Fricative duration in esophageal speech

Area of Science:

• Speech Science
• Linguistics
• Audiology

Background:

• Laryngeal amputation significantly impacts speech production.
• Esophageal speech is an alternative communication method for individuals without a larynx.
• Understanding speech characteristics of esophageal speakers is crucial for rehabilitation.

Purpose of the Study:

• To compare fricative durations between normal and esophageal speakers.
• To investigate the influence of voicing features on fricative durations in both speaker groups.
• To evaluate the articulatory capabilities and phonetic feature retention in esophageal speech.

Main Methods:

• Acoustic analysis of fricative sounds (/s/ and /z/) was performed.
• Durational characteristics of fricatives were measured and compared.
• Data from normal speakers served as a baseline for comparison with esophageal speakers.

Main Results:

• Significant differences in average fricative durations were observed between normal and esophageal speakers.
• These durational differences varied systematically based on the voicing feature of the fricatives.
• Esophageal speakers demonstrated preserved durational voicing contrast features.

Conclusions:

• Laryngeal amputation leads to widespread alterations in speech production mechanisms.
• Esophageal speakers develop and utilize specific articulatory behaviors for speech.
• Despite anatomical changes, esophageal speakers maintain the ability to produce durational voicing contrasts in fricatives.