By Topic

IEEE Transactions on Acoustics, Speech, and Signal Processing

Issue 2 • February 1987

Filter Results

Displaying Results 1 - 19 of 19
  • [Front cover and table of contents]

    Publication Year: 1987, Page(s): 0
    Request permission for commercial reuse | PDF file iconPDF (172 KB)
    Freely Available from IEEE
  • Corrections to "On the evaluation of double square integral in the (s1,s2) complex biplane"

    Publication Year: 1987, Page(s): 228
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (144 KB)

    First Page of the Article
    View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • [Back cover]

    Publication Year: 1987, Page(s): c4
    Request permission for commercial reuse | PDF file iconPDF (825 KB)
    Freely Available from IEEE
  • Remarks on certain criteria for detection of number of signals

    Publication Year: 1987, Page(s):129 - 132
    Cited by:  Papers (27)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB)

    In this paper, we derive the asymptotic distribution of the logarithm of the likelihood ratio statistic for testing the hypothesis that the number of signals is equal to q against the alternative that it is equal to k (specified) for a special case. This distribution is not chi-square. The above statistic also rises in studying consistency property of the MDL criterion and AIC for detection of the... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Discrete radon transform

    Publication Year: 1987, Page(s):162 - 172
    Cited by:  Papers (181)  |  Patents (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1064 KB)

    This paper describes the discrete Radon transform (DRT) and the exact inversion algorithm for it. Similar to the discrete Fourier transform (DFT), the DRT is defined for periodic vector-sequences and studied as a transform in its own right. Casting the forward transform as a matrix-vector multiplication, the key observation is that the matrix-although very large-has a block-circulant structure. Th... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Analysis of error in reconstruction of two-dimensional signals from irregularly spaced samples

    Publication Year: 1987, Page(s):173 - 180
    Cited by:  Papers (45)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (824 KB)

    We consider the problem of estimating a band-limited two-dimensional (2-D) signal based on a finite set of irregularly spaced samples. We derive the minimum mean-squared error estimator of the form of a sum of weighted interpolating functions that are identical in shape but are centered at the irregularly spaced sample points, and show that this estimator is identical to the minimum energy band-li... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Representation of images through group-delay functions

    Publication Year: 1987, Page(s):237 - 240
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (520 KB)

    In this correspondence we propose a new representation for images through the use of group-delay functions. We provide algorithms for the computation of the group-delay functions and for the recovery of images from them. We give several examples to show that most of the perceptually significant information of an image is retained in this representation. We derive the minimum phase equivalent image... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Some aspects of an adaptive digital notch filter with constrained poles and zeros

    Publication Year: 1987, Page(s):158 - 161
    Cited by:  Papers (45)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (440 KB)

    The paper derives the range of filter parameters which can be used for monitoring purposes in adaptive notch filtering applications. The nonconvergence problem associated with the stochastic Gauss-Newton algorithm is illustrated, and the paper proposes the use of a less efficient recursive estimation algorithm-the appropriate maximum likelihood method-to overcome this problem. Results from simulat... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A fast computational approach to the design of block quantization

    Publication Year: 1987, Page(s):235 - 237
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (416 KB)

    The computational approach to bit allocation based on marginal analysis has been found to achieve performance superior to that of the rate-distortion theoretic approach. However, the computational complexity of marginal analysis is also much higher. A fast computational method is proposed to reduce the heavy computational burden. This new method also takes into account the non-Shannon quantization... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Approaches toward restoration of bilinearly degraded images

    Publication Year: 1987, Page(s):181 - 197
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1368 KB)

    In response to the practical need for restoring images which are degraded by systems which are bilinear, this paper focuses on the development and application of tools required for this purpose. When the blurring phenomenon can be modeled by a shift-variant bilinear system, the data restoration problem can be most conveniently formulated as a special system of linear equations with nonnegative coe... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A lattice-ladder structure for multipulse linear predictive coding of speech

    Publication Year: 1987, Page(s):228 - 231
    Cited by:  Papers (1)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (384 KB)

