The use of audio warnings as a backup to visual warnings is increasing. However, merely presenting numerous alarms as loudly as possible will not necessarily achieve the desired human response. We therefore design audio warnings which are tailored to the situation and which produce the desired effect.
Traditional warnings can present problems in distinguishing in a noisy environment such as in helicopters. Our approach to audio warning design ranges from pulses into bursts and allows the warning sound to be distinctive and memorable.
In a similar way we can calculate the volume at which the warning should be presented in an environment to guarantee detection and to keep the noise exposure down to a level of that which is necessary since any higher volume would provide no extra advantage.
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