SOME PHYSIOLOGICAL ACCOMPANIMENTS OF SPEAKING.
Abstract
Loud speaking involves hyperventilation. The CO2 content of alveolar gas is reduced during the speaking. The effects of nine minutes of loud reading upon the acid-base balance are not overcome in six minutes of rest. As a first approximation, the relationship between the volume of exhaled gas per unit of time and the sound pressure level (db) of a vowel-sound is apparently linear. Integrated values of the respiratory volume and the acoustic pressure that accompany the production of consonants and vowels show that: (a) the final consonant includes more acoustic pressure (and is longer) than the initial consonant; (b) saying vowels and consonants requires about the same amount of exhalation, while the vowels may contain several times as much acoustic pressure as the consonants; and (c) there are wide individual differences in the amount of gas exhaled by different speakers maintaining the same acoustic level of loud speech. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1952
- Accession Number
- AD0622976
Entities
People
- John W. Black
Organizations
- Ohio State University