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IEEE Transactions on Acoustics, Speech, and Signal Processing

Issue 1 • Date February 1976

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Displaying Results 1 - 20 of 20
  • [Front cover and table of contents]

    Publication Year: 1976, Page(s): 0
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    Freely Available from IEEE
  • Editorial

    Publication Year: 1976, Page(s): 1
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    Freely Available from IEEE
  • [Back cover]

    Publication Year: 1976, Page(s): c4
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    Freely Available from IEEE
  • Computation of the periods of forced overflow oscillations in digital filters

    Publication Year: 1976, Page(s):89 - 97
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (816 KB)

    For any given set of coefficient values for a second-order recursive digital filter, it is shown how to determine explicitly the periods of the forced response at which overflow oscillations can be sustained. The techniques that ate presented (which have quite general applicability) show for the first time how the concept of a P0matrix can be used to advantage in the study of nonlinear ... View full abstract»

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  • Auditory discrimination among speakers in the presence of masking noise

    Publication Year: 1976, Page(s):100 - 102
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (304 KB)

    Subjects judged whether two masked utterances were spoken by the same or different speakers in an experiment designed to measure the influence of masking on speaker discrimination. Performance decreased from 80 percent correct judgments for a signal-to-noise ratio of +20 dB to 65 percent correct for a signal-to-noise ratio of -10 dB. Multidimensional scaling was used to determine speakers most sen... View full abstract»

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  • A pitch-synchronous digital feature extraction system for phonemic recognition of speech

    Publication Year: 1976, Page(s):14 - 25
    Cited by:  Papers (11)  |  Patents (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1256 KB)

    The system described in this paper is subdivided into three main steps: pitch extraction, segmentation, and formant analysis. The pitch extractor uses an adaptive digital filter in time-domain transforming the speech signal into a signal similar to the glottal waveform. Using the levels of the speech signal and the differenced signal as parameters in time domain, the subsequent segmentation algori... View full abstract»

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  • Real-time digital hardware pitch detector

    Publication Year: 1976, Page(s):2 - 8
    Cited by:  Papers (83)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (736 KB)

    A high-quality pitch detector has been built in digital hard-ware and operates in real time at a 10 kHz sampling rate. The hardware is capable of providing energy as well as pitch-period estimates. The pitch and energy computations are performed 100 times/s (i.e., once per 10 ms interval). The algorithm to estimate the pitch period uses center clipping, infinite peak clipping, and a simplified aut... View full abstract»

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  • A stability theorem for discrete systems

    Publication Year: 1976, Page(s):87 - 89
    Cited by:  Papers (80)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (272 KB)

    A theorem is presented and proven, dealing with interesting properties of a polynomial D(z), being the denominator of the transfer function of a stable discrete system. The relationships to equivalent properties of a Hurwitz polynomial are considered. View full abstract»

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  • Blind deconvolution of spatially invariant image blurs with phase

    Publication Year: 1976, Page(s):58 - 63
    Cited by:  Papers (138)  |  Patents (27)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1928 KB)

    This paper is concerned with the digital estimation of the frequency response of a two-dimensional spatially invariant linear system through which an image has been passed and blurred. For the cases of uniform linear camera motion and an out-of-focus lens system it is shown that the power cepstrum of the image contains sufficient information to identify the blur. Methods for deblurring are present... View full abstract»

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  • A comparison of three methods of extracting resonance information from predictor-coefficient coded speech

    Publication Year: 1976, Page(s):8 - 14
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (888 KB)

    Three methods of extracting resonance information from predictor-coefficient coded speech are compared. The methods are finding roots of the polynomial in the denominator of the transfer function using Newton iteration, picking peaks in the spectrum of the transfer function, and picking peaks in the negative of the second derivative of the spectrum. A relationship was found between the bandwidth o... View full abstract»

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  • One-dimensional and two-dimensional generalised discrete fourier transforms

    Publication Year: 1976, Page(s):97 - 99
    Cited by:  Papers (28)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB)

    One-dimensional and two-dimensional generalized discrete Fourier transforms (GFT) are introduced. If a one-dimensional vector A is fractured into a two-dimensional matrix B, a one-dimensional GFT on A and a two-dimensional GFT on B give the same result and require the same number of operations to be computed. The result holds also for the DFT, as it is a particular case of the GFT. View full abstract»

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  • Modern sound reproduction

    Publication Year: 1976, Page(s):104 - 105
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB)

    First Page of the Article
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  • Walsh-like expansions and hadamard matrices

    Publication Year: 1976, Page(s):71 - 75
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (496 KB)

    We develop general methods for generating complete orthonormal systems of Walsh-like functions from certain permuted Kronecker products of Hadamard matrices. Some examples are included. View full abstract»

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  • On the hardware implementation of digital signal processors

    Publication Year: 1976, Page(s):76 - 86
    Cited by:  Papers (54)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (976 KB)

    An approach to the machine organization of dedicated hardware digital signal processors is proposed that is based on a specialized representation of the processing coefficients derived from the canonical signed-digit code. This leads to a realization requiting the minimum number of add/subtract operations to mechanize the required multiplications and additions. The proposed organization is shown t... View full abstract»

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  • Power spectra obtained from exponentially increasing spacings of sampling positions and frequencies

    Publication Year: 1976, Page(s):63 - 71
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (968 KB)

    An estimate of the spectrum is based on the Laplace transform which is approximated at exponentially spaced samples and analysis frequencies. In this approximation the ratio of the intervals between pairs of adjacent sampling positions is a constant greater than one. The choice of this constant is influenced by the desired analysis bandwidth and by sampling effects. If analysis frequencies are spa... View full abstract»

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  • Singular value decompositions and digital image processing

    Publication Year: 1976, Page(s):26 - 53
    Cited by:  Papers (144)  |  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5328 KB)

    The use of singular value decomposition (SVD) techniques in digital image processing is of considerable interest for those facilities with large computing power and stringent imaging requirements. The SVD methods are useful for image as well as quite general point spread function (impulse response) representations. The methods represent simple extensions of the theory of linear filtering. Image en... View full abstract»

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  • Physical acoustics principles and methods

    Publication Year: 1976, Page(s):105 - 106
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (384 KB)

    First Page of the Article
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  • Complex Haar transform

    Publication Year: 1976, Page(s):102 - 104
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB)

    A new discrete orthogonal transform called complex Haar transform (CHT) is defined and developed. Several of its properties, such as linearity, uniqueness, dyadic autocorrelation, and dyadic shift-invariant spectrum, are outlined. Efficient algorithms for fast computation of CHT and its inverse are developed. The effectiveness of CHT in signal and image processing applications is investigated. View full abstract»

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  • A note on upper bounds on limit cycles in digital filters

    Publication Year: 1976, Page(s):99 - 100
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (216 KB)

    An upper bound on the limit cycles due to multiplication roundoff in a fixed-point second-order digital filter is presented. View full abstract»

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  • Design and implementation of multirate digital filters

    Publication Year: 1976, Page(s):53 - 58
    Cited by:  Papers (38)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (616 KB)

    Two new design methods for infinite-duration impulse-response (IIR) multirate digital filters are introduced, and a state-variable implementation is given. One method is an extension of the impulse-invariant method and results in the direct synthesis of a multi-rate filter which realizes in discrete time the response of a continuous time circuit. The second method employs linear programming (LP) t... 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