VOCAL BREAKS FROM THE MODAL TO FALSETTO REGISTER

The study offers measurements of the vocal breaks occurring from the m odal to the falsetto register in an untrained barytone. The breaks wer e achieved by increasing the expired airflow. An analogy with a labial pipe served as a help. The voice phenomena were divided into three re gions. In the region of low modal frequencies (A-e) a simultaneous sou nding of both the modal and falsetto registers was investigated. This was registered perceptually as vocal roughness. Under special conditio ns a subharmonic tone was produced. In the medium frequency region (e- g(1)) the vocal breaks occurred. The break intervals occupied the mean value of about a quint on the modal tone e. With increasing modal fre quency, the break intervals decreased. In the high-tone region (g(1)-e (2)) only the falsetto register could be produced.