The Effects of Stress Type, Vowel Identity, Baseline f0, and Loudness on the Relative Fundamental Frequency of Individuals With Healthy Voices.
Yeonggwang Park, Cara E Stepp
PMID 30078521WHAT IT FOUND
For healthy voices, how syllables are stressed changes the voice measure thought to reflect laryngeal tension.
Equal stress was the steadiest. Baseline pitch changed values; loudness did not.
Key findings
01Stress pattern changed RFF values, and equal stress across syllables was the most repeatable within a speaker.
02Higher baseline pitch gave lower RFF values, and lower baseline pitch gave higher RFF values.
03Loudness did not change average RFF values, but soft voice showed wide spread across speakers.
STILL TO COME
How it was doneWhat they foundWhat it means for SLPs
Read the rest of this summary
You get three full summaries a month, free, and we do not ask for a card. Search, the TL;DRs and your library stay unlimited either way.
What it does not show
Only healthy adults were tested, so the findings may not apply to people with voice disorders. Only short utterances were tested, not connected speech. Pitch and loudness conditions were not randomized. Participants chose their own soft and loud levels. Equal stress instructions can make the task sound chanted or sung.
The easy way to misread this
Do not read these stimulus effects as evidence that RFF diagnoses or tracks voice disorders. The study tested only healthy voices, so its RFF changes may not apply to patients with voice disorders.