Usability of speech dialog systems : listening to the target audience

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Title:

Publication Information:

Berlin : Springer, 2008

Physical Description:

x, 175 p. : ill. ; 25 cm.

ISBN:

9783540783428

Subject Term:

Speech processing systems

Natural language processing (Computer science)

Added Author:

Hempel, Thomas

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Library	Item Barcode	Call Number	Material Type	Item Category 1	Status
Searching... PSZ JB	30000010193034	TK7882.S65 U734 2008	Open Access Book	Book	Searching... Unknown

Many technical issues like speech recognition and signal processing have to be addressed for the design of speech communication systems. However, before designing a speech application starts, 3 key questions that have to be answered: who will use it, why and how often? Only if the designer is clear about these questions, he is able to provide a maximum of target group orientation.

This book gives focuses on these high-level questions and gives a criteria when and how to design speech systems. After an introduction, the state of the art in modern voice user interfaces is displayed. The following parts of the book evolve criteria for designing and evaluating successful voice user interfaces. In the last chapter, outlines and trends of this fast growing area are displayed.

1 Who, Why and How Often? Key Elements for the Design of a Successful Speech Application Taking Account of the Target Groups	p. 1
1.1 Introduction	p. 3
1.2 Quality Assurance for the Development of IVR Systems - a Procedural Model	p. 5
1.2.1 Analysis of Requirements and Specification	p. 6
1.2.2 Implementation and Production	p. 7
1.2.3 Delivery	p. 8
1.3 How to Collect the Key Information for Design for a Target Group	p. 9
1.3.1 Speaker Classification: Parameters and Methods	p. 11
1.3.2 Maturity of Speaker Classification	p. 13
1.4 How to Design Dialogues for a Target Group	p. 16
1.4.1 How to Consider the Caller's Ability to Interact	p. 16
1.4.2 How to Fulfill the Caller's Expectations and Needs	p. 18
1.4.3 How to Consider the User's Linguistic Background	p. 20
1.5 Eleven Recommendations for Design for a Target Group	p. 20
1.5.1 Mixed Initiative vs. Directed Dialog	p. 20
1.5.2 Strategies for Feedback and Confirmation	p. 24
1.5.3 Structuring the Menu Tree	p. 27
1.5.4 Escalation- and Help-Strategies	p. 28
1.5.5 Degree of Automation	p. 29
1.5.6 Politeness-, Motivation- and De-Escalation-Strategies	p. 30
1.5.7 Wording, Phrasing	p. 30
1.5.8 Persona Design	p. 31
1.5.9 Background Music, Jingles	p. 33
1.5.10 Content	p. 34
1.5.11 Multilingual Services	p. 34
1.6 Discussion and Conclusion	p. 35
Acknowledgements	p. 37
References	p. 37
2 Experiences of Designing a Speech User Interface for a Smart Home Environment	p. 41
2.1 Introduction	p. 43
2.2 Basic Requirements	p. 44
2.2.1 Aim of the System - Cornerstones	p. 44
2.2.2 Expected User Groups	p. 45
2.2.3 Corporate Design	p. 46
2.2.4 Persona of the System	p. 47
2.2.5 System Output	p. 47
2.3 Dialog Strategies	p. 49
2.3.1 Keywords	p. 49
2.3.2 Information Gathering Strategy	p. 49
2.3.3 Standard Dialog Handling	p. 51
2.3.4 Exceptional Dialog Handling	p. 52
2.3.5 Additional Modalities	p. 58
2.4 Technical Realization	p. 59
2.4.1 Components of the INSPIRE System	p. 59
2.4.2 System Extension	p. 61
2.4.3 Performance	p. 62
2.5 Final Check	p. 62
2.5.1 System Improvement	p. 62
2.5.2 Alternatives	p. 63
2.6 Basic Advices	p. 64
2.7 At a Glance	p. 65
References	p. 66
3 Automatic User Classification for Speech Dialog Systems	p. 67
3.1 Introduction	p. 69
3.2 Automatic Information Retrieval and Adaptation	p. 71
3.3 User Features and Log Files	p. 75
3.4 Testing and Findings	p. 77
3.5 Summary and Outlook	p. 78
Acknowledgements	p. 79
References	p. 79
4 A new Testbed for Semi-Automatic Usability Evaluation and Optimization of Spoken Dialogue Systems	p. 81
4.1 Introduction	p. 85
4.2 Basic Information Related to Quality and Usability	p. 87
4.2.1 Information on the Signal Level	p. 88
4.2.2 Information on the Symbolic Level	p. 90
4.3 Data Acquisition	p. 91
4.4 Data Analysis	p. 92
4.4.1 Analysis with Respect to User Groups	p. 92
4.4.2 Signal Level Parameters and Recognition Performance	p. 93
4.4.3 Vocabulary Characteristics and Recognition Performance	p. 95
4.4.4 Relationship Between User Judgments and Parameters	p. 96
4.5 Testbed Integration	p. 98
4.6 Discussion and Conclusions	p. 100
Acknowledgements	p. 102
References	p. 102
5 Stylus Meets Voice - a Practitioner's View on Multimodal Input and Output	p. 105
5.1 Preface	p. 107
5.2 Basics of Multimodal Applications	p. 108
5.2.1 Components of Multimodal Applications	p. 108
5.3 Designing Multimodal Applications	p. 112
5.3.1 Consideration of External Circumstances	p. 113
5.3.2 Clear Communication on all Levels	p. 115
5.4 Summary and Conclusion	p. 120
Acknowledgements	p. 121
References	p. 121
6 More Than Words: Designing Multimodal Systems	p. 123
6.1 Multimodal User Interfaces	p. 125
6.2 Multimodal Input and Interaction Behavior	p. 127
6.3 Multimodal Output and Perception	p. 129
6.4 Making it Real: the Design Process	p. 132
6.4.1 Phase 1: Analysis - Current State	p. 135
6.4.2 Phase 2: Analysis - Weak Points	p. 136
6.4.3 Phase 3: Interaction Concept - Choice of Modalities	p. 136
6.4.4 Phase 4: Interaction Concept - Combination of Modalities	p. 136
6.4.5 Phase 5: User Interface Concept - Detailed Designs	p. 137
6.4.6 Phase 6: User Test/Review - Formative Evaluation	p. 138
6.4.7 Phase 7: Integration	p. 139
6.4.8 Phase 8: User Test/Review - Summative Evaluation	p. 139
6.5 Summary	p. 140
References	p. 140
7 Sound Branding and Corporate Voice - Strategic Brand Management Using Sound	p. 147
7.1 The Importance of the Auditory Dimension	p. 149
7.2 The Sound of a Brand	p. 150
7.3 The Sonic Equivalents of Brand Values	p. 151
7.4 The Building Blocks of Corporate Sound	p. 151
7.5 The Power of the Voice	p. 152
7.6 Brand-Specific Application	p. 152
7.7 Vocal Character	p. 154
7.8 Voice Applications	p. 154
References	p. 155
8 Speak to the Target Audience - Some Observations and Notes on the Pragmatics of Spoken Dialog Systems	p. 157
8.1 Introduction	p. 159
8.2 A Long, Long Time ago in a far Away Galaxy	p. 160
8.3 Identify Key Players	p. 162
8.4 Understand Decision Makers	p. 164
8.5 Encourage Decisions	p. 166
8.6 Live with it - but Keep up the Effort!	p. 168
References	p. 170
Acknowledgements	p. 171
Index	p. 173

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