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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
  • 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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  • 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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  • Normalized lattice algorithms for least-squares FIR system identification

    Publication Year: 1983, Page(s):122 - 128
    Cited by:  Papers (26)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (680 KB)

    Recently developed algorithms for least-squares identification of autoregressive models are extended in this paper so as to facilitate least-squares identification of finite impulse-response models. The algorithms belong to the class of square-root normalized lattice algorithms, hence they share the computational efficiency and good numerical behavior of the latter. Two versions are presented-one ... 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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  • 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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  • 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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  • C2MOS speech synthesis systems

    Publication Year: 1983, Page(s):329 - 334
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1312 KB)

    Employing an updated C2MOS technique, two types of speech synthesizer LSI circuits, based on the PARCOR and the ADM methods, are introduced and described. These two LSI circuits, fabricated with a standard metal gate CMOS process, have several features. 1) They can be operated with a single power supply over a 3-7 V range. 2) Their power dissipations are, respectively, 0.6 mW (PARCOR) a... View full abstract»

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  • The processing of periodically sampled multidimensional signals

    Publication Year: 1983, Page(s):188 - 194
    Cited by:  Papers (71)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (704 KB)

    This paper discusses algorithms for processing multidimensional signals which are sampled on regular, but nonrectangular sampiing lattices. Such sampling lattices are dictated by some applications and may be chosen for others because of their resulting symmetric responses or computational efficiencies. We show that any operation which can be performed on a rectangular lattice can be performed on a... 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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  • 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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  • Recursive least squares circular lattice and escalator estimation algorithms

    Publication Year: 1983, Page(s):228 - 231
    Cited by:  Papers (33)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB)

    This note supplements the paper of Sakai [1] about circular lattice filtering with the derivation of optimal recursive least squares circular lattice estimation algorithms. The derivation is based on the geometric method of Lee, Morf, and Friedlander [2]. The same method is also applied to obtain an optimal recursive estimation algorithm for escalator structure of Ahmed and Youn [3]. View full abstract»

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  • Improvements in isolated word recognition

    Publication Year: 1983, Page(s):157 - 167
    Cited by:  Papers (16)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1192 KB)

    For isolated word recognition, possibilities for improving the recognition accuracy are investigated for a given feature extraction, which is based on a short term spectrum analysis by means of band-pass filtering. A number of preprocessing steps are discussed, which are to be applied prior to time alignment via dynamic programming. These preprocessing steps include normalization of short term spe... View full abstract»

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  • An extended precision logarithmic number system

    Publication Year: 1983, Page(s):232 - 234
    Cited by:  Papers (28)  |  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (280 KB)

    The logarithmic number system possesses a comparatively wide dynamic range. In order to perform addition to this system, memory table lookup operations are needed. The address space limitations of contemporary high-speed static RAM's or ROM currently limit the admissible logarithmic wordlength. To overcome this problem, a linear interpolation logarithmic arithmetic unit is developed and tested. 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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Aims & Scope

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

Full Aims & Scope