Maximum Phonation Time (MPT)
Maximum phonation time is a measure of how long an individual is able to sustain a sound. Usually the sound "ah" is used to record maximum phonation time. The measure is fairly simple to acquire and doesn't involve any more than a compliant patient and a stopwatch. Maximum phonation time is often a component involved in the assessment of dysphonia. MPT can be used to assess a patient's breath support for speech or it can be used as a baseline for means of post-treatment comparison, among other things.