Audible alarm signals for anaesthesia monitoring equipment

Int J Clin Monit Comput. 1985;1(4):251-6. doi: 10.1007/BF01720191.


To address the problem of auditory alarms on anaesthesia monitoring and delivery devices whose signal is masked by the noises of other operating room equipment, a set of signals having the characteristics of spectral richness, frequency modulation, and temporal patterning were electronically generated, and were tested for detectability against operating room equipment noises in a laboratory setting. A set of signals was identified which can, under these circumstances, be detected with at least 93% accuracy at -24 dB signal-to-noise ratio.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Anesthesiology / instrumentation*
  • Equipment Failure
  • Humans
  • Monitoring, Physiologic / instrumentation*
  • Sound