![]() Aspiration is turbulent noise whose source is the glottis, thus aspiration has formant structure similar to the following sonorant, and a resulting low COG, and diffuse spectrum. The fundamental (and contrastive) difference between phonologically aspirated stops and phonological affricates is the nature of the release. ![]() If it is a categorial albeit non-neutralizing phonological rule, then all of the evidence says that the rule aspirating /tʃ/ isn't different from the rule aspirating /p,t,k/. In that case, asking if they are "the same" is kind of meaningless. "apex" are not the same – phonetic equations do not yield categories. If it is due to a "rule" (equation) of continuous phonetic implementation, the aspirations of "pit" vs. So the ultimate answer depends on establishing what kind of rule governs aspiration. As a statement of phonetics that's not a problem, but as a phonological generalization, that flies in the face of the premise that English just has a distinction "aspirated" and "unaspirated", which is furthermore rule-governed. Given that, there are dozens of "degrees" of aspiration (defined as voice onset time or lag to complete silence in case the consonant is not followed by a voiced segment). ![]() That duration depends on contextual factors, for example /t/ versus /k/, being utterance-initial vs. The duration of the noise between the release of the stop is taken be the phonetic correlate of aspiration. In final position ("stop, hit, watch") there is often some degree of voiceless turbulence which is usually relegated to the category of release, not aspiration, but the physical substance of that noise is indistinguishable in type from that of aspirates. foot-non-initial positions, with some provision for C#ˈV contexts where there is no aspiration ("watch Oscar set Oscar stop Oscar"). The relevant contexts for aspiration are bit more complicated and are best stated in terms of foot-initial (aspirated) vs. The affricate /tʃ/ does not behave differently from the stops /p t k/ w.r.t.
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