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IEEE Transactions on Audio and Electroacoustics

Issue 4 • Date August 1973

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Displaying Results 1 - 18 of 18
  • [Front cover and table of contents]

    Publication Year: 1973, Page(s): 0
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    Freely Available from IEEE
  • A spectral characterization of the ill-conditioning in numerical deconvolution

    Publication Year: 1973, Page(s):344 - 348
    Cited by:  Papers (31)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (8488 KB)

    An important class of applications in digital signal processing involves the numerical solution of the convolution integral. These so-called numerical deconvolution problems are notoriously difficult to solve because of their inherent ill-conditioning. In this paper we present a characterization of this ill-conditioning based on a classical spectral decomposition of the discrete convolution. Facto... View full abstract»

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  • [Back cover]

    Publication Year: 1973, Page(s): c4
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    Freely Available from IEEE
  • Proportional bandwidth filtering

    Publication Year: 1973, Page(s):377 - 378
    Cited by:  Papers (3)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (288 KB)

    In power spectrum measurement, there are instances in which proportional bandwidth filtering is preferable to constant bandwidth filtering. One such instance is the analysis of sound and vibration from a rotating machine with a varying rotation frequency. The mathematics describing proportional bandwidth filtering are presented. View full abstract»

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  • Statistics of the estimate of the magnitute-coherence function

    Publication Year: 1973, Page(s):388 - 389
    Cited by:  Papers (11)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (184 KB)

    Expressions for the statistics of the estimate of magnitude coherence between two random stationary Gaussian processes are presented. These statistics include the probability density function, the cumulative distribution function, the bias, and the variance of the estimator. The expressions presented are in convenient and accurate forms for digital computer evaluation. Graphical examples of the bi... View full abstract»

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  • Poles of Maximally flat sharp-cutoff low-pass filters

    Publication Year: 1973, Page(s):374 - 377
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (336 KB)

    The poles of a recently discussed [2] maximally flat sharp-cutoff low-pass filter are tabulated for various orders of the filter and various values of the parameters. Loci of these poles are also sketched for some representative orders. View full abstract»

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  • Signal-to-noise ratio as a predictor of speech transmission quality

    Publication Year: 1973, Page(s):384 - 387
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (416 KB)

    Signal-to-noise ratio expressed in decibels may be generalized to the form 10 \log S^{a}/N^{b} , where S and N are, respectively, signal and noise values expressed in power units. In the usual definition of signal-to-noise ratio, the exponents a and b both assume values of +1, that is, the ratio a/b = 1. This study was designed to examine the optimum value o... View full abstract»

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  • Stability test for two-dimensional recursive filters

    Publication Year: 1973, Page(s):366 - 372
    Cited by:  Papers (82)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (728 KB)

    For deciding the stability of a two-dimensional filter, it is of interest to determine whether or not a prescribed polynomial in the variables z1and z2is nonzero in the region ... View full abstract»

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  • Remarks on "The mechanics of bilinear transformation"

    Publication Year: 1973, Page(s):380 - 382
    Cited by:  Papers (21)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (288 KB)

    The entries in X matrix of Power [1]-[3] and in Q matrix of Fielder [4] are further simplified. In fact, for n even one needs to calculate n/2 × n/2 elements, and for n odd, (n - 1)/2 × (n - 1)/2 elements of these matrices. This simplification is based on certain properties of the rows and columns of the Q and X matrices. View full abstract»

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  • A low-sensitivity active RC low-pass filter

    Publication Year: 1973, Page(s):372 - 374
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (296 KB)

    A new active canonic RC low-pass filter is given. The sensitivities, with respect to all passive and active circuit components, are low. The frequency limitations of the filter are derived based on the one-pole rolloff model of the operational amplifier (OA) and the results arrived at are compared with other well-known low-pass filters. Experimental results agree with the theoretical ones. View full abstract»

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  • On the design of optimum FIR low-pass filters with even impulse response duration

    Publication Year: 1973, Page(s):329 - 336
    Cited by:  Papers (14)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (704 KB)

    A great deal of attention has been given recently to the theory of designing optimum, linear phase, finite impulse response (FIR) low-pass digital filters where N, the filter impulse response duration, was odd. In this paper it is shown that the inclusion of optimal filters with even values of N gives additional flexibility to the general filter design problem. In particular, it will be shown that... View full abstract»

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  • Redundant processing sensitivity

    Publication Year: 1973, Page(s):348 - 354
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (608 KB)

    The computational speed of special-purpose Fourier transformers has made redundant processing of data with very narrow resolution bandwidths feasible. One prominent application of this type of equipment is its use as an optimum receiver for detection of narrow-band signals with random phase and unknown frequency. As shown in this paper, the redundantly processed data can be usefully employed to im... View full abstract»

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  • Noise variance for rounded two's complement product quantization

    Publication Year: 1973, Page(s):378 - 380
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB)

    The Halyo-McAlpine discrete model for product quantization is reconstructed using an error variable set having an even number of members. It is shown in this case that the noise variance associated with a continuous model becomes an upper rather than a lower bound on the variance of the product quantization noise. The modified error set is shown to be more consistent with binary data formats such ... View full abstract»

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  • Analysis of structural-acoustic interactions in metal-ceramic transducers

    Publication Year: 1973, Page(s):317 - 324
    Cited by:  Papers (24)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (832 KB)

    The influence of coupling between flexural and extensional deformation and coupling between structure and acoustic volume on the dynamic response of piezoelectric ceramic transducer elements mounted on metal diaphragms is analyzed using three analytical methods: 1) classical boundary value techniques; 2) simple direct variational procedures; and 3) finite element methods. The analyses are able to ... View full abstract»

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  • Discrete-time models:Bilinear transform and ramp approximation equivalence

    Publication Year: 1973, Page(s):382 - 384
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (368 KB)

    The problem of developing discrete-time models for continuous systems from integral approximations is considered. In particular, the model obtained by approximating the input by a piecewise linear function is developed. By an appropriate approximation of this model, an equivalence between it and the bilinear transform model is established. View full abstract»

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  • Estimation of the magnitude-squared coherence function via overlapped fast Fourier transform processing

    Publication Year: 1973, Page(s):337 - 344
    Cited by:  Papers (272)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (744 KB)

    A method for estimating the magnitude-squared coherence function for two zero-mean wide-sense-stationary random processes is presented. The estimation technique utilizes the weighted overlapped segmentation fast Fourier transform approach. Analytical and empirical results for statistics of the estimator are presented. The analytical expressions are limited to the nonoverlapped case; empirical resu... View full abstract»

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  • Analysis of quantization errors in the direct form for finite impulse response digital filters

    Publication Year: 1973, Page(s):354 - 366
    Cited by:  Papers (86)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1288 KB)

    An analysis of the three possible types of quantization effects in the direct form realization of finite impulse response (FIR) digital filters is presented. These quantization effects include roundoff noise, A-D noise, and filter frequency response errors due to coefficient quantization. Since the analysis of roundoff noise and A-D noise for the direct form is straightforward, this paper concentr... View full abstract»

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  • Noise considerations in capacitative source microphones for telephone applications

    Publication Year: 1973, Page(s):324 - 328
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (496 KB)

    The signal-to-noise performance of two types of piezoelectric ceramic microphones designed for telephone applications is compared with that of two electret microphones. It is shown that for the microphone sensitivities considered the noise produced by low-cost preamplifiers suitable for low-voltage operation in a telephone set is the limiting factor. While the electret microphone-preamplifier comb... View full abstract»

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Aims & Scope

This Transactions ceased production in 1973. The current retitled publication is IEEE Transactions on Signal Processing.

Full Aims & Scope