Holographic Interferometry of a Speech-Excited Acoustic Transducer
Donald L. Snider, Lee A. Wise · The Journal of the Acoustical Society of America · 1971
This paper discusses stone experiments in the analysis of speech utilizing time-averaged holograms of a vibrating transducer being driven by a speech signal. The research is directed toward the use of these holographic interferometry techniques as a tool in the recognition of speech and/or speaker. The experiments have been conducted with various acoustic transducers, including a sonar transducer and several different types of loudspeakers. Only steady-state isolated vowel sounds have been used as test signals to date, but future experiments may include the concatenation of several sounds. The patterns formed by the holographic interferometry method suggests their possible use as a type of voice-signature display analogous to the contour sound spectrogram. Comparisons have been made between several samples of the same vowel sounds for several speakers.