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IEEE Transactions on Audio and Electroacoustics

Issue 1 • March 1969

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Displaying Results 1 - 11 of 11
  • [Front cover and table of contents]

    Publication Year: 1969, Page(s): 0
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    Freely Available from IEEE
  • Editorial

    Publication Year: 1969, Page(s): 1
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    Freely Available from IEEE
  • [Back cover]

    Publication Year: 1969, Page(s): c4
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    Freely Available from IEEE
  • A direct search procedure for designing finite duration impulse response filters

    Publication Year: 1969, Page(s):33 - 36
    Cited by:  Papers (34)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB)

    We introduce an approach to the design of low-pass (and, by extension, bandpass) digital filters containing only zeros. This approach is that of directly searching for transition values of the sampled frequency response function to reduce the sidelobe level of the response. It is shown that the problem is a linear program and a search algorithm is derived which makes it easier to obtain the experi... View full abstract»

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  • A model for synthesizing speech by rule

    Publication Year: 1969, Page(s):7 - 13
    Cited by:  Papers (2)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (600 KB)

    A general model for speech synthesis by rule is presented along with a discussion of one specific implementation of the model. The conversion from discrete input signals to continuous synthesizer control signals is performed by the synthesis strategy. The details of the synthesis strategy, including linguistic preprocessing of the input and separate but interdependent segmental and suprasegmental ... View full abstract»

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  • Computer recognition of speech using zero-crossing information

    Publication Year: 1969, Page(s):37 - 40
    Cited by:  Papers (10)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (584 KB)

    In the present age of scientific discovery, man has become more and more dependent on the use of electronic computers. As this powerful tool becomes more universally important in man's day-to-day existence, it becomes increasingly more annoying that he has to speak to it in its mode of communication, paper tape or punch cards; and not in his own, the spoken word. Even today in the very infancy of ... View full abstract»

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  • The representation of continuous speech with a periodically sampled orthogonal basis

    Publication Year: 1969, Page(s):14 - 21
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (928 KB)

    The efficient transmission or processing of speech requires that a compromise be made between quality and bandwidth. Systems for bandwidth reduction, such as the vocoder, are usually designed to preserve the spectral content of the signal. High-quality systems, on the other hand, generally preserve waveshape by using high digital sampling rates. The determination of an adequate compromise is serio... View full abstract»

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  • Use of an interactive laboratory computer to study an acoustic-oscillator model of the vocal cords

    Publication Year: 1969, Page(s):2 - 6
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (504 KB)

    A Honeywell DDP-516 computer is used with an interactive program to study an acoustic-oscillator model of the vocal cords. The program includes a simulated vocal tract. Iterative solutions are obtained to difference equations which describe the acoustic volume velocity through the cords and the sound pressure output at the mouth. The results can be printed, displayed on a scope, or D/A converted f... View full abstract»

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  • Measurement of non-linear distortions in loudspeakers and determination of their nominal power

    Publication Year: 1969, Page(s):41 - 47
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (608 KB)

    This paper describes methods for measuring the nonlinear distortions of loudspeakers. The proposed methods are basically procedures for analyzing distortion in terms of acoustic power, with the aid of noise bands. The advantages of the proposed methods are briefly presented, along with examples of experimental data obtained. Also presented are some ideas on the determination of the nominal power o... View full abstract»

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  • Audio dynamic range compression for minimum perceived distortion

    Publication Year: 1969, Page(s):22 - 32
    Cited by:  Papers (19)  |  Patents (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1336 KB)

    When manual dynamic range compression is replaced by an automatic compression system, the sound engineer must still be able to choose some characteristics of the compression. An automatic system and the theory motivating its design are described. We have built a device (EMT 156) that enables the sound engineer to adjust any of the six static parameters; also, the system automatically chooses its o... View full abstract»

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  • Tests on loudspeakers in a reverberation chamber

    Publication Year: 1969, Page(s):48 - 52
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (488 KB)

    The methods and equipment for measuring the characteristics of a loudspeaker in a reverberation chamber are described. Analogous setups can be created under manufacturing plant conditions. The reverberation method is shown to possess a number of advantages in comparison with more generally accepted methods, and it is recommended for use in the practical planning and testing of loudspeakers. 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