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IEEE Transactions on Acoustics, Speech, and Signal Processing

Issue 3 • Date June 1983

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Displaying Results 1 - 25 of 48
  • [Front cover and table of contents]

    Publication Year: 1983, Page(s): 0
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    Freely Available from IEEE
  • Rational modeling by pencil-of-functions method

    Publication Year: 1983, Page(s):564 - 573
    Cited by:  Papers (34)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (820 KB)

    Pole-zero modeling of signals, such as an electromagnetic-scatterer response, is considered in this paper. It is shown by use of the pencil-of-functions theorem that a) the true parameters can be recovered in the ideal case [where the signal is the impulse reponse of a rational function H(z)], and b) the parameters are optimal in the functional dependence sense when the observed data are corrupted... View full abstract»

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  • Comments on "The reconstruction of a multidimensional sequence from the phase or magnitude of its Fourier transform"

    Publication Year: 1983, Page(s):738 - 739
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (259 KB)

    When one imposes a nonnegativity constraint, one usually can reconstruct a two-dimensional sequence of finite support from the modulus of its Fourier transform using an iterative algorithm, even when file initial estimate is an array of random numbers. View full abstract»

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  • [Back cover]

    Publication Year: 1983, Page(s): c4
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    Freely Available from IEEE
  • Zero sensitivity properties of the digital lattice filter

    Publication Year: 1983, Page(s):685 - 706
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1568 KB)

    The first-order movement of zeros given small perturbations of the PARCOR coefficients in the all-zero digital lattice filter is determined analytically. This is an extension of previous work characterizing sensitivity by integral spectral deviation measures, and is of interest since much is known about the perceptual effects of deviations in formant frequency location. The principal insight is th... View full abstract»

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  • A note on stability and lattice filter relations

    Publication Year: 1983, Page(s):770 - 772
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB)

    In this note we draw attention to an earlier result by Marden [2] for establishing the stability of linear discrete-time systems. The stability algorithm then provides a simple constructive realization of stable filters in lattice form. The class of unstable filters which cannot be represented in lattice form is also partially characterized. View full abstract»

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  • Digital image processing test patterns

    Publication Year: 1983, Page(s):763 - 766
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1464 KB)

    An easily generated test pattern is proposed. This digital test pattern is based on a linearly swept frequency modulated signal, thus the effects of an algorithm on the test pattern can be related to the two-dimensional frequency characteristics of the algorithm under test. The test pattern can be used to give a check of the algorithm frequency response along with providing aliasing information, s... View full abstract»

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  • A particular example of phase unwrapping using noisy experimental data

    Publication Year: 1983, Page(s):742 - 744
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB)

    Obtaining a smooth continuous function of phase from a distorted, sampled set of phase measurements is addressed. Provided the smooth continuous function can be written as a power series, all the important coefficients can be derived from phase difference measurments which have proved to be less affected by phase noise than the phase measured directly. This simple technique is shown to have advant... View full abstract»

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  • Comparison of the characteristics of linear least squares and orthonormal expansion in estimation

    Publication Year: 1983, Page(s):755 - 759
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (616 KB)

    It is frequently assumed in signal processing applications that expansion of a sequence by a weighted sum of mutually orthonormal sequences yields weighting coefficients that are identical to the estimates of the parameters which maximize the likelihood function if the linear sum of sequences is chosen as a model. Although this may be a valid approximation when signal-to-noise ratios are large, it... View full abstract»

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  • Electroacoustic analysis and enhancement of alaryngeal speech

    Publication Year: 1983, Page(s): 785
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (128 KB)

    First Page of the Article
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  • Some results in linear interpolation theory

    Publication Year: 1983, Page(s):746 - 749
    Cited by:  Papers (39)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (376 KB)

    Using a well-known form for the inverse of a symmetric Toeplitz matrix, some results in linear interpolation theory are derived. For an autoregressive process it is shown that interpolation at the mid-point of a data record yields the minimum interpolation error. Also, some results for infinite length interpolators are simply derived. View full abstract»

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  • Transform domain LMS algorithm

    Publication Year: 1983, Page(s):609 - 615
    Cited by:  Papers (295)  |  Patents (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (688 KB)

    The concept of transform domain adaptive filtering is introduced. In certain applications, filtering in the transform domain results in great improvements in convergence rate over the conventional time-domain adaptive filtering. The relationship between several existing frequency domain adaptive filtering algorithms is established. Applications of the discrete Fourier transform (DFT) and the discr... View full abstract»

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  • Stability of 2-D causal digital filters using the residue theorem

    Publication Year: 1983, Page(s):774 - 775
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (248 KB)

    In this correspondence stability of the 2-D causal digital filter is proven directly in terms of its inverse Z-transform. As a by-product one gets exponential bounds on the rate of convergence to zero of the filters impulse response. Using known transformations, these results may be extended to general 2-D recursive digital filters. View full abstract»

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  • Approximate expressions for the output signal-to-noise ratios for two types of cross correlators with correlated bandpass inputs

    Publication Year: 1983, Page(s):740 - 742
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB)

