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Auditory Alert Guidelines
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.).
2011 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [sv]

Detta projekt ska resultera i direktiv för framtida utveckling av ljudsignaler och varningsljud i bil. Signalerskarakteristiska drag undersöks för en djupare förståelse för de parametrar som ger upphov till specifika känslor ochbeteenden. Signaler från Saab 9-5 modifieras för att passa befintliga teorier om design av ljudsignaler. Dessajämförs med originalsignaler samt signaler från Saab 9-3, BMW 3-serie och Audi A6 i en användarstudie.Resultaten visar på möjligheten att utveckla mindre irriterande signaler vid lägre ljudnivåer med bibehållenallvarsnivå. Resultaten pekar även på att ökad allvarsnivå kan fås med kortare periodtid och signallängd, ökat antalrepetitioner och frekvenser samt ökad upplevd tonstyrka (på sonskalan). Resultat från SAM-skalan visar att bådeoriginal- samt modifierade signaler tenderar att placera sig enligt teorin (högre aktivering och negativitet för signalerpå höga allvarsnivåer och vice versa). Studien visade även att utförligare arbete krävs för att stärka Saabs identitetnär det gäller ljudsignaler och att detaljerade studier om perception och förarbeteende krävs vid framtagning av nyasignaler.

Abstract [en]

This project aims to result in guidelines for future development of auditory signals in cars. The characteristics ofdifferent types of signals are investigated for a greater understanding of what parameters in auditory signals thatgive rise to certain feelings or behaviour. Auditory signals from Saab 9-5 are modified to fit existing theories aboutauditory alerts. These are then compared to their original signals and signals from Saab 9-3, BMW 3-series and AudiA6 in a user study. The results show that there is a possibility to design signals with no significant difference inurgency that are seen as less annoying at lower sound levels. Urgency seems to depend negatively on sound cadenceand signal length and positively on number of repetitions and frequencies and also loudness. SAM scale resultsshowed that both original and modified signals tend to move according to desired theories (higher activation andlower valence for high urgency signals and vice versa). The study also showed that further work needs to be put onstrengthening Saabs brand identity concerning auditory signals and that detailed studies on driver perception andbehaviour is needed when developing new signals.

Place, publisher, year, edition, pages
2011. , 55 p.
Series
MMK 2011:59 IDE 079
Keyword [en]
Auditory Alert, Warnings, Vehicle, Urgency, Sound Parameters
Keyword [sv]
Ljudsignaler, Varning, Fordon, Allvarsnivå, Ljudparametrar
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-103818OAI: oai:DiVA.org:kth-103818DiVA: diva2:561921
Uppsok
Technology
Supervisors
Examiners
Available from: 2012-10-22 Created: 2012-10-22 Last updated: 2012-10-22Bibliographically approved

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Auditory Alert Guidelines(1563 kB)238 downloads
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Type fulltextMimetype application/pdf

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