Accession Number : AD0622976

Title :   SOME PHYSIOLOGICAL ACCOMPANIMENTS OF SPEAKING.

Descriptive Note : Joint project rept.,

Corporate Author : OHIO STATE UNIV RESEARCH FOUNDATION COLUMBUS

Personal Author(s) : Black,John W.

Report Date : 01 APR 1952

Pagination or Media Count : 35

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)

Descriptors :   (*SPEECH, PHYSIOLOGY), ACID BASE EQUILIBRIUM, CARBON DIOXIDE, ACOUSTIC PROPERTIES, PRESSURE, RESPIRATION, SOUND, SPEECH REPRESENTATION, INTENSITY

Distribution Statement : APPROVED FOR PUBLIC RELEASE