To be able to “see” with sound has long been an intriguing concept. Sound waves which are scattered from objects carry much the same image information as do scattered light waves. However, humans are not naturally equipped to efficiently data-process the acoustic image information. A person cannot obtain a good mental image of an object by simply listening to the scattered sound from the object. For example, a man cannot go into a completely dark room and by using his vocal chords only, obtain much information, if any at all, that will give him a mental image of the objects in the room. He may shout and listen for echoes, but to almost no avail. On the other hand, he can do precisely the equivalent thing with light. If he takes a flashlight into the room, he can quickly turn it on and off, creating flashes of light. By seeing the pulses of scattered light from the various objects he can readily obtain a mental image of the size, color and configuration of the various parts of the room and of the objects placed within it.
KeywordsSound Source Image Information Reference Beam Acoustic Imaging Object Beam
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- L. Spallanzani, “Litera Prima,” in Opere de Lazzaro Spallanzani, Vol. 5, Dalla Societa Tipogr. De’Classici Italiani, Milano, 1826, p. 209.Google Scholar
- P. Langevin and M. C. Chilowski, “Procédés et appareils pour la production de signaux sous-marins diregés et pour la localisation a distance d’obstacles sous-marins,” French Patent No. 502913, May 29, 1916.Google Scholar
- S. J. Sokolov, “Ultrasonic oscillations and their applications,” Tech. Phys. U.S.S.R., Vol. 2, p. 522, 1935.Google Scholar
- S. J. Sokolov, “Über die praktische ausnutzung de beugnung des lichtes an ultraschällwellen,” Phys. Z., Vol. 36, p. 142, 1935.Google Scholar
- S. J. Sokolov, “Ultrasonic microscope,” Akedemia Nauk SSSR; Doklady (Tekhnicheskaya Fizika), Vol. 64, pp. 333–335, 1949.Google Scholar
- J. E. Jacobs and D. A. Peterson, “Advances in the Sokoloff tube,” in Acoustical Holography, Vol. 5, P. S. Green, Ed. New York: Plenum, 1974, pp. 633–645.Google Scholar
- O. Muhlhauser, “Verfahren zur Zustandsbestimmung von Werkstoffen, besonders zur Ermittlung von Fehlern darin,” German Patent No. 569598, 1931.Google Scholar
- Editorial Staff, “An interview with the father of holography,” Optical Spectra, Vol. 4, No. 9, pp. 32–33, October 1970.Google Scholar
- P. Greguss, “Ultrasonic holograms,” Res. Film, Vol. 5:4 pp. 330–337, 1965.Google Scholar
- F. L. Thurstone, “Ultrasound holography and visual reconstruction,” Proc. Symp. Biomed. Eng., Vol. 1, pp. 12–15. 1966.Google Scholar
- L. W. Kessler, P. R. Palermo and A. Korpel, “Practical high-resolution acoustic microscopy,” in Acoustical Holography, Vol. 4, G. Wade, Ed. New York: Plenum, 1972, pp. 51–71.Google Scholar
- G. Wade, J. Landry, and A. A. deSouza, “Acoustic transparencies for optical imaging and ultrasonic diffraction,” paper at the First International Symposium on Acoustical Holography, December 1967.Google Scholar
- P. S. Green, L. F. Schaefer, E. D. Jones and J. R. Suarez, “A new, high-performance ultrasonic camera,” in Acoustical Holography, Vol. 5, P. S. Green, Ed. New York: Plenum, 1974, pp. 493–503.Google Scholar