Product design question

Design a product for the hearing impaired to help them improve their quality of life.

Practice this question out loud. An AI interviewer asks it, follows up like a real interviewer would, and scores your answer. Type or speak.

What this question tests

Accessibility-focused product sense, picking the highest-impact daily pain point to solve first.

Clarify scope: a communication tool, an environmental-awareness tool, or entertainment and media accessibility.
Pick communication as the highest-impact area.
Identify pain points: difficulty in group conversations, missing environmental sound cues, and captioning gaps in daily media.
Propose real-time speech-to-text captioning for in-person conversations, plus visual or haptic alerts for environmental sounds.
Prioritize real-time captioning first, since it addresses the most frequent daily friction.
Define success as daily active usage during in-person conversations.

Picks a specific sub-area, real-time conversation captioning, rather than a vague catch-all accessibility product.
Names existing tech building blocks, speech-to-text and wearable haptics, grounding the idea in feasibility.
Addresses environmental sound awareness, alarms and doorbells, as a distinct, safety-relevant pain point.
Chooses a usage-frequency metric over adoption alone, since daily real-world reliance is the real signal of value.

Proposing a single catch-all feature without picking the highest-impact pain point first.
Ignoring existing accessibility tools, like built-in live captioning, and not differentiating from them.

How would this differ from existing live-captioning features on phones?
How would you test this with the deaf and hard-of-hearing community during design?