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IEEE Transactions on Acoustics, Speech, and Signal Processing

Issue 1 • Date February 1984

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Displaying Results 1 - 25 of 34
  • [Front cover and table of contents]

    Publication Year: 1984, Page(s): 0
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    Freely Available from IEEE
  • Correction to "The 'unity-lagged' short-time spectrum of a narrow-band Gaussian process" ¡

    Publication Year: 1984, Page(s): 189
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (72 KB)

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  • [Back cover]

    Publication Year: 1984, Page(s): c4
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    Freely Available from IEEE
  • A roundoff error analysis of the LMS adaptive algorithm

    Publication Year: 1984, Page(s):34 - 41
    Cited by:  Papers (143)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (824 KB)

    The steady state output error of the least mean square (LMS) adaptive algorithm due to the finite precision arithmetic of a digital processor is analyzed. It is found to consist of three terms: 1) the error due to the input data quantization, 2) the error due to the rounding of the arithmetic operations in calculating the filter's output, and 3) the error due to the deviation of the filter's coeff... View full abstract»

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  • Optimal choice of intermediate latching to maximize throughput in VLSI circuits

    Publication Year: 1984, Page(s):28 - 33
    Cited by:  Papers (10)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (656 KB)

    In many computational tasks, especially in signal processing, it is the throughput that is important, rather than the latency, or delay. If a special-purpose VLSI chip is designed for a particular signal processing task, such as FIR filtering, for example, the maximum clock rate, and hence throughput, is determined by the depth of the combinational logic between registers and the time required for... View full abstract»

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  • Design of inherently stable two-dimensional recursive filters from one-dimensional filters

    Publication Year: 1984, Page(s):164 - 168
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (480 KB)

    A novel method is described for the design of two-dimensional filters from one-dimensional filters while preserving stability. The proposed approach has several advantages when compared to other known transformation techniques. Because the numerator and the denominator are transformed independently, more free parameters are available to approximate a desired filter response. A relation between the... View full abstract»

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  • Delay estimation by expected value

    Publication Year: 1984, Page(s):19 - 27
    Cited by:  Papers (16)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (824 KB)

    The estimation of time delay between narrowband signals is discussed. A minimum mean square error (MMSE) estimator is used that utilizes the maximum likelihood (ML) window derived by Knapp and Carter in obtaining the required conditional probability density function from which the delay estimate is calculated. The results of simulations using a narrowband signal are presented which evaluate and co... View full abstract»

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  • Array configurations for dynamic time warping

    Publication Year: 1984, Page(s):119 - 128
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (936 KB)

    In a previous paper an array architecture was revealed for real-time dynamic time warping. An integrated processor was designed and built for use in such an array. This paper discusses reduced arrays which allow a continuum of tradeoffs between speed and circuit complexity. Reduced arrays permit design of fixed-size systems for problems which are unbounded in size. View full abstract»

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  • A generalized window approach to spectral estimation

    Publication Year: 1984, Page(s):7 - 19
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1096 KB)

    An approach to spectral estimation is developed. The estimator is constructed from only two starting requirements: closeness to an original autocorrelation estimate and planarity, i.e., smoothness, of the corresponding spectral estimator. The inverse of the variance of the original autocorrelation estimate enters as a weight. By making various a priori assumptions about the variance, and by select... View full abstract»

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  • On the optimum tapered burg algorithm

    Publication Year: 1984, Page(s):185 - 186
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (280 KB)

    Kaveh and Lippert's recently published optimum window technique is reexamined from a frequency-domain viewpoint. It is shown that the overall variance of the error in the frequency estimator is dominated by contributions from those frequency regions near 0 and π where the error model itself is unreliable. Excluding these regions from the variance calculations reveals that the optimum window m... View full abstract»

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  • A two-parameter family of weights for nonrecursive digital filters and antennas

    Publication Year: 1984, Page(s):108 - 118
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1048 KB)

    We derive analytically a two-parameter family of weights for use in finite duration nonrecursive digital filters and in finite aperture antennas. This family of weights is based on the Gegenbauer orthogonal polynomials, which are a generalization of both Legendre and Chebyshev polynomials. It is shown that one parameter controls the main lobewidth and the other parameter controls the sidelobe tape... View full abstract»

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  • Synthesis part of a "Log area ratio" vocoder implemented on a signal-processing microcomputer

    Publication Year: 1984, Page(s):183 - 185
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB)

    The synthesis part of an LAR vocoder was programmed on a fast signal-processing microcomputer TMS 320 (Texas Instruments) connected to a laboratory computer and to a D/A converter via two parallel ports. The device replaces an older (mainly analog) one in a plug-and software-compatible way. The hardware and program architectures are described. More complicated synthesizers modeling the vocal tract... View full abstract»

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  • Estimating acoustic attenuation from reflected ultrasound signals: Comparison of spectral-shift and spectral-difference approaches

    Publication Year: 1984, Page(s):1 - 6
    Cited by:  Papers (56)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (728 KB)

    The acoustic attenuation coefficient of soft biological tissue has been observed to have an increasing linear-with-frequency attenuation characteristic with a slope, denoted by β, that varies with the disease condition of the liver. Hence, it would be diagnostically useful to estimate the value of β from reflected ultrasound signals. Two approaches for estimating β are examined: the... View full abstract»

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  • Digital communications

    Publication Year: 1984, Page(s): 190
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  • Which is the better entropy expression for speech processing: -S log S or log S?

