Abstract
The inventory of segments required to synthesize normal American speech from recorded utterances has been partially investigated. A total of 43 phonetic units has been found essential, including a unit of silence. These units represent the segmental phonemes and some of the major allophones of these phonemes of the midwestern dialect of American speech. To obtain the segments, utterances are constructed involving the two desired phones with the proper intonation and stress environment. The utterances are recorded on magnetic tape, and the desired boundaries of the segments are determined by means of a technique including a sound spectrograph. An attempt is made to match harmonics, formants, and amplitude envelopes between adjacent segments. To synthesize the mid-western dialect of American speech it is estimated that an inventory of about 8000 segments is required. A sentence synthesized from approximately 47 such segments will be demonstrated.
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