A Variable Width Impulse Noise Source.
Summary technical rept.,
BENSON (ROBERT W) AND ASSOCIATES INC NASHVILLE TENN
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A study has been conducted to develop methods of controlling pulse width and rise time of the pressure pulse produced by an arc discharge. This system is of value in studying the effects of large-amplitude pressure pulses on hearing. Pulses having amplitudes in the range of 160 to 175 db sound pressure level, and durations ranging upward from 10 microseconds are produced. The rise time can range from a fraction of a microsecond up to the maximum width of the pulse. For long-duration pulses, the materials available for providing the necessary electrical characteristics will not withstand the severe environment of pressure and temperature. Further work must therefore be accomplished before reliable operation is obtained for wider pulse widths. The system, nevertheless, should result in a useful research tool for studying the effects of impulse noise upon hearing. Author
- Anatomy and Physiology