    This correspondence presents an order-recursive algorithm for the computation of the model parameters required in multipulse linear predictive coding (LPC) or speech in the case of autocorrelation method. Its computational complexity is 2p2+ 4p multiplications and divisions, where p + 1 is the number of the model parameters. It is also shown that the developed algorithm leads, in a natu... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An order-recursive algorithm for estimating pole-zero models

    Publication Year: 1987, Page(s):154 - 157
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB)

    This paper deals with the pole-zero estimation of a discrete-time linear system from a measured input-output record. It is shown that the minimization of the squared equation error for a recursive (n, n - 1) filter can be implemented by an order-recursive algorithm using scalar products of records derived from the data. The algorithm is based on the Gram-Schmidt orthogonalization of an intertwined... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Computing projections of digital images in image processing pipeline architectures

    Publication Year: 1987, Page(s):198 - 207
    Cited by:  Papers (10)  |  Patents (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1432 KB)

    This paper deals with the problem of computing projections of digital images. The novelty of our contribution is that we present algorithms which are suitable for implementation in general purpose image processing and image analysis pipeline architectures. No random access of the image memory is necessary. We propose some new pipeline configurations which achieve a remarkable degree of parallelism... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Text-dependent speaker verification using vector quantization source coding

    Publication Year: 1987, Page(s):133 - 143
    Cited by:  Papers (25)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1176 KB)

    Several vector quantization approaches to the problem of text-dependent speaker verification are described. In each of these approaches, a source codebook is designed to represent a particular speaker saying a particular utterance. Later, this same utterance is spoken by a speaker to be verified and is encoded in the source codebook representing the speaker whose identity was claimed. The speaker ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A nonstationary model for the analysis of transient speech signals

    Publication Year: 1987, Page(s):226 - 228
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (336 KB)

    In this correspondence, a model is presented for the analysis of transient speech signals, which is based on a sum of the impulsive responses corresponding to a number of poles with time-dependent parameters. The aim of this analysis is to obtain discriminative features of the different transient elements of speech. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A differential equation approach to maximum entropy image reconstruction

    Publication Year: 1987, Page(s):208 - 218
    Cited by:  Papers (16)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1392 KB)

    A new algorithm is developed for solving the maximum entropy (ME) image reconstruction problem. The problem is reduced to solving a system of ordinary differential equations with appropriate initial values. The choice of initial values closely relates to the satisfaction of constraints, and we show how initial values are determined. The algorithm does not involve any optimization method. Instead o... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Design of FIR filters in the complex domain

    Publication Year: 1987, Page(s):144 - 153
    Cited by:  Papers (157)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (968 KB)

    The design of FIR digital filters with a complex-valued desired frequency response using the Chebyshev error is investigated. The complex approximation problem is converted into a real approximation problem which is nearly equivalent to the complex problem. A standard linear programming algorithm for the Chebyshev solution of overdetermined equations is used to solve the real approximation problem... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • On the accuracy of the Kumaresan-Tufts method for estimating complex damped exponentials

    Publication Year: 1987, Page(s):231 - 235
    Cited by:  Papers (46)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (544 KB)

    Recently, Kumaresan and Tufts (KT) presented a method for estimating the parameters of damped exponential waveforms in additive white noise. The KT method uses singular value decomposition (SVD) of the data matrix, with truncation and backward prediction to improve the accuracy of the estimates. The KT method was demonstrated to have a very good performance, in comparison to traditional methods us... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A CCITT standard 32 kbit/s ADPCM LSI codec

    Publication Year: 1987, Page(s):219 - 225
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (928 KB)

    An LSI ADPCM codec, which is based on the CCITT standard 32 kbit/s algorithm, has been developed. After thoroughly investigating complex CCITT specifications for arithmetic operations, a software controllable custom LSI processor approach is chosen to reduce hardware amount and power dissipation. The processor architecture is optimized for the CCITT algorithm. A reconfigurable pipeline multiplier-... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.

Aims & Scope

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

Full Aims & Scope