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◆ AI Learning · Hard rule

How should text-to-speech (TTS) work with on-screen text?

When an AI model speaks text, the words being spoken should highlight on the screen. This helps the user follow along. The user needs controls to pause, move forward, or repeat the audio.

By Pawan Nayar · from the LLOS AI Learning record

The rule

When an AI model speaks text, the words being spoken should highlight on the screen.

This helps the user follow along. The user needs controls to pause, move forward, or repeat the audio.

When an AI model uses text-to-speech, the text that is currently being spoken must highlight. This allows the user to listen and read at the same time. The user can choose to only listen or only read. The user can also do both. Controls for pausing, skipping, and replaying the audio must always be easy to see.

A student uses an AI model to learn a new language. The AI model speaks a sentence. As the AI model speaks, each word in the sentence highlights on the screen. The student can pause the audio to look up a word. The student can also replay the sentence to practice pronunciation.

Words you'll need

Resolved from this lesson's own record — real definitions, not invented for this page.

Human-Computer Interaction

How people and computers communicate and work together

User Experience

How people feel and succeed when interacting with AI systems

Natural Language Processing

AI understanding and generating human language

Audio-Visual Synchronization

Matching sound with video content

Questions people ask

More from the same record, pulled by shared topic — not written new for this page.

How should an AI model's text-to-speech (TTS) function behave?

The AI model's 'Listen' button should change to 'Stop' when speech begins. The button should change back to 'Listen' when speech ends.

How does an AI model choose the right mentor text for a user?

The AI model finds mentor texts from a large collection of sentences. It filters these sentences using the user's skill level, like their age range.

How does an AI model use an inline dropdown for a test?

An inline dropdown is a special way to ask questions. The question appears directly within a sentence.

How should text color be chosen for light backgrounds?

All text on light backgrounds must be a very dark color. Use colors like #1a1c1e or #333.

What to remember

When an AI model speaks text, the words being spoken should highlight on the screen. This helps the user follow along. The user needs controls to pause, move forward, or repeat the audio.