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IBM Journal of Research and Development

Issue 1 • Date Jan. 1964

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Displaying Results 1 - 11 of 11
  • Speech Synthesis from Stored Data

    Publication Year: 1964, Page(s):2 - 12
    Cited by:  Papers (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (586 KB)

    The synthesis of speech by joining together segments derived from natural speech has not proven to be satisfactory with segments smaller than words, especially because of discontinuities in pitch and formant frequencies at the junctions. It appears that segmentation of the control signals for an analog synthesizer may avoid these difficulties. This paper describes an experimental system to investi... View full abstract»

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  • Attenuation of a Magnetic Field by a Superconductor

    Publication Year: 1964, Page(s):13 - 21
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (514 KB)

    Observation of magnetic ac field penetration through superconducting tin films has led to the discovery of a 180° phase shift between the magnetic fields on either side of the film under favorable conditions. This result has so far been published only in a short note, and the present paper presents a detailed description of the experimental technique. A more quantitative discussion, with em... View full abstract»

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  • On Some Clustering Techniques

    Publication Year: 1964, Page(s):22 - 32
    Cited by:  Papers (20)  |  Patents (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (569 KB)

    The problem of organizing a large mass of data occurs frequently in research. Normally, some process of generalization is used to compress the data so that it can be analyzed more easily. A primitive step in this process is the “clustering” technique, which involves gathering together similar data into a cluster to permit a significant generalization. This paper describes a number of... View full abstract»

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  • A Vestigial-Sideband, Phase-Reversal Data Transmission System

    Publication Year: 1964, Page(s):33 - 42
    Cited by:  Papers (6)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (516 KB)

    A new method of carrier retrieval is described for a suppressed-carrier, vestigial-sideband data transmission system. Tests over voice grade telephone lines indicate that operation at 3000 bits per second (in some cases, 3600 bps) can be obtained reliably over private lines with simple adjustable equalization, whereas fixed compromise equalization will allow speeds up to 2400 bps over a large perc... View full abstract»

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  • Nondestructive Determination of Thickness and Refractive Index of Transparent Films

    Publication Year: 1964, Page(s):43 - 51
    Cited by:  Papers (9)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (469 KB)

    A simple nondestructive method of measuring the refractive index and thickness of transparent films on reflective substrates has been developed. The technique involves the use of a microscope equipped with a monochromatic filter on the objective and a stage that can be rotated so that the reflected light is observed at various angles. The film thickness, d, is given by d = [ΔNλ]/[2&#... View full abstract»

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  • Transmission-Line Response Using Frequency Techniques

    Publication Year: 1964, Page(s):52 - 63
    Cited by:  Papers (10)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (571 KB)

    Frequency-domain analysis of transmission-line pulse response is presented. A computer program is used to evaluate the response, using subroutines to describe the line characteristics and terminal conditions. The program is applicable to lines of any cross section in which the TEM mode of propagation exists. The line characteristics are obtained from either formula prediction or frequency measurem... View full abstract»

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  • A Fast, Digital-Indexed Light Deflector

    Publication Year: 1964, Page(s):64 - 67
    Cited by:  Papers (7)  |  Patents (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (335 KB)

    The device described in this paper is capable of positioning a light beam to any one out of, say, 1000 linearly arranged positions. The light beam is controlled by electric signals applied to electro-optic switches. The deflection is performed in either one or two dimensions. The positions are digitally indexed, thus allowing a high-speed-random access to each position. The locations of the positi... View full abstract»

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  • A Note on a Class of Binary Cyclic Codes Which Correct Solid-Burst Errors [Letter to the Editor]

    Publication Year: 1964, Page(s):68 - 69
    Cited by:  Papers (2)  |  Patents (1)
    IEEE is not the copyright holder of this material | PDF file iconPDF (242 KB)
    Freely Available from IEEE
  • IBM Technical Papers Published Recently in Other Journals

    Publication Year: 1964, Page(s):70 - 80
    IEEE is not the copyright holder of this material | PDF file iconPDF (643 KB)
    Freely Available from IEEE
  • Recent IBM Patents

    Publication Year: 1964, Page(s):81 - 82
    IEEE is not the copyright holder of this material | PDF file iconPDF (204 KB)
    Freely Available from IEEE
  • Authors

    Publication Year: 1964, Page(s):83 - 84
    IEEE is not the copyright holder of this material | PDF file iconPDF (228 KB)
    Freely Available from IEEE

Aims & Scope

The IBM Journal of Research and Development is a peer-reviewed technical journal, published bimonthly, which features the work of authors in the science, technology and engineering of information systems.

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Meet Our Editors

Editor-in-Chief
Clifford A. Pickover
IBM T. J. Watson Research Center