IEEE Transactions on Acoustics, Speech, and Signal Processing

Volume 31 Issue 1 • February 1983

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Displaying Results 1 - 25 of 54
  • [Front cover and table of contents]

    Publication Year: 1983, Page(s): 0
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    Freely Available from IEEE
  • On the approximation of FIR by IIR digital filters

    Publication Year: 1983, Page(s):28 - 34
    Cited by:  Papers (6)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (690 KB)

    Kaiser's empirical formula for finite impulse response (FIR) digital filter length, as a function of transition width and rejection band loss (together with theI_{0}-sinhwindow function), provides a simple FIR filter design algorithm. Recent developments in time series analysis provide a theoretical procedure for selecting the numerator and denominator orders of an infinite impulse resp... View full abstract»

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  • Modeling of multichannel time series and extrapolation of matrix-valued autocorrelation sequences

    Publication Year: 1983, Page(s):45 - 55
    Cited by:  Papers (23)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (988 KB)

    This paper deals with multichannel time series, and extends the autocorrelation method for fitting the time series from the nondegenerate case to the general case. We shall show that the AR model obtained by solving the normal equations is always stable even in the degenerate case. The multichannel Levinson algorithm for solving the normal equations is extended from the nondegenerate case to the g... View full abstract»

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  • A highly concurrent algorithm and pipeleined architecture for solving Toeplitz systems

    Publication Year: 1983, Page(s):66 - 76
    Cited by:  Papers (104)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1403 KB)

    The design of VLSI parallel processors requires a fundamental understanding of the parallel computing algorithm and an appreciation of the implementational constraint on communications. Based on such consideration, this paper develops a highly concurrent Toeplitz system solver, featuring maximum parallelism and localized communication. More precisely, a highly parallel algorithm is proposed which ... View full abstract»

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  • Thinning digital filters: A piecewise-exponential approximation approach

    Publication Year: 1983, Page(s):105 - 113
    Cited by:  Papers (36)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (956 KB)

    An algorithm is presented for designing finite impulse response (FIR) recursive digital filters that require few multiplies to produce good frequency response, The process of reducing the number of multiplies needed to implement a digital filter is called thinning. This thinning algorithm uses dynamic programming techniques to find the best least-squares piecewise-exponential approximation to a de... View full abstract»

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  • Optimal estimation for band-limited signals including time domain considerations

    Publication Year: 1983, Page(s):113 - 122
    Cited by:  Papers (31)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1080 KB)

    The problem of estimation for band-limited signals is investigated. The desired estimate is based on a finite number of time samples taken from a measurement interval of length TM. With no additional information, the estimate must be based on these samples alone. When the signal is band-limited with normalized bandwidth β, this provides additional information which is used to impro... View full abstract»

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  • Causal invertibility and stability of asymmetric half-plane digital filters

    Publication Year: 1983, Page(s):195 - 201
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (819 KB)

    In this paper the following question is studied: supposeR in l_{1}(Z^{2}), and let Shdenote the semigroup generated by the support of h; when does h have an inverse in l1(Sh)? From an engineering viewpoint the question can be asked as follows: When does a causal stable filter have a causal stable inverse? In this paper we develop a mathematical framework... View full abstract»

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  • Comments on "Selection criteria for efficient implementation of FFT algorithms

    Publication Year: 1983, Page(s): 206
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (133 KB)

    First Page of the Article
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  • Foreword

    Publication Year: 1983, Page(s):250 - 251
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    Freely Available from IEEE
  • A compact, flexible LPC vocoder based on a commercial signal processing microcomputer

    Publication Year: 1983, Page(s):252 - 257
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (851 KB)

    A very small, flexible, high-quality, full-duplex 2.4-kbit/s linear predictive vocoder has been implemented with commercially available integrated circuits. This fully digital realization is based on a distributed signal processing architecture employing three Nippon Electric Company (NEC) μPD7720 signal processing interface (SPI) single-chip microcomputers. One SPI implements the LPC analyze... View full abstract»

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  • [Back cover]

    Publication Year: 1983, Page(s): c4
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    Freely Available from IEEE
  • Magnitude-squared conherence function estimation: An adaptive approach

    Publication Year: 1983, Page(s):137 - 142
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (672 KB)

    This paper concerns an adaptive approach for estimating the magnitude-squared coherence (MSC) function via Widrow's least-mean-square (LMS) algorithm. Analytical expressions for the bias and variance of the estimate so obtained are derived for the case when the input signals are stationary. Some computer simulation results are also included for both stationary and nonstationary signals. View full abstract»

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  • A single CMOS speech synthesis chip and new synthesis techniques

    Publication Year: 1983, Page(s):335 - 338
    Cited by:  Papers (1)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (528 KB)

    A single CMOS speech synthesis LSI, organized as a special purpose microcomputer containing program ROM, RAM, 32K of speech data ROM, and a D/A converter is described in this paper. The chip utilizes new speech synthesis techniques to generate high quality speech, reproducing the natural inflection and intonation of the speaker, and has been used to produce speech at a bit rate of about 3 kbits/s. View full abstract»

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  • Time-domain measurement of vented-box loudspeaker system parameters

    Publication Year: 1983, Page(s):1 - 8
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (776 KB)

