![]() Good interaction with the voice user interface should always lead to the buildup of trust. Trust is a foundational principle of good user experience - user engagement is built on a foundation of trust. Will it be used by one person or shared between many people? In public or private areas? How noisy is the environment? The context of use will impact many product design decisions you will make. You need to understand where and how the voice-enabled product will be used. A good persona is specific enough to evoke a unique voice and personality.Ĭreate a brand persona talk by Wally Brill. That’s why it’s vital to give your VUI a personality - create the right brand persona that matches brand values. We do it intuitively, just by listening to a voice. In a few seconds, we listen to the other person’s voice we create an impression on that person - a sense of gender, age, education, intelligence, trustworthiness, and many other characteristics. Voice is more than just a medium of interaction. Product designers need to decide what kinds of information to collect from users to personalize the experience. ![]() The more the system learns about users, the more personalized experience it should offer. The system should be able to recognize new and returning users, create user profiles and store the information the system collects in it. VUI gives product designers a unique opportunity to individualize the user’s entire interaction. Personalization is about knowing genuine user needs and wants and adapting information to them. Personalization is more than just saying “Welcome back, %username%”. If you notice that you have to explain commands, it’s a clear indication that something is wrong with your design and you need to go back to the drawing board and redesign it. It’s important to use everyday language and invite users to say things in the ways they usually do. The user shouldn’t have to remember specific phrases to get the system to do what they want to do. The conversation flow should be user-centric (resembling natural human conversation). The interaction with VUI shouldn’t feel like an interaction with a robot. If you design one of those tasks, you need to consider an experience where your users start with voice and then switch to a visual or touch interface. But you should avoid creating an action that relies on users interacting with a screen alone. For example, having users listen and browse through search results by voice can be tedious. Of course, some tasks become inefficient or impossible to complete by voice alone. While the screen can complement the voice interaction, the user should be able to complete the operation with minimum or no look at the screen. Even when a VUI device has a screen, we should always design for voice-first interactions. You need to design hands-free and eyes-free user interfaces. It was possible to get the status of your flight, make a hotel booking, transfer money between accounts using nothing more than a regular landline phone and the human voice.īefore we move to specific design recommendations, it’s essential to state the basic principles of good VUI design. For the first time in history, a digital system could recognize human voice-over calls and perform the tasks given to them. One of the first IVRs was developed in 1984 by Speechworks and Nuance, mainly for telephony, and they revolutionized the business. ![]() It was the era of Interactive voice response (IVR). The second generation of VUIs dates to the 1980s and 1990s. (Image credit: Computerhistory) ( Large preview) The photo shows only input and output controls but doesn’t show supportive electronics. Yet, Audrey proved that VUIs could be built. Due to the tech limitations, the system could only recognize the spoken numbers of “0” through “9”. The system derived its name from its ability to decode digits - Automatic Digit Recognition. In 1952, Bell Labs built a system called Audrey. The first generation of VUI is dated to the 1950s. If we go back to the real world and analyze the evolution of VUI, it’s possible to define three generations of VUIs. Since then the progress in natural language processing and machine learning has helped product creators introduce less murderous voice user interfaces in various products - from mobile phones to smart home appliances and automobiles. HAL 9000, a voice assistant from the movie “2001: A Space Odyssey”. ![]()
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