Abstract
This study focuses on the initial component of the stop consonant release burst, the release transient. In theory, the transient, because of its impulselike source, should contain much information about the vocal tract configuration at release, but it is usually weak in intensity and difficult to isolate from the accompanying frication in natural speech. For this investigation, a human talker produced isolated release transients of /b,d,g/ in nine vocalic contexts by “mouthing” these syllables. He also produced the corresponding CV syllables with regular phonation for comparison. Spectral analyses showed the isolated transients to have a clearly defined formant structure, which was not seen in natural release bursts whose spectrum was dominated by the frication noise. The formant frequencies varied systematically with both consonant place of articulation and vocalic context, with the latter, “coarticulatory” influence actually exceeding the former. The transient thus provides an acoustic snapshot of the vocal tract immediately after the release. [Work supported by NICHD.]
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