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
  • On the zeros of the linear prediction-error filter for deterministic signals

    Publication Year: 1983, Page(s):217 - 220
    Cited by:  Papers (98)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (512 KB)

    The zeros of a linear prediction-error filter polynomial for a class of deterministic signals, that are a sum of samples of M exponentially damped/undamped sinusoids, is studied. It is assumed that N samples are available for processing and that they are uncorrupted by noise. It is shown that the exponent parameters of the M signals can be determined from M zeros (called "signal zeros") of an Lth ... 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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  • 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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  • 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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  • The processing of periodically sampled multidimensional signals

    Publication Year: 1983, Page(s):188 - 194
    Cited by:  Papers (72)
    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 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 switched-capacitor adaptive lattice filter

    Publication Year: 1983, Page(s):294 - 304
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1352 KB)

    Integration of an adaptive lattice filter in MOS-LSI technology is described. The architecture is designed to optimally exploit the advantages of analog and digital approaches. Switched-capacitor techniques are used for filtering and digital circuitry is used to perform the adaption. To test file concept, the analog circuitry was fabricated as an IC and operated with discrete digital circuitry. Ho... 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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  • An optimized weighting algorithm for variations in PCM energy levels

    Publication Year: 1983, Page(s):180 - 188
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1192 KB)

    The advantages of optimum weighted PCM for speech signals has been demonstrated by Sundberg [2]. Since the symbols in a PCM word have different sensitivities to digital transmission errors the relative signal energy used by each PCM word is matched accordingly. A near optimum performance may be achieved by transmitting groups of PCM symbols at the same energy level where the number of groups is le... View full abstract»

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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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  • 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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  • Real-time implementation of time domain harmonic scaling of speech for rate modification and coding

    Publication Year: 1983, Page(s):258 - 272
    Cited by:  Papers (4)  |  Patents (9)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1464 KB)

    Time domain harmonic scaling (TDHS) has been realized in real time on the Bell Laboratories digital signal processing (DSP) integrated circuit. It is an algorithm that can expand or compress the bandwidth and sampling rate of speech by taking advantage of the pitch structure in the speech signal. As such it is useful in a variety of speech applications including speech coding, speech enhancement, ... 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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  • Simplified tone detector for PCM channel

    Publication Year: 1983, Page(s):8 - 16
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (768 KB)

    A digital correlator for detecting multifrequency signaling tones is described. The theory is first presented for a continuous correlator using a fixed sine wave burst. A substitution, using a change in the time reference of the correlating sine wave, is then introduced. By introducing this change, a modified computational algorithm is derived which reduces the number of multiplications required a... 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