Download e-book for kindle: Designing Voice User Interfaces: Principles of by Cathy Pearl

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  • February 13, 2018
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By Cathy Pearl

ISBN-10: 1491955414

ISBN-13: 9781491955413

Voice person interfaces (VUIs) have gotten the entire rage this present day. yet how do you construct one who humans can truly communicate with? even if you’re designing a cellular app, a toy, or a tool equivalent to a house assistant, this useful booklet courses you thru simple VUI layout rules, is helping you opt the precise speech popularity engine, and indicates you ways to degree your VUI’s functionality and increase upon it.

Author Cathy Pearl additionally takes product managers, UX designers, and VUI designers into complicated layout themes that might help in making your VUI not only sensible, yet great.

  • Understand key VUI layout options, together with command-and-control and conversational systems
  • Decide should you may still use an avatar or different visible illustration along with your VUI
  • Explore speech acceptance know-how and its impression in your design
  • Take your VUI above and past the fundamental alternate of information
  • Learn sensible how one can attempt your VUI program with users
  • Monitor your app and tips on how to quick enhance performance
  • Get real-world examples of VUIs for domestic assistants, smartwatches, and vehicle systems

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Additional info for Designing Voice User Interfaces: Principles of Conversational Experiences

Sample text

In many cases, a turn might be someone simply making an “mm hmm” noise while the other person continues to talk. As Urban says, a lot of human–human conversations have overlapping turns; when I murmur “mm hmm,” it’s not a signal that I want the other person to stop talking and give me the conch. Instead, it’s a “liveness” indicator—I’m still here, I’m still listening. Computers are not yet able to handle this more-subtle form of turn-taking. In systems that don’t allow users to interrupt, however, this can be workable, since the “mm hmm” will not trigger the recognizer while the system is still talking.

It does have the aforementioned illuminating ring at the top, but this is generally just to indicate it’s listening (or processing), not to give you actual information. , if you asked Alexa to add an item to your shopping list). For VUI experiences for which audio feedback is the primary method to provide feedback, it is important to craft confirmations carefully. One way to do this is by using confidence thresholds. A confidence threshold is how the speech recognition engine lets you know how well it thinks it’s performed.

There are also cases for which it’s appropriate to do nothing: • The user can move forward another way (such as choosing a response via a button). • The consequence of not acting does not break the conversation. • There is a visual indicator that the system did not understand, such as an avatar continuing to engage in active listening by looking at the user. Why not just err on the side of caution and always prompt the user to speak again? Because it becomes very annoying. Humans have a variety of ways to indicate that they did not understand what was said, and one of the most common (and effective) is to say nothing.

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Designing Voice User Interfaces: Principles of Conversational Experiences by Cathy Pearl


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