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IEEE Transactions on Acoustics, Speech, and Signal Processing

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
  • An integrated voice recognition system

    Publication Year: 1983, Page(s):323 - 329
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (856 KB)

    A low-cost recognition system for isolated words and small vocabulary (typically 15 words) is described. The main features of the system are: possibility of integration in a stand-alone small-size CMOS chip, very-low-power consumption (typically 200 μW at 3 V supply voltage), and automatic adaptation to the speaker without any tedious training mode. 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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  • A single chip speech synthesizer using a switched-capacitor multiplier

    Publication Year: 1983, Page(s):313 - 323
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1248 KB)

    A single chip speech synthesizer was designed using a switched-capacitor multiplier to implement the LPC algorithm. The chip contains the LPC-10 filter, 20 kbit ROM, all control logic, a three-pole switched-capacitor low-pass filter, and an audio amplifier capable of driving a speaker directly. The chip was fabricated in 5 μm CMOS technology and is 218 mils on the side. View full abstract»

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  • A single-chip ADM LSI CODEC

    Publication Year: 1983, Page(s):281 - 287
    Cited by:  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (928 KB)

    This paper describes the circuit design of an ADM (adaptive delta modulation) LSI CODEC with filters. The LSI chip is mounted in a 16-pin DIP and can operate with single low voltage supply. In order to realize a low power dissipation LSI IC, switched capacitor technology was used in the design of input/output filters and integrators, and C-array D/A converters and low voltage analog circuits were ... View full abstract»

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  • A monolithic audio spectrum analyzer

    Publication Year: 1983, Page(s):288 - 293
    Cited by:  Papers (6)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (736 KB)

    A monolithic audio spectrum analyzer with 16 channels of bandpass filters, half-wave rectifiers, and postfiltering has been fabricated with double-poly NMOS technology. The chip was designed using switched-capacitor filter techniques. It performs a total of 84 poles of filtering and contains 100 operational amplifiers in an area of 225 × 280 mils. A system dynamic range of better than 43 dB, ... 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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  • QNAR AGC systems for adaptive signal detection

    Publication Year: 1983, Page(s):225 - 228
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (432 KB)

    In a previous paper we presented an NAR AGC system for regulation of noise power in presence of nonoverlapped signals and we showed its limitation in the case of overlapped signals. In this paper we consider the later case for which it is necessary to secure the NAR property all the time otherwise the receiver output will be attenuated. We show that it is possible to satisfy this condition only in... 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 sequential processor for detecting Gaussian acoustic signals

    Publication Year: 1983, Page(s):143 - 147
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (480 KB)

    A sequential approach to detecting Gaussian acoustic signals is discussed. The optimum sequential processor is synthesized and its performance is evaluated. The performance obtained is compared with the performance of the optimum unsequential processor. It is shown that the sequential approach may considerably reduce the required time-bandwidth product when the desired signal is present in the inp... View full abstract»

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  • Conversion factors from Walsh coefficients to Fourier coefficients

    Publication Year: 1983, Page(s):231 - 232
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (216 KB)

    We have proposed a computational algorithm for the discrete Fourier transform (DFT) via the discrete Walsh transform (DWT). However, the calculation equations for the conversion factors from the DWT coefficients to the DFT coefficients have not been shown. This paper presents the equations for the conversion factors. 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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  • Digital spectral analysis

    Publication Year: 1983, Page(s):241 - 242
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (272 KB)

    First Page of the Article
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  • A systematic approach to synthesis of limit cycle-free digital filters

    Publication Year: 1983, Page(s):212 - 214
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (368 KB)

    A systematic approach to synthesis of limit cycle-free digital filters under constant input conditions is proposed. Structures of limit cycle-free digital filters under constant input conditions are easily led from structures of limit cycle-free digital filters under zero input conditions. There exist various realizations which can suppress limit cycles for constant input signals. View full abstract»

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  • The real-time signal processor

    Publication Year: 1983, Page(s):83 - 95
    Cited by:  Papers (6)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1280 KB)

    The real-time signal processor (RSP) has a programmable signal processing architecture that was created to provide a quick and cost-effective way to implement a broad range of signal processing applications. Other objectives were that the RSP be easy to program, suitable for LSI implementation, and conveniently connectable into distributed systems. It was also intended that the RSP would be able 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