    Publication Year: 1984, Page(s):129 - 137
    Cited by:  Papers (50)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1024 KB)

    In maximum entropy spectral analysis (MESA), one maximizes the integral of \log S(f) , where S(f) is a power spectrum. The resulting spectral estimate, which is equivalent to that obtained by linear prediction and other methods, is popular in speech processing applications. An alternative expression, -S(f)\log S(f) , i... View full abstract»

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  • Stochastic convergence properties of the adaptive gradient lattice

    Publication Year: 1984, Page(s):102 - 107
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (600 KB)

    A stochastic fixed-point theorem is used as a basis for the study of stochastic convergence properties (in mean-squares sense) of the adaptive gradient lattice filter. Such properties include conditions on the stepsize in the adaptive algorithm and analytic expressions for the misadjustment and convergence rate. Our results indicate that the limits on the stepsize are stricter than the ones obtain... View full abstract»

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  • Iterative nonparametric spectrum estimation

    Publication Year: 1984, Page(s):59 - 69
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1064 KB)

    Starting with the traditional spectrum estimation technique, a new iterative nonparametric algorithm is developed. In each iteration of the algorithm, the effect of the previous spectral estimate is removed from the original signal by inverse filtering by a minimum-phase impulse response to obtain a residual signal whose spectral characteristics are then estimated to improve the previous estimate.... View full abstract»

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  • Image display techniques using the cosine transform

    Publication Year: 1984, Page(s):173 - 177
    Cited by:  Papers (15)  |  Patents (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (576 KB)

    Transform coding has the ability to rapidly display a picture of low resolution by inverse transformation of a few of the low sequency coefficients only. Picture resolution is then progressively built up as more coefficients are received and decoded. In this paper, different sequences of transmitting the coefficients are investigated to find one which achieves the best subjective quality with the ... View full abstract»

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  • A coefficient fabrication error model for sampled data filters

    Publication Year: 1984, Page(s):70 - 80
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (896 KB)

    A coefficient fabrication error model is derived for sampled data filters that requires the first two moments of the random perturbed filter coefficients as inputs. Two examples of model usage are given for an electrooptical processor (EOP) implementation of a finite impulse response (FIR) filter. Both types of EOP coefficient fabrication errors (mask aperture misalignment and mask aperture dimens... View full abstract»

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  • Transition formulas for zero-pole modeling

    Publication Year: 1984, Page(s):178 - 180
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    Using the equation error formulation, transitional formulas are developed that provide solutions to the ARMA modeling problem when given solutions to either the AR or MA models. These formulas are useful in estimating ARMA models, and they also provide insight into how the more general ARMA modeling problem is related to the special cases of AR and MA modeling. View full abstract»

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  • Accurate depth determination in well logging

    Publication Year: 1984, Page(s):42 - 48
    Cited by:  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (752 KB)

    In well logging, where a measuring instrument or "tool" is suspended from a cable in a well bore, accurate information on the instantaneous depth of file tool is difficult to obtain because the tool tends to bounce up and down as the cable is drawn up the borehole. A particularly difficult situation is "stick and slip," i.e., where the sonde stops momentarily, and then jumps forward as cable tensi... View full abstract»

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  • Design of antialiasing patterns for time-sequential sampling of spatiotemporal signals

    Publication Year: 1984, Page(s):137 - 144
    Cited by:  Papers (20)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (880 KB)

    The aliasing that results from time-sequential sampling of spatiotemporal signals is strongly dependent on the order in which the spatial points are sampled. To design sampling patterns that reduce aliasing, the sequence of sampling points is mapped into several shorter subsequences via the chinese remainder theorem. A pairwise exchange algorithm then finds the best ordering of each subsequence. T... View full abstract»

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  • A distributed arithmetic MFIR filter

    Publication Year: 1984, Page(s):186 - 189
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB)

    The design of high-order FIR filters is considered in the context of speed and complexity. It is shown that by using the multiplicative form of the FIR and the distributed filter architecture, high-order high-speed filters can be designed which have significantly reduced hardware and circuit board requirements. View full abstract»

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  • Mechanical filters in electronics

    Publication Year: 1984, Page(s): 191
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (176 KB)

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  • Statistical analysis of Pisarenko's method for sinusoidal frequency estimation

    Publication Year: 1984, Page(s):95 - 101
    Cited by:  Papers (34)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (520 KB)

    Statistical analysis is performed for Pisarenko's method of sinusoidal frequency estimation by using the periodogram technique. Under the assumption that the data consist of several sinusoids plus white noise, we give an asymptotic expression of the error variance of the sinusoidal frequency estimator. Also, a modified method is proposed. This is computationally efficient but the statistical prope... 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