Lab Talk: Focused Conversation at the Touch of a Button

Malte and Johannes opened their presentation with spoken quotes. They read out statements from people with hearing impairments that they had collected in interviews during the research phase of the project. This introduction immediately engaged us with empathy and vividly illustrated the many challenges faced by those affected.

Malte and Johannes identified one central problem: Hearing aids are not optimized for dynamic conversations involving multiple people, which has significant consequences for social participation.

They approached this problem as part of their Bachelor's thesis at the HfG Schwäbisch Gmünd. Their goal was to develop a solution that improves social inclusion.

Insights into the process

The two took us on a journey through their well-documented concept and design process, from problem analysis to early interaction prototypes, concept iterations, usability tests with patients in a rehabilitation clinic, and workshops with potential users. Malte and Johannes spoke openly about obstacles, changes in direction, and interim successes, reinforcing their design decisions.

What stood out about their process:

• Hands-on testing – no hesitation about early testing and direct contact with the target group
• Openness to the outcome
• Reduction – focus on the essentials

Voice Select – the concept

The smartphone app can be connected to hearing implants and supports users when acoustic focus on one or multiple conversation partners is required. The developed concept addresses informal group conversations, such as in a café or a larger social gathering.

Voice Select detects and tracks voices in the environment and displays them as circles in the app. Users can then manually bring certain voices into focus mode, mute them, or adjust their volume subtly. Important details have also been considered: a hear-through button, personalized volume settings, and a clear onboarding experience.

Through a concept video, they demonstrated how interaction in a lively café with several friends could work – how users can dynamically focus on smaller conversation groups and release that focus when needed. The app significantly improves participation in often noisy and somewhat chaotic group discussions. Where the mental load would otherwise be overwhelming for those affected, the discrete control of the auditory situation provides relief.

The tests in the rehabilitation clinic also yielded encouraging results. Malte and Johannes proudly shared the story of a test participant who suddenly engaged enthusiastically during a simulated group conversation despite usually being perceived as quiet and reserved in similar situations.

We could all feel it: This project is driven by passion and a dedication to good design.

Thank you to Malte and Johannes for this fascinating insight into your work. Voice Select is an impressive example of how well-designed interaction enhances or enables social inclusion. We wish you all the best and hope your concept will one day make everyday life easier for many people. You have certainly inspired us with your presentation!