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Design for voice

How to approach voice interfaces (VUI).
Voice Interfaces like Alexa, Siri or Google Home create new challenges for designers who need work on smart objects. Thanks to the Internet of things (IoT) technology changes rapidly but design principles are still the same. In this presentation, I explored some principles about design for connected objects, I tried to identify critical points and best trend.

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Please do not hesitate to contact me if you have any questions.
Luca Lamera

Design for voice

  1. 1. DESIGN FOR VOICE O V E R V I E W H O W T O A P P R O A C H V O I C E I N T E R F A C E S
  2. 2. Laura Klein Author, Design for Voice Interfaces “Think of voice interfaces as a conversation, and, as the designer, you’re responsible for ensuring that both sides of that conversation work well”
  3. 3. Machines recognise inputs likes sounds, words or phrases in many languages. Machines understand the meaning of the words and respond appropriately. TECH CHALLENGES VOICE INPUT Recognition Understanding © Amazon inc
  4. 4. Graphical User interface VUIGUI Voice user interface © Amazon inc
  5. 5. Don't break linguistic rules. The best voice interfaces make the user feel like he’s having a perfectly normal dialog. Conversational skills How to improve Linguistic Rules Keep every conversation as short as possible. Don't be too chatty, but short and direct. Duration Is your voice assistant funny? sad? optimistic? Choose what is the best personality, different voices have different effects on people. Personality
  6. 6. Design for voice interfaces Discoverability Predictability Accessibility Visibility of the system Flexibility Privacy 01. 02. 03. 04. 05. 06.
  7. 7. Visual interfaces can give the user explicit choices. Voice interfaces need to be proactive and let user to discover features. One critical aspect is the memory load, for visual interfaces showing users things they can recognize improves usability but for voice interfaces users need to recall information. DISCOVERABILITY VOICE INTERFACE01. © Netflix
  8. 8. Siri needs to understand the input and after choose how to answer (by a message, by voice or launching an app). Designers need to work with more scenarios because the unpredictability of the input and the uncertainty of the output. PREDICTABILITY VOICE INTERFACE02. © Apple
  9. 9. Consider hands-free scenarios, not only for disabilities but for all the times that an user is not able to interact or control a device. (e.g: driving, cooking). The environment in which the interaction happen can have a huge impact on accessibility. The system must be concise and the user should control the pace of the interaction. ACCESSIBILITY VOICE INTERFACE03. ARTIFICIAL POWER
  10. 10. Before to take action users need to understand to status of the system especially for shared products (e.g. home automation products, thermostats, Lights bulbs, etc.). The system should always keep users informed about what is going on. VISIBILITY VOICE INTERFACE04. © Nest
  11. 11. A single action like: "Alexa, add milk to shopping list" is easy and quick, but several actions of the same type are repetitive and time consuming. Voice interfaces are useful if they can simplify something that would otherwise take six or eight taps. FLEXIBILITY VOICE INTERFACE05. ARTIFICIAL POWER
  12. 12. Well-designed voice interfaces should always have a fall back input method for any sensitive information. Consider private information and predicting the context in which that information will be used. PRIVACY VOICE INTERFACE06. ARTIFICIAL POWERARTIFICIAL POWER
  13. 13. Pure voice commands can be used in finite-state interaction, when the system understand and immediately execute the command. Multimodal interface Design for Voice Visual commands are useful for interactions that require negotiations, big amount of input or things that are hard to explain but easy to understand visually. Visual Combine Voice for input and Visual for output or vice-versa. It’s important to understand how to combine different tasks in a effective way. Hybrid
  14. 14. K. Whitenton Nielsen Norman Group “No matter how different the technology, the people who are using it haven’t changed.”
  15. 15. Design for Voice Interfaces http://www.oreilly.com/design/free/design-for-voice-interfaces.csp SOURCES Basic principles for designing voice user interfaces https://www.oreilly.com/ideas/basic-principles-for-designing-voice-user-interfaces Designing for voice differs from traditional UX https://techcrunch.com/2016/08/21/designing-for-voice-differs-from-traditional-ux/ Voice Interaction UX: Brave New World...Same Old Story https://www.nngroup.com/articles/voice-interaction-ux/
  16. 16. T H A N K Y O U @lameraluca lucalamera

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