Estimating Subglottal Pressure From Neck-Surface Acceleration During Normal Voice Production

Estimating Subglottal Pressure From Neck-Surface Acceleration During Normal Voice Production.

Purpose The purpose of this study was to evaluate the potential for estimating subglottal air pressure using a neck-surface accelerometer and to compare the accuracy of predicting subglottal air pressure relative to predicting acoustic sound pressure level (SPL). Method Indirect estimates of subglottal pressure (Psg') were obtained from 10 vocally healthy speakers during loud-to-soft repetiti...

Subglottal pressure and NAQ variation in voice production of classically trained baritone singers

The subglottal pressure (Ps) and voice source characteristics of five professional baritone singers were analyzed. Glottal adduction was estimated with amplitude quotient (AQ), defined as the ratio between peak-to-peak pulse amplitude and the negative peak of the differentiated flow glottogram, and with normalized amplitude quotient (NAQ), defined as AQ divided by fundamental period length. Pre...

Estimating subglottal pressure via airflow interruption with auditory masking.

Current noninvasive measurement of subglottal pressure using airflow interruption often produces inconsistent results due to the elicitation of audio-laryngeal reflexes. Auditory feedback could be considered as a means of ensuring measurement accuracy and precision. The purpose of this study was to determine if auditory masking could be used with the airflow interruption system to improve intra...

Tone Distribution and Its Effect on Subglottal Pressure during Speech

The current work is part of a project to characterize the subglottal pressure (Ps) contour associated with a spoken utterance in terms of the distribution of pitch accents and of phrase and boundary tones. It is found that the nuclear pitch accent does not define the start of the termination phase; the utterance offset is a better marker. Declination rate of the working phase and its relation t...

Subglottal pressure and airflow measures during vocal fry phonation.