STUDY OF ACOUSTIC PROPERTIES OF SPEECH SOUNDS
BOLT BERANEK AND NEWMAN INC CAMBRIDGE MA
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The spectral and temporal characteristics of American English vowel and consonant sounds in a variety of phonetic contexts are examined and compared with data reported in the literature. Spectrograms and sampled spectra obtained from an analog filter bank connected to a digital computer were assembled for a number of monosyllabic and bisyllabic utterances generated by three talkers, and a variety of measurements were made from these displays. The characteristics examined include durations of vowels, durations of various phases of consonants in prestressed and poststressed positions and in clusters, spectra of vowels and diphthongs and their variation with time, spectra of consonants during constricted intervals, and time-variation of spectra during the release of consonants. The aim of the study is not to present an exhaustive acoustic-phonetic description of American English speech sounds but rather to indicate the kinds of acoustic properties that need to be utilized in schemes for machine recognition of speech.
- Voice Communications