Calculation of the relative speed of sound in a gas mixture
Ackerman, M.J.; Maitland, G.
Undersea Biomedical Research 2(4): 305-310
1975
ISSN/ISBN: 0093-5387 PMID: 1226588 Document Number: 93376
Since the frequency spectrum of a voice signal is directly dependent on the velocity of sound, studies of speech spectra include the problem of calculating the speed of sound in the gas mixture being used. A computer program written in BASIC has been developed to calculate the speed of sound relative to air in various diving gas mixtures. In addition, a set of tables available as a separate technical report has been generated using this program. These tables are designed to provide a standard reference for reporting spectral shifts in speech due to different gas mixtures under normal diving conditions.