F0 change due to voice loading under laboratory and field conditions. A pilot study

The aim of the study was to compare fundamental frequency (F0) values recorded in a voice laboratory with recordings made in a working environment. The subjects were three female teachers (mean age 34 years) with a healthy larynx. The subjects recorded speech samples at school (the first and last lesson of 1 working day) and in a laboratory (loading task: 45-min reading, SP>75 dB, microphone 1 m from the mouth). The results showed that F0 rose in both cases, but the changes during loading were not linear. In addition, F0 was higher under field conditions than in the laboratory.

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