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fbtwitterlinkedinvimeoflicker grey 14rssslideshare1
Publisher: Springer
Languages: English
Types: Article
Subjects: QA76, QA75
Previous research on non-speech audio messages called earcons showed that they could provide powerful navigation cues in menu hierarchies. This work used hierarchical earcons. In this paper we suggest compound earcons provide a more flexible method for presenting this information. A set of sounds was created to represent the numbers 0-4 and dot. Sounds could then be created for any node in a hierarchy by concatenating these simple sounds. A hierarchy of four levels and 27 nodes was constructed. An experiment was conducted in which participants had to identify their location in the hierarchy by listening to an earcon. Results showed that participants could identify their location with over 97% accuracy, significantly better than with hierarchical earcons. Participants were also able to recognise previously unheard earcons with over 97% accuracy. These results showed that compound earcons are an effective way of representing hierarchies in sound.

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