What audible phenomenon may occur with hypernasality during certain speech sounds?

The phenomenon of nasal emission is directly related to hypernasality and occurs when airflow escapes through the nose during the production of certain speech sounds, particularly during consonants that require a closure in the oral cavity, like plosives. In typical speech production, the velum (the back part of the roof of the mouth) elevates to close off the nasal passage when producing non-nasal sounds. However, in individuals with hypernasality, there is inadequate closure of the velopharyngeal port, allowing for this undesirable airflow through the nose, leading to nasal emission.

Nasal quality, while related to hypernasality, does not specifically describe the phenomenon of airflow escaping through the nose, which is a distinctive aspect of nasal emission. Vocal fatigue is not associated with hypernasality but rather indicates a strain in the voice, and glottal stops are specific types of consonant sounds that are produced by obstructing airflow, unrelated to the nasal issues that characterize hypernasality. Therefore, nasal emission is the best fit for describing the audible phenomenon that occurs with hypernasality during specific speech sounds.