    In a recent paper, a time-domain method for the measurement of the parameters of a loudspeaker driver was described. Here we extend the technique to the more interesting problem of measuring the parameters of a vented-box louspeaker system. We use the pencil-of-functions technique, and show that all the parameters of the electrical analog can be determined straightforwardly from a single time-doma... View full abstract»

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  • Large sample identification and spectral estimation of noisy multivariate autoregressive processes

    Publication Year: 1983, Page(s):76 - 82
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (728 KB)

    When large samples are available, identification and spectral estimation problems of a noisy multivariate autoregressive process are solved independently of the probability law governing the observed data. The procedure of solving the problems is divided into 1) estimate parameters by solving pertinent block Toeplitz and Hankel matrices as well as compute the modified Akaike information criterion ... View full abstract»

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  • Recursive discrete Fourier transformation with unevenly spaced data

    Publication Year: 1983, Page(s):206 - 209
    Cited by:  Papers (8)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (408 KB)

    New recursive techniques for Fourier spectral analysis are reported, for which ongoing spectral estimates are generated from unevenly spaced data in real time. The algorithms are robust and computationally efficient, and are well suited to state variable form involving real number calculations. These methods are particularly attractive in filtering and signal processing applications where signals ... View full abstract»

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  • Effect of channel errors on the performance of LPC vocoders

    Publication Year: 1983, Page(s):234 - 237
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (368 KB)

    The effect of channel errors on the performance of LPC vocoders has been investigated. The vocoder performance is fairly robust when the error rate is 10-3or less. Among the various parameters, the first two reflection coefficients and pitch are most sensitive to channel errors. When these parameters are coded with an error protection scheme, the performance is robust even when the erro... View full abstract»

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  • A theoretical and experimental comparison of output signal-to-noise ratios of three types of cross correlators

    Publication Year: 1983, Page(s):202 - 205
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (440 KB)

    The output signal-to-noise ratio as a function of input signal-to-noise ratios is compared for three different types of cross-correlators: 1) the standard analog cross correlator consisting of bandpass filters, multiplier, and low-pass filter; 2) the polarity coincidence correlator (PCC) which incorporates hard limiters in each analog input channel; and 3) a modified type of PCC wherein only one o... View full abstract»

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  • Recursive maximum likelihood estimation of autoregressive processes

    Publication Year: 1983, Page(s):56 - 65
    Cited by:  Papers (42)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (696 KB)

    A new method of autoregressive parameter estimation is presented. The technique is a closer approximation to the true maximum likelihood estimator than that obtained using linear prediction techniques. The advantage of the new algorithm is mainly for short data records and/or sharply peaked spectra. Simulation results indicate that the parameter bias as well as the variance is reduced over the Yul... View full abstract»

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  • Machine recognition of the Cantonese digits using bandpass filters

    Publication Year: 1983, Page(s):220 - 222
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB)

    This work presents the results of an experiment on machine recognition of the Cantonese digits (0-10) using spectral matching. A two-step procedure was used in the normalization and weighting of the filter outputs. It was observed that the scores varied from 55-100 percent. View full abstract»

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  • A family of special purpose microprogrammable digital signal processor IC's in an LPC vocoder system

    Publication Year: 1983, Page(s):273 - 281
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1368 KB)

    This paper discusses a family of digital signal processor integrated circuits designed to be the fundamental building blocks of an LPC vocoder, specifically LPC analysis, AMDF pitch extraction, and LPC synthesis. The IC's are custom designs intended to minimize silicon real estate for extremely high performance, novel DSP architectures, and high computational demand algorithms. Each IC shares a co... View full abstract»

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  • A generalization of the spectrogram for colored displays

    Publication Year: 1983, Page(s):222 - 225
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (496 KB)

    This paper defines a class of colored displays for analyzing the spectral content of nonstationary processes. The displays are based on a natural mapping that exists between colors and pairs of zero mean, equal variance complex random variables, and are capable of representing signal features not easily recognizable on a conventional spectrogram. Displays are constructed for both one and two chann... View full abstract»

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  • An auditory spectral analysis model using the chirp z-transform

    Publication Year: 1983, Page(s):148 - 156
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (856 KB)

    In this paper we discuss a new signal-processing approach to implementing an auditory processing model. The model is based on auditory physiology and psychophysics; it uses constant-bandwidth analysis below 500 Hz and constant-Q analysis above 500 Hz, with the analysis filters being implemented with multiple real poles. The constant-Q analysis is performed using the chirp z-transform (CZT). We rev... View full abstract»

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  • Some notes on the second-order interpolation problem of digital filters

    Publication Year: 1983, Page(s):209 - 212
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (424 KB)

    Mullis and Roberts formulated the second-order interpolation problem of digital filters in 1976, and provided the fundamental Proposition 1 concerned with its solvability [1]. The present correspondence gives three examples which show items b) and c) of Proposition 1 provided by them are not correct. It also presents a necessary and sufficient condition of the solvability of the second-order inter... View full abstract»

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  • Random modulation: A review

    Publication Year: 1983, Page(s):96 - 105
    Cited by:  Papers (42)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (752 KB)

    A unified treatment of various aspects of random modulation is presented with emphasis on the spectral properties of FM signals. The study includes reexamination of Rice's representation, Woodward's theorem, FSK, and processes with normal, Markov, and cyclostationary frequencies. 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