232 KB)

    A wearable device is described which represents the fundamental frequency of voiced sounds as the locus of pitch-synchronous vibrotactile stimulation of the skin. The pitch extractor, which accepts inputs from either a microphone or an accelerometer, uses a combination of low-pass filtering and peak detection to generate a square wave whose frequency is half that of the fundamental frequency of th... View full abstract»

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  • On the structure of efficient DFT algorithms

    Publication Year: 1985, Page(s):248 - 254
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (800 KB)

    This paper examines the structure of the prime length discrete Fourier transform algorithms that are developed by Winograd's approach. It is shown that those algorithms have considerable structure, and this can be exploited to develop a straightforward design procedure which does not use the Chinese remainder theorem and which includes any allowed permutations. This structure also allows the desig... View full abstract»

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  • Two-dimensional linear prediction models--part I: Spectral factorization and realization

    Publication Year: 1985, Page(s):280 - 299
    Cited by:  Papers (34)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1752 KB)

    In this paper we present several results for three different canonical forms of linear prediction on a plane. These filters have causal, semicausal, and noncausal prediction geometries. Starting from their properties we consider the problem of realization of these filters from a given power spectral density function (SDF). Since it is not possible in general to obtain rational spectral factors of ... View full abstract»

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  • Constrained signal restoration via iterated extended Kalman filtering

    Publication Year: 1985, Page(s):331 - 334
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (480 KB)

    The problem of estimating the input (signal restoration) to a known linear system (point spread function), given the noisy observations of the output, is considered. The input signal is assumed to satisfy certain known physical constraints such as positivity. It is proposed to incorporate the constraints by introducing a memoryless non-linearity in the system. A statistical approach is taken leadi... View full abstract»

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  • ARMA spectral estimation for noisy signals observed through a linear system

    Publication Year: 1985, Page(s):160 - 163
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (440 KB)

    Spectral estimation for autoregressive moving-average (ARMA) processes observed through a known linear system is considered. An algorithm based on a system identification/parameter estimation technique known as the recursive prediction error method is used for spectral estimation. The algorithm is formulated in the state space to incorporate the constraints imposed by the linear system. The linear... View full abstract»

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  • Optimum detection performance of passive coherence estimators

    Publication Year: 1985, Page(s):240 - 248
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1080 KB)

    Two-dimensional coherence processing is commonly used for passive detection in acoustic sensor systems. Modern coherence processors well suited for this purpose include the magnitude-squared coherence (MSC) estimator and the normalized correlation envelope (NCE) estimator. These are biased estimators whose performance characteristics are not well understood and are exceptionally difficult to analy... View full abstract»

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  • The application of the frequency domain LMS adaptive filter to split array bearing estimation with a sinusoidal signal

    Publication Year: 1985, Page(s):61 - 69
    Cited by:  Papers (4)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (824 KB)

    This paper considers the use of the frequency domain LMS adaptive filter in a split array sonar to estimate the bearing of a plane wave acoustic source radiating a sinusoidal signal. For such a signal, the bearing can be determined from the relative signal phase between split array outputs at the signal frequency. In this paper, the split array outputs are fast Fourier transformed and used as the ... View full abstract»

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  • The least squares estimation of time delay between two signals with unknown relative phase shift

    Publication Year: 1985, Page(s):308 - 309
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (248 KB)

    This correspondence addresses the problem of time delay estimation between two signals with an unknown constant relative phase shift. The method of time delay estimation for the pure delay case of Chan et al. [1] is applied here to derive the least squares estimator (LSE). An explicit expression for the LSE of the delay is obtained which is computationally less complex than the maximum likelihood ... View full abstract»

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  • Signal power upper bound in parameter estimation

    Publication Year: 1985, Page(s):315 - 316
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (248 KB)

    In this note, an upper bound on the signal power corresponding to a hypothesized model is derived assuming unknown signal and noise characteristics. A residual matrix is obtained from the observed data correlation matrix by subtracting a weighted outer product of the model vector. The upper bound is the largest signal power such that the residual correlation matrix stays nonegative. It is shown th... View full abstract»

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  • Implementation of the Gold-Rabiner pitch detector in a real time environment using an improved voicing detector

    Publication Year: 1985, Page(s):319 - 320
    Cited by:  Papers (2)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (272 KB)

    An implementation of Gold-Rabiner parallel processing pitch detector is described. Modifications to the original pitch detector that resulted in a more accurate voiced/unvoiced decision are presented. The modified pitch detector, along with all the tasks required by a real time, full duplex 2400 bit/s vocoder, have been implemented on a single Texas Instruments' TMS-320 microprocessor chip. View full abstract»

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  • A fast maximum likelihood algorithm for frequency estimation of a sinusoid based on Newton's method

    Publication Year: 1985, Page(s):77 - 89
    Cited by:  Papers (77)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (800 KB)

    A fast algorithm to estimate the frequency of a sinusoid is presented here. It is based on Newton's method for finding the root of an equation, and it is shown that under easily met conditions, the root mean-square error (RMSE) of the estimator is practically equal to the Cramer-Rao bound after only two iterations of Newton's method for all signal-to-noise ratios (SNR's) above threshold. The estim... View full abstract»

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  • Speech recognition based on zero crossing rate and energy

    Publication Year: 1985, Page(s):320 - 323
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (456 KB)

    This paper investigates the possibility of implementing a speaker-trained, small vocabulary, isolated word recognition system based on the zero crossing rate and energy features of the utterances. View full abstract»

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Aims & Scope

This Transactions ceased production in 1990. The current retitled publication is IEEE Transactions on Signal Processing.

Full Aims & Scope