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This study presents results from a project named The OVE-project (Orator Verbis Electris i.e. electric speech machine). The aim of this thesis is to describe and to evaluate a set of computer - programs based on synthetic speech. The programs are designed for training phonological awareness and are intended to be used as a remedial tool for children with reading and writing problems. During the evaluation and data-collecting period the project was economically and technically connected to the department of Speech, Music and Hearing at the Royal Institute of Technology in Stockholm. My associate, during this period, late Karoly Galyas has been in charge of the technical part of the project while I have been responsible for the content and the design of programs as well as for the evaluation and the assessment studies. The thesis has two overall aims. The first is to describe, analyze and discuss the development of a specific work process based on computer based supervising with synthetic speech feedback intended for children with reading and writing problems. The second overall aim is to describe, analyze and discuss the effect of the speech feedback and the specific work process on children with reading and writing problems. The evaluation and the data collection has been done within three different phases and consists of three training studies and two experimental studies: one text reproduction study and one spelling test study. The results showed very convincingly that the speech feedback had a positive effect on the pupils' self esteem. Activity and motivation were highly improved. A remarkable improvement of the pupils' ability to concentrate and persevere was observed. The results from the spelling test study showed high improvement rates when speech feedback in ongoing writing was used compared to handwriting and ordinary computer writing without speech feedback. The potentials of the synthetic speech feedback as a means to improve reading and writing skills is discussed. / digitalisering@umu

This paper explores how touch gestures with the help of audio feedback can be used to make touch screens easy to use and possible to interact with eyes-free in an in-vehicle context. Prototypes will be created and usability tested in order to investigate how the gestures and feedback performs in the context. These results will be discussed and analyzed and transformed into a few design principles that should be considered when designing gestures for use in an in-vehicle context.

There are different ways to interact with different hardware, therefore it is important to have an understanding about what factors that affect the experience when designing interactions and interfaces. This study focuses on exploring how auditory and vibrotactile feedback are perceived by the users when they interact in a virtual AR environment. An application was developed to the AR glasses Magic Leap with different interactions, both passive and active. An experimental study was conducted with 28 participants that got to interact in this virtual environment. The study included two parts. First the participants interacted in the virtual environment where they did a think aloud. Thereafter they were interviewed. There were a total of three test cases. One with only auditory feedback, one with vibrotactile feedback, and a third that had both auditory and vibrotactile feedback. Seven of the 28 participants acted as a control group that did not have any feedback to their interactions. The study shows that using only vibrotactile feedback creates different impressions depending on earlier experiences with the same AR environment. Using only auditory feedback created an atmosphere that were close to reality. Having both feedbacks active at the same time reduced the noticed feedback and some interactions were here not even noticed at all. Passive interactions were more noticed than active interactions in all cases. / Det finns flera olika sätt att interagera med olika hårdvaror och därför är det viktigt att ha en förståelse kring vilka faktorer som påverkar upplevelsen när man designar för diverse gränssnitt och interaktioner. Den här studien fokuserar på att utforska hur auditiv och vibrationsåterkoppling uppfattas av användaren när de interagerar i en virtuell AR-miljö. En applikation var utvecklad till AR-glasögonen Magic Leap One med olika aktiva och passiva interaktioner.En experimentell studie genomfördes med 28 deltagare som fick interagera i en virtuell miljö. Studien bestod av av två delar. Först fick deltagarna interagera i en virtuell miljö där de gjorde en think aloud. Efter detta blev de intervjuade. Det var totalt tre testfall, ett hade endast auditiv återkoppling, ett hade vibrationsåterkoppling och det sista hade både auditiv och vibrationsåterkoppling. Sju av de 28 deltagarna agerade kontrollgrupp och de hade ingen återkoppling på deras interaktioner.Studien visade att bara använda vibrationsåterkoppling skapade olika intryck beroende på de tidigare erfarenheterna i samma AR-miljö. Att endast använda auditiv återkoppling skapade en atmosfär som vara nära verkligheten. Att ha båda återkopplingarna aktiva samtidigt reducerade den totala märkta återkopplingen och några interaktioner hade inte någon person som noterade någon av dem. Passiva interaktioner var mer uppmärksammade än aktiva interaktioner i alla testfallen.