An Apparatus for the Visual Display of Speech-Sounds
Cecil C. Bridges · The American Journal of Psychology · 1964
The device described here is an apparatus for the visual display of the patterns of speech, i.e. variations in frequency-time relationships. For deaf or partially deaf persons, a number of phonemes are not associated with visible movements of the speaker's tongue or lips, hence simple imitative learning is not possible. Some phonemes in foreign languages also resist learning by imitative methods, and additional visual cues might be useful in shaping correct pronunciation. This device provides a simple visual feedback as a substitute for missing or ignored auditory cues. In addition to applications in speech-training or teaching in the pronunciation of foreign languages, other aspects of speech may be investigated using this visual feedback.