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;Stops and affricates
;Stops and affricates
All stops and affricates, except for the bilabial and glottal, have a three-way laryngeal contrast between unaspirated, aspirated, and ejective.
All stops and affricates, except for the bilabial and glottal, have a three-way laryngeal contrast between unaspirated, aspirated, and ejective.
The aspirated stops /tʰ, kʰ/ (orthographic {{angbr|{{spell-nv|t}}}}, {{angbr|{{spell-nv|k}}}}) are typically aspirated with velar frication [tx, kx] (they are phonetically affricates — homorganic in the case of [kx], heterorganic in the case of [tx]). The acoustic difference between an affricate and a stop + fricative consonant cluster is the rate of increase in the amplitude of the frication noise (i.e. the ''rise time''); affricates have a short rise time, consonant clusters have a longer rise time between the stop and fricative. There is variation within {{PAGENAME}}, however, in this respect: some speakers lack strong velar frication having instead a period of aspiration.
The aspirated stops /tʰ, kʰ/ (orthographic {{angbr|p, t, k}}) are typically aspirated with velar frication [px, tx, kx] (they are phonetically affricates — homorganic in the case of [kx], heterorganic in the case of [tx]). The acoustic difference between an affricate and a stop + fricative consonant cluster is the rate of increase in the amplitude of the frication noise (i.e. the ''rise time''); affricates have a short rise time, consonant clusters have a longer rise time between the stop and fricative. There is variation within {{PAGENAME}}, however, in this respect: some speakers lack strong velar frication having instead a period of aspiration.


Similarly the unaspirated velar /k/ (orthographic {{angbr|{{spell-nv|g}}}}) is realized as with optional voiced velar frication following the stop burst: [k] ~ [kɣ].
Similarly the unaspirated velar /k/ (orthographic {{angbr|{{spell-nv|g}}}}) is realized as with optional voiced velar frication following the stop burst: [k] ~ [kɣ].