Speech recognition strategies: to avoid performance problems caused by inter-speaker variability (different people’s voices and accents), which recognition approach is typically chosen?

Introduction / Context:
Speech recognition systems contend with variability across speakers: pitch, accent, articulation, and microphone conditions. Different system designs trade convenience for robustness. The question asks which approach sidesteps inter-speaker variation by design.

Given Data / Assumptions:

• Objective: reduce errors arising from different speakers.
• Options include task styles (continuous, isolated, connected) and a training strategy (speaker-dependent).

Concept / Approach:
Speaker-dependent recognition is trained on a specific user’s voice and pronunciation. Because the acoustic and language models are adapted to one person, the system avoids the hardest generalization challenges across the population. In contrast, continuous/isolated/connected refer to how speech is segmented and processed, not to whether models are personalized.

Step-by-Step Solution:
Identify the source of difficulty: inter-speaker variability.Select the approach that personalizes models to a single speaker.Confirm that task mode (continuous vs. isolated) does not inherently solve cross-speaker variability.Choose “speaker-dependent recognition.”

Verification / Alternative check:
In practice, speaker-dependent systems historically achieved higher accuracy with limited vocabularies by requiring enrollment. Modern systems use speaker-independent models with adaptation, but the direct way to avoid variability is speaker dependence.

Why Other Options Are Wrong:
Continuous, isolated, connected: These describe temporal constraints and segmentation, not personalization to a speaker.

None of the above: incorrect because speaker-dependent is the direct mitigation.

Common Pitfalls:
Confusing “isolated word” with robustness; while easier, it still faces cross-speaker acoustic differences if models are not personalized.

Final Answer:
Speaker-dependent recognition