    Thus far, analytical expressions have not been developed for the output signal-to-noise ratio of a polarity coincidence correlator when the noise is correlated between the input channels. Approximate expressions are developed here for the output signal-to-noise ratios for two types of cross-correlator systems- one being the polarity coincidence correlator with a hard limiter in each input channel ... View full abstract»

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  • FIR filter design over a discrete powers-of-two coefficient space

    Publication Year: 1983, Page(s):583 - 591
    Cited by:  Papers (218)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (920 KB)

    FIR digital filters with discrete coefficient values selected from the powers-of-two coefficient space are designed using the methods of integer programming. The frequency responses obtained are shown to be superior to those obtained by simply rounding the coefficients. Both the weighted minimax and the weighted least square error criteria are considered. Using a weighted least square error criter... View full abstract»

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  • Restoring lost samples from an oversampled band-limited signal

    Publication Year: 1983, Page(s):752 - 755
    Cited by:  Papers (20)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (384 KB)

    When a band-limited signal is sampled at its Nyquist rate, each sample is independent. When sampled in excess of that rate, the samples become dependent. Thus, if one or more samples are lost, they can be recovered from the remaining known values. Using Gerchberg's iterative algorithm applied to interpolation, we derive a closed form expression by which a finite number of data points can be regain... View full abstract»

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  • An adaptive approach for time delay estimation of band-limited signals

    Publication Year: 1983, Page(s):780 - 784
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (496 KB)

    This correspondence concerns the use of the Widrow's adaptive least-mean-square (LMS) adaptive filter algorithm [1] for estimating the time delay between two-sensor outputs. Theoretical bias and estimation error are discussed. This analytical study provides a clue for determining the most effective way of processing the received signals through the adaptive filter. Computer simulation results are ... View full abstract»

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  • Linear phase IIR filter with equiripple stopband

    Publication Year: 1983, Page(s):744 - 746
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (272 KB)

    A simple technique of introducing transmission zeros into a low pass all-pole filter function to make its stopband transmission equiripple is described. The zeros are introduced through a transformation which maps the stopband of the filter onto the unit circle and the passband onto a segment of the real axis in the transformed plane. The technique is used to improve the loss characteristic of all... View full abstract»

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  • A digital adaptive filter using a memory-accumulator architecture: Theory and realization

    Publication Year: 1983, Page(s):541 - 549
    Cited by:  Papers (27)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1376 KB)

    This paper presents a novel approach to the construction of an adaptive filter making use of the so-called "distributed arithmetic" filter architecture originally suggested by Peled and Liu [7] for the realization of fixed response digital frequency filters. The technique uses only the operations of memory access, addition, and scaling, without the need for digital multiplication. Since multiplica... View full abstract»

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  • Observers for a class of 2-D filters

    Publication Year: 1983, Page(s):557 - 563
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (680 KB)

    In this paper, a 2-D observer is proposed for 2-D systems of the Fornasini-Marchesini type. Conditions are given for the existence of the proposed observer where both the case of known and unknown boundary conditions are considered. Design equations are developed for calculation of the observer matrices. Conditions are also given for being able to choose the form of the observer in the simple form... View full abstract»

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  • Scaling and roundoff noise in a class of multirate block structures

    Publication Year: 1983, Page(s):604 - 608
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (528 KB)

    Scaling and roundoff noise in block implementations of multirate filters are examined. Relationships between the dynamic range of the state variables, roundoff noise, the ratio of serial input and serial output sample rates, and the choice of the block length are investigated. Procedures for l2scaling, and measures for resultant roundoff noise in parallel normal forms and optimal state-... View full abstract»

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  • On hard errors in RNS architectures

    Publication Year: 1983, Page(s):772 - 774
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB)

    The residue number system (RNS) has been shown to be effective in realizing high-speed algorithms and transforms. Due to the modular nature of the numbering system, any hard error can be disastrous. In this work, hard RNS random errors are modeled and experimentally verified. View full abstract»

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  • Deconvolution of nonstationary seismic data using adaptive lattice filters

    Publication Year: 1983, Page(s):591 - 598
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1416 KB)

    This paper examines the results of the application of two lattice algorithm to the problem of adaptive deconvolution on non-stationary seismic data. A comparative study of the deconvolution performance of the recently proposed gradient lattice and least-squares lattice algorithms is made with the help of experiments on simulated and real seismic data. We show that the gradient lattice algorithm is... View full abstract»

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  • Demisyllable-based isolated word recognition system

    Publication Year: 1983, Page(s):713 - 726
    Cited by:  Papers (30)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1736 KB)

    A speaker-dependent speech recognition system is described for recognizing isolated word utterances using reference templates created by concatenating demisyllable (half-syllable) prototypes. Each word in a vocabulary is specified by one or more entries in a user-supplied lexicon containing a sequence of demisyllables drawn from a corpus of some 1000 units. Experiments were carried out with two ta... View full abstract»

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  • Critical band analysis-synthesis

    Publication Year: 1983, Page(s):656 - 663
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (736 KB)

    The formal derivation of a transformation which models the frequency selective properties (critical bandwidths) of the auditory system is developed. A parameterized family of constant-Q analysis-synthesis transform pairs is developed from a property of homogeneous functions. This formulation allows for a wide choice of selections for center frequencies, bandwidths, and filter shapes. A particular ... 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