Abstract
Objectives The purpose of this study was to determine the aerodynamic and acoustic features of speech produced at comfortable, maximal and minimal levels of vocal effort. Study Design Prospective, quasi-experimental research design. Method Eighteen healthy participants with normal voice were included in this study. After task training, participants produced repeated syllable combinations at comfortable, maximal and minimal levels of vocal effort. A pneumotachometer and vented (Rothenberg) mask were used to record aerodynamic data, with simultaneous recording of the acoustic signal for subsequent analysis. Aerodynamic measures of subglottal pressure, translaryngeal airflow, maximum flow declination rate (MFDR), and laryngeal resistance were analyzed, along with acoustic measures of cepstral peak prominence (CPP) and its standard deviation (SD). Results Participants produced significantly greater subglottal pressure, translaryngeal airflow, and MFDR during maximal effort speech as compared with comfortable vocal effort. When producing speech at minimal vocal effort, participants lowered subglottal pressure, MFDR, and laryngeal resistance. Acoustic changes associated with changes in vocal effort included significantly higher CPP during maximal effort speech and significantly lower CPP SD during minimal effort speech, when each was compared with comfortable effort. Conclusions For healthy speakers without voice disorders, subglottal pressure, translaryngeal airflow, and MFDR may be important factors that contribute to an increased sense of vocal effort. Changes in the cepstral signal also occur under conditions of increased or decreased vocal effort relative to comfortable effort.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 144-153 |
| Number of pages | 10 |
| Journal | Journal of Voice |
| Volume | 28 |
| Issue number | 2 |
| DOIs | |
| State | Published - Mar 2014 |
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Keywords
- Acoustic
- Aerodynamic
- Airflow
- Cepstral
- Laryngeal resistance
- Maximum flow declination rate
- Pressure
- Vocal effort
- Voice
ASJC Scopus subject areas
- Otorhinolaryngology
- Speech and Hearing
- LPN and LVN
Cite this
Aerodynamic and acoustic features of vocal effort. / Rosenthal, Allison L.; Lowell, Soren; Colton, Raymond H.
In: Journal of Voice, Vol. 28, No. 2, 03.2014, p. 144-153.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Aerodynamic and acoustic features of vocal effort
AU - Rosenthal, Allison L.
AU - Lowell, Soren
AU - Colton, Raymond H.
PY - 2014/3
Y1 - 2014/3
N2 - Objectives The purpose of this study was to determine the aerodynamic and acoustic features of speech produced at comfortable, maximal and minimal levels of vocal effort. Study Design Prospective, quasi-experimental research design. Method Eighteen healthy participants with normal voice were included in this study. After task training, participants produced repeated syllable combinations at comfortable, maximal and minimal levels of vocal effort. A pneumotachometer and vented (Rothenberg) mask were used to record aerodynamic data, with simultaneous recording of the acoustic signal for subsequent analysis. Aerodynamic measures of subglottal pressure, translaryngeal airflow, maximum flow declination rate (MFDR), and laryngeal resistance were analyzed, along with acoustic measures of cepstral peak prominence (CPP) and its standard deviation (SD). Results Participants produced significantly greater subglottal pressure, translaryngeal airflow, and MFDR during maximal effort speech as compared with comfortable vocal effort. When producing speech at minimal vocal effort, participants lowered subglottal pressure, MFDR, and laryngeal resistance. Acoustic changes associated with changes in vocal effort included significantly higher CPP during maximal effort speech and significantly lower CPP SD during minimal effort speech, when each was compared with comfortable effort. Conclusions For healthy speakers without voice disorders, subglottal pressure, translaryngeal airflow, and MFDR may be important factors that contribute to an increased sense of vocal effort. Changes in the cepstral signal also occur under conditions of increased or decreased vocal effort relative to comfortable effort.
AB - Objectives The purpose of this study was to determine the aerodynamic and acoustic features of speech produced at comfortable, maximal and minimal levels of vocal effort. Study Design Prospective, quasi-experimental research design. Method Eighteen healthy participants with normal voice were included in this study. After task training, participants produced repeated syllable combinations at comfortable, maximal and minimal levels of vocal effort. A pneumotachometer and vented (Rothenberg) mask were used to record aerodynamic data, with simultaneous recording of the acoustic signal for subsequent analysis. Aerodynamic measures of subglottal pressure, translaryngeal airflow, maximum flow declination rate (MFDR), and laryngeal resistance were analyzed, along with acoustic measures of cepstral peak prominence (CPP) and its standard deviation (SD). Results Participants produced significantly greater subglottal pressure, translaryngeal airflow, and MFDR during maximal effort speech as compared with comfortable vocal effort. When producing speech at minimal vocal effort, participants lowered subglottal pressure, MFDR, and laryngeal resistance. Acoustic changes associated with changes in vocal effort included significantly higher CPP during maximal effort speech and significantly lower CPP SD during minimal effort speech, when each was compared with comfortable effort. Conclusions For healthy speakers without voice disorders, subglottal pressure, translaryngeal airflow, and MFDR may be important factors that contribute to an increased sense of vocal effort. Changes in the cepstral signal also occur under conditions of increased or decreased vocal effort relative to comfortable effort.
KW - Acoustic
KW - Aerodynamic
KW - Airflow
KW - Cepstral
KW - Laryngeal resistance
KW - Maximum flow declination rate
KW - Pressure
KW - Vocal effort
KW - Voice
UR - http://www.scopus.com/inward/record.url?scp=84896699861&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84896699861&partnerID=8YFLogxK
U2 - 10.1016/j.jvoice.2013.09.007
DO - 10.1016/j.jvoice.2013.09.007
M3 - Article
VL - 28
SP - 144
EP - 153
JO - Journal of Voice
JF - Journal of Voice
SN - 0892-1997
IS - 2
ER -