Transmasculine Voice Modification: A Case Study.
Daniel P Buckley, Kimberly L Dahl, Gabriel J Cler and 1 others
PMID 31153772WHAT IT FOUND
A single session of manual laryngeal therapy with active voicing lowered pitch and resonance in one transmasculine client, making the voice sound more masculine to listeners.
These changes disappeared after three days, so this is not evidence the technique works long-term.
Key findings
01Active manual laryngeal reposturing with voicing lowered fundamental frequency and vowel formants more than passive massage alone.
02Listeners rated the voice as more masculine after the active training session than at any other time point.
03Acoustic changes were not maintained three days later, returning to baseline levels.
STILL TO COME
How it was doneWhat they foundWhat it means for SLPs
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What it does not show
This is a single case report, so results cannot be generalized to other transmasculine individuals. The effects were short-lived, disappearing within three days. The participant was already on testosterone for 1.5 years, so it is unclear how the therapy would affect someone not on hormones or with different baseline voice characteristics. The passive and active treatments were given in sequence, so the contribution of each cannot be fully separated. Listener ratings were based on short excerpts, which may not reflect everyday communication.
Declared interests
None reported.
The easy way to misread this
Do not assume this technique provides lasting voice masculinization. The changes in pitch and resonance returned to baseline within three days, and the participant could not self-monitor the laryngeal posture. This case shows an immediate effect, not a successful treatment outcome.