Copyright © American Speech-Language-Hearing Association From: Characteristics of Voicing Source Waveforms Produced by Esophageal and Tracheoesophageal Speakers J Speech Hear Res. 1995;38(3):536-548. doi:10.1044/jshr.3803.536 Legend: Control panel for pitch-synchronized linear predictive analysis and inverse filtering (top), example of flow signal recorded by the mask (middle), and the inverse filtered signal (bottom). Date of download: 11/11/2017 Copyright © American Speech-Language-Hearing Association