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Memorization-Based Training and Testing Paradigm for Robust Vocal Identity Recognition in Expressive Speech Using Event-Related Potentials Analysis
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The effectiveness of a voice training program for telemarketers.

Andréa Gomes de Oliveira1, Nelson Gouveia, Mara Behlau

  • 1Universidade Veiga de Almeida, Rio de Janeiro, Brazil. agoaoliveira@gmail.com

Journal of Voice : Official Journal of the Voice Foundation
|August 28, 2012
PubMed
Summary

Voice training for telemarketers significantly reduced vocal jitter, an acoustic measure. However, it did not lead to noticeable changes in how their voices were perceived.

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Area of Science:

  • Occupational Health
  • Speech Science
  • Communication Studies

Background:

  • Telemarketing professionals rely heavily on vocal performance.
  • Objective assessment of voice training efficacy is crucial for this industry.

Purpose of the Study:

  • To evaluate the effectiveness of a structured voice training program for telemarketers.
  • To analyze multidimensional acoustic and perceptual changes in telemarketers' voices post-training.

Main Methods:

  • A randomized controlled trial involving 48 telemarketers.
  • Voice recordings (sustained vowel /ɛ/ and connected speech) were collected before and after an 8-week training period.
  • Acoustic analysis (e.g., jitter) and perceptual ratings were performed.

Main Results:

  • The voice training group showed a statistically significant reduction in percent jitter (P=0.044).
  • No other significant acoustic or perceptual differences were found between the training and control groups.
  • Inter-rater reliability for perceptual analysis was generally poor to fair.

Conclusions:

  • Voice training can improve specific acoustic parameters, such as vocal stability (jitter).
  • The study did not find evidence that this voice training impacts the perceptual qualities of telemarketers' voices.
  • Further research may be needed to explore training methods that yield broader perceptual improvements.