Abstract
Exploding balloons are popular demonstrations in introductory chemistry and physical science classes and as part of outreach programs. Anechoic measurements of various hydrogen and hydrogen-oxygen balloons were made using 3.18 and 6.35 mm microphones placed at various angles and distances from the balloon. Time waveform data from each explosion were collected at a sampling frequency of 192 kHz. Initial research, presented previously, was conducted to determine potential auditory hazard as a result of exposure to these balloons. Further analysis has been conducted on the explosions’ time waveforms and calculated spectra to characterize hydrogen-oxygen balloons as an impulsive noise source. Consideration is given to level, waveform A duration, rise time, angular variation, and repeatability. Comparisons with other impulsive noise sources are also presented.
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