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Pulmonic Ingressive Speech

Of the six possible airstream mechanisms available for human speech production—pulmonic, glottalic, or velaric initiation, each of which could occur egressively or ingressively—the overwhelming majority of speech sounds occur on pulmonic egressive airstream. Glottalic egressive airstream is used to produce ejectives, glottalic ingressive airstream is used to produce implosives, velaric ingressive airstream is employed to produce clicks, velaric egressive airstream is not found in any speech known speech sounds and might be impossible to produce. Pulmonic ingressive airstream, that is, when sound is produced by lung expansion that causes air to be sucked in through the speech apparatus, is commonly believed to be rare, and is anecdotally said to be a characteristic of Scandinavian speech, but is in fact found in many languages from all ...

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