Management and Organizational Studies 3305A/B Chapter Notes - Chapter 5: Universal Windows Platform Apps, Echoic Memory, List Of Muppets

• School: Western University
• Department: Management and Organizational Studies
• Course: Management and Organizational Studies 3305A/B
• Professor: Suzanne Kearns

Document Summary

Sound: a vibration of air molecules, represented as a sine wave, characteristics of sound. Distinguishes wiling of a siren from stead car horn. Amplitude is expressed in decibels (db: decibels represent sound in 2 ways. Ratio hearable sound: hearable sound (ambient noise) Eustachian tube connects ears to mouth and noise. Hammer/anvil/stirrup are 3 bones amplify sound auditory nerve brain. Designing good alarms depends on good understanding of auditory processing. Auditory system is: omni-directional, more difficult to close ears than eyes, auditory alarms induce greater compliance. If an alarm must be recognized, it should be auditory: redundancy in visual or tactile channel is beneficial (i. e. redundancy = horn and buffeting for stall) Alarm must be heard: at least 15db (higher than ambient noise) 30db difference should guarantee audibility. Should contain variable frequencies (older people might not hear) Alarm should not be above the danger threshold of human hearing 85-90db.