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IEEE Transactions on Acoustics, Speech, and Signal Processing

Issue 6 • Date December 1978

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Displaying Results 1 - 21 of 21
  • [Front cover and table of contents]

    Publication Year: 1978, Page(s): 0
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    Freely Available from IEEE
  • Author's reply

    Publication Year: 1978, Page(s): 604
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (127 KB)

    First Page of the Article
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  • Comments on "A new realization scheme of digital filters--Row-wise addition configuration"

    Publication Year: 1978, Page(s): 604
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (127 KB)

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  • [Back cover]

    Publication Year: 1978, Page(s): c4
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    Freely Available from IEEE
  • Image restoration of space-variant blurs by sectioned methods

    Publication Year: 1978, Page(s):608 - 609
    Cited by:  Papers (27)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (296 KB)

    Previous work on sectional methods in image processing is extended to the processing of degradations produced by space-variant point spread functions. View full abstract»

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  • A new realization method for 2-D digital transfer functions

    Publication Year: 1978, Page(s):544 - 550
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (584 KB)

    This paper presents a general method for realizing an arbitrary 2-D digital transfer function. The realizations are obtained in terms of two types of delay blocks, adders and multipliers. The techniques presented here can be used to obtain infinitely many realizations of the same transfer function. View full abstract»

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  • Acoustic transfer function of the ocean for a motional source

    Publication Year: 1978, Page(s):493 - 501
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (920 KB)

    The motional-source transfer characteristics of long-range acoustic propagations are derived based on the discrete multipath propagation model predicted by geometrical acoustics. Parameters are those associated with the characteristic solutions of the eikonal equation. A modified transfer function is formulated which relates the received signal to a particularly useful transformation of the source... View full abstract»

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  • A pitch estimation algorithm for speech and music

    Publication Year: 1978, Page(s):597 - 604
    Cited by:  Papers (3)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (744 KB)

    We present an efficient pitch estimation algorithm which operates in the time domain by comparing features extracted from the signal being analyzed. The algorithm uses both primary features (extracted directly from the signal) and secondary features (derived by combining several primary features to reduce the effect of variations in the signal envelope). We relate the algorithm both analytically a... View full abstract»

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  • Memory and time improvements in a dynamic programming algorithm for matching speech patterns

    Publication Year: 1978, Page(s):583 - 586
    Cited by:  Papers (20)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (488 KB)

    Recently, dynamic programming has been found useful for performing nonlinear time warping in speech recognition. Although considerably faster than exhaustive search procedures, the dynamic programming procedure nevertheless requires substantial computation. Also, considerable storage is normally required for reference prototypes necessary in the matching process. This paper is concerned with metho... View full abstract»

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  • A posteriori estimation of vocal tract length

    Publication Year: 1978, Page(s):571 - 574
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (416 KB)

    Various estimators of vocal tract length, both iterative and noniterative, have been proposed and used for various speech processing and speech pathological purposes. The results of the accuracy of these methods are compared with an a posteriori estimator and others. The a posteriori estimator is shown to provide nearly the same accuracy as the more complex and computation-time costly iterative al... View full abstract»

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  • Some novel windows and a concise tutorial comparison of window families

    Publication Year: 1978, Page(s):501 - 507
    Cited by:  Papers (56)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (464 KB)

    Some novel windows are introduced. A comparison of these and the well-known windows in terms of their frequency domain properties is given. It is concluded that Kaiser, modified Kaiser, Tukey, and three-coefficient window families appear to be the best of the known windows of 6, 12, and 18 dB/oct decay rates. View full abstract»

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  • Cal-sal Walsh-Hadamard transform

    Publication Year: 1978, Page(s):605 - 607
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (216 KB)

    Walsh-Hadamard matrices are rearranged such that the first half of the rows represents cal functions in increasing order of sequency whereas the second half represents sal functions in decreasing order of sequency. The transform based on this rearrangement is called the Cal-Sal Walsh-Hadamard transform or (WHT)cs. General expressions for developing the elements of these matrices are dev... View full abstract»

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  • Considerations in dynamic time warping algorithms for discrete word recognition

    Publication Year: 1978, Page(s):575 - 582
    Cited by:  Papers (167)  |  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (832 KB)

