The role of sound in UX

Interaction sounds provide feedback and delight to the user

The sounds in the Toto and the Magic Tree prototype help guide and delight the user.

The button clicks provide feedback to the user by letting them know they have made that action — for a younger audience this is suitable.

Interaction sounds react to the user’s actions and give an overall more pleasant user experience.

These guys are a part of your interface; they are complementary to it as they impact the auditory sense. It is always pleasing to sense the results of your activities and to realize that everything went well. When your interface responds with an unobtrusive “click” after a message has been sent or an item in your “To Do” list has been completed and/or anything else, it really adds some positive and pleasant emotions. Thus the dialogue between the user and the application becomes a true bilateral interaction.

See UX Planets post on Sound in UX for more: https://uxplanet.org/the-role-of-sounds-in-ux-47adb8f82b38

The sounds in the Explory book also provide an educational purpose, helping young children learn the sounds that different jungle animals make. Children will learn that by interacting with and tapping areas of the screen, they will be met with sounds and sometimes animations.

The sounds in the book are limited, as it’s important not to overdo it. The sounds could become distracting and clutter the experience. Each sound in the Explory book provides a purpose–when a character moves or an object is tapped.