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IEEE Transactions on Acoustics, Speech, and Signal Processing

Issue 3 • 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 (35)
    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
  • A formant estimating equation useful in a graphically controlled speech synthesizer

    Publication Year: 1983, Page(s):736 - 738
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (384 KB)

    A problem encountered in controlling a digital speech synthesizer using a digitizing surface is mapping the necessary controls into a two-dimensional space. The first two formant frequencies are readily associated with the x and y dimensions of the tablet surface, but higher formants must either be fixed or estimated based on the first two. This correspondence describes a method for estimating the... View full abstract»

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  • An approximation theoretic approach to maximum entropy spectral analysis

    Publication Year: 1983, Page(s):734 - 736
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB)

    It is shown that the theory of best approximation in weighted mean square can be used to provide a mathematical foundation for the analysis and extension of the maximum entropy method of spectral analysis. View full abstract»

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  • A statistical approach to the design of an adaptive self-normalizing silence detector

    Publication Year: 1983, Page(s):678 - 684
    Cited by:  Papers (8)  |  Patents (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1040 KB)

    Silence detection is an important aspect of automatic speech recognition. In this paper a silence detector is described which classifies each frame of an utterance as being silent or nonsilent. No attempt is made to determine the endpoints of words. The silence detector is based upon a statistical test and has the properties that it is adaptive, self-normalizing, speaker independent, and script in... View full abstract»

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  • Performance model for square law detectors followed by accumulators and an ORing device

    Publication Year: 1983, Page(s):759 - 761
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB)

    A mathematical model is developed to characterize the performance of square law detectors followed by accumulators and an ORing device. The performance of a Gaussian signal in Gaussian noise is determined for a specified number of channels ORed. The ORing loss is computed as a function of the number of samples in the accumulator preceding the ORing device for various fixed input signal-to-noise ra... View full abstract»

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  • Finding the zeros of linear phase FIR frequency sampling digital filters

    Publication Year: 1983, Page(s):729 - 734
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (480 KB)

    The need for finding the zeros of FIR filters often arises in digital signal processing applications. If we want to convert linear phase finite-impulse response (FIR) filters into minimum phase FIR filters [1], [2], the problem of finding the zeros of the filter is encountered. This problem has been addressed in [3], but not solved. Here we introduce the idea of using frequency sampling filters fo... View full abstract»

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  • Linear phase IIR filter with equiripple stopband

    Publication Year: 1983, Page(s):744 - 746
    Cited by:  Papers (5)
    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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  • Nonstationary spectral modeling of voiced speech

    Publication Year: 1983, Page(s):664 - 678
    Cited by:  Papers (47)  |  Patents (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1600 KB)

    The main purpose of this paper is to present a novel model for voiced speech. The classical model, which is being used in many applications, assumes local stationarity, and consequently imposes a simple and well known line structure to the short-time spectrum of voiced speech. The model derived in this paper allows for local non-stationarities not only in terms of pitch perturbations, but in terms... 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 (3)
    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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  • 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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  • 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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  • 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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  • 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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  • Digital integrators using optimal FIR compensators

    Publication Year: 1983, Page(s):726 - 729
    Cited by:  Papers (6)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (488 KB)

    An important class of digital integration algorithms is examined. The complete integration filter is partitioned into a feedback filter combined with a finite duration impulse response (FIR) part which may be thought of as a cascaded compensator subfilter. New integrator designs are obtained using linear programming to achieve minimax optimization of the linear-phase FIR compensator, constrained t... 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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  • The effect of correlation on accumulated detection probability

    Publication Year: 1983, Page(s):536 - 540
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (416 KB)

    A sonar model frequently used for accumulating probability of detection over a succession of independent opportunities is modified by the introduction of correlation between opportunities. Two Guassian models, Markov and unit-memory, are investigated. Monte Carlo calculations of accumulated detection probability and mean hold time are presented. The calculations of mean hold time can be used to es... View full abstract»

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  • Transform domain LMS algorithm

    Publication Year: 1983, Page(s):609 - 615
    Cited by:  Papers (296)  |  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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  • A distributed Gray-Markel filter

    Publication Year: 1983, Page(s):761 - 763
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (376 KB)

    The distributed arithmetic philosophy has been shown to support very high data rate linear shift-invariant filtering. These filters traditionally exhibit a Direct I structure. A distinctly different architecture, namely the Gray-Markel filter, is studied in this note. Efficient and high-speed distributed arithmetic Gray-Markel filters are shown to be feasible. 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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  • 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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  • Desgin and comparative study of some sequential jump detection algorithms for digital signals

    Publication Year: 1983, Page(s):521 - 535
    Cited by:  Papers (67)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1312 KB)

    The purpose of this paper is to analyze the behavior of several jump detection algorithms when applied to the same real data (geophysical signals) and to compare these algorithms from different points of view: complexity, efficiency, robustness, and ability to characterize the detected jumps. Three types of algorithms are investigated: "filtered derivatives" detectors, cumulative sum (cusum) tests... 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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Aims & Scope

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

Full Aims & Scope