    The technique of dynamic time warping for time registration of a reference and test utterance has found widespread use in the areas of speaker verification and discrete word recognition. As originally proposed, the algorithm placed strong constraints on the possible set of dynamic paths-namely it was assumed that the initial and final frames of both the test and reference utterances were in exact ... View full abstract»

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  • Calculation of narrow-band spectra by direct decimation

    Publication Year: 1978, Page(s):529 - 534
    Cited by:  Papers (13)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (568 KB)

    The calculation of the spectrum of a narrow-band signal which is embedded in a broad-band sequence usually requites substantial computation and storage if executed by performing an FFT or DFT's directly on the broad-band sequence. In this paper a new scheme using direct decimation is proposed which computes the narrow-band spectrum with good resolution while requiring only modest computation and s... View full abstract»

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  • Stability of general two-dimensional recursive digital filters

    Publication Year: 1978, Page(s):550 - 560
    Cited by:  Papers (55)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1176 KB)

    Two-dimensional recursive filters are defined from a different point of view. A general stability preserving mapping theorem is presented which allows most recursive filters of a particular type to be mapped into any other type of recursive filter. In particular, any type of filter can be mapped into a first-quadrant filter. This mapping is used to prove a number of general stability theorems. Amo... View full abstract»

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  • A fast computation of complex convolution using a hybrid transform

    Publication Year: 1978, Page(s):566 - 570
    Cited by:  Papers (5)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (456 KB)

    In this paper it is shown that the cyclic convolution of complex values can be performed by a hybrid transform. This transform is a combination of a Winograd algorithm and a fast complex integer transform developed previously by the authors. This new hybrid algorithm requires fewer multiplications than any previously known algorithm. View full abstract»

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  • The design of optimal multirate bandpass and bandstop filters

    Publication Year: 1978, Page(s):534 - 543
    Cited by:  Papers (20)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (792 KB)

    Narrow-band bandpass and bandstop filters are inherently of high order and require a large computation rate. A multirate filter using decimators and interpolators can be designed to have bandpass or bandstop characteristics, often with a much smaller computation rate. This paper develops rules for designing such a filter by placing constraints on the filter approximation error and the aliasing err... View full abstract»

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  • Cubic splines for image interpolation and digital filtering

    Publication Year: 1978, Page(s):508 - 517
    Cited by:  Papers (428)  |  Patents (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (904 KB)

    This paper presents the use of B-splines as a tool in various digital signal processing applications. The theory of B-splines is briefly reviewed, followed by discussions on B-spline interpolation and B-spline filtering. Computer implementation using both an efficient software viewpoint and a hardware method are discussed. Finally, experimental results are presented for illustrative purposes in tw... View full abstract»

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  • Spectral smoothing technique in PARCOR speech analysis-synthesis

    Publication Year: 1978, Page(s):587 - 596
    Cited by:  Papers (36)  |  Patents (22)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1088 KB)

    In linear predictive analysis of speech, voice periodicity influences formant frequency and bandwidth estimation accuracy. One of the most serious errors in estimating formant parameters is bandwidth underestimation that causes a quality difference between synthetic and natural speech. In this paper, the spectral smoothing technique (SST), using a lag window, is introduced in an autocorrelation me... View full abstract»

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  • Short-time spectral analysis with the conventional and sliding CZT

    Publication Year: 1978, Page(s):561 - 566
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (688 KB)

    Two sequential short-time spectral analysis techniques, amenable to nonrecursive filter implementation, are the conventional chirp-z-transform (CZT) realization of the discrete Fourier transform and the sliding CZT realization of the discrete sliding Fourier transform. This paper presents a comparative study of frame rate limitations, windowing, time and frequency resolution, spectral correlation,... View full abstract»

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  • Linear prediction in cascade form

    Publication Year: 1978, Page(s):518 - 528
    Cited by:  Papers (35)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (936 KB)

    The autocorrelation and covariance methods of linear prediction are formulated in terms of an inverse digital filter in cascade form, rather than the traditional direct form, to allow pole locations in the system model to be readily estimated and constrained. Iterative solution of the corresponding nonlinear normal equations is described. Applications to speech analysis and the compensation of bio... 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