On how accent distribution can signal speaker adaptation

Area of Science:

• Psycholinguistics
• Speech Communication
• Cognitive Science

Background:

• Dialogue smoothness is often linked to speaker adaptation.
