Effects of Increasing Sound Pressure Level on Lip and Jaw Movement Parameters and Consistency in Young Adults Purpose Examination of movement parameters and consistency has been used to infer underlying neural control of movement. However, there has been no systematic investigation of whether the way individuals are asked (or cued) to increase loudness alters articulation. This study examined whether different cues to elicit louder speech induce different ... Research Article
Research Article  |   December 01, 2006
Effects of Increasing Sound Pressure Level on Lip and Jaw Movement Parameters and Consistency in Young Adults
 
Author Affiliations & Notes
  • Jessica E. Huber
    Purdue University, West Lafayette, IN
  • Bharath Chandrasekaran
    Purdue University, West Lafayette, IN
  • Contact author: Jessica E. Huber, Department of Speech, Language, and Hearing Sciences, Purdue University, 1353 Heavilon Hall, 500 Oval Drive, West Lafayette, IN 47907-2038. E-mail: jhuber@purdue.edu.
Article Information
Hearing & Speech Perception / Acoustics / Speech / Research Articles
Research Article   |   December 01, 2006
Effects of Increasing Sound Pressure Level on Lip and Jaw Movement Parameters and Consistency in Young Adults
Journal of Speech, Language, and Hearing Research, December 2006, Vol. 49, 1368-1379. doi:10.1044/1092-4388(2006/098)
History: Received October 3, 2005 , Revised February 7, 2006 , Accepted April 8, 2006
 
Journal of Speech, Language, and Hearing Research, December 2006, Vol. 49, 1368-1379. doi:10.1044/1092-4388(2006/098)
History: Received October 3, 2005; Revised February 7, 2006; Accepted April 8, 2006
Web of Science® Times Cited: 15

Purpose Examination of movement parameters and consistency has been used to infer underlying neural control of movement. However, there has been no systematic investigation of whether the way individuals are asked (or cued) to increase loudness alters articulation. This study examined whether different cues to elicit louder speech induce different lip and jaw movement parameters or consistency.

Method Thirty healthy young adults produced two sentences (a) at comfortable loudness, (b) while targeting 10 dB SPL above comfortable loudness on a sound level meter, (c) at twice their perceived comfortable loudness, and (d) while multitalker noise was played in the background. Lip and jaw kinematics and acoustic measurements were taken.

Results Each of the loud conditions resulted in a similar amount of SPL increase, about 10 dB. Speech rate was slower in the background noise condition. Changes to movement parameters and consistency (relative to comfortable) were different in the targeting condition as compared to the other loud conditions.

Conclusions The cues elicited different task demands, and therefore, different movement patterns were used by the speakers to achieve the target of increased loudness. Based on these results, cueing should be considered when eliciting increased vocal loudness in both clinical and research situations.

Acknowledgment
This research was funded by National Institute on Deafness and Other Communication Disorders Grant 1R03DC05731.
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