Airflow Vibrato Dependence on Pitch, Loudness, Adduction, and Straight Tone: A Single Case Study.

The purpose of this study was to examine the relationship between airflow vibrato (primarily extent) and pitch, loudness, and adduction, as well as the differences between vibrato production and straight tone singing. A single professional mezzo soprano was the participant. A Glottal Enterprises aerodynamic system was used to record wide-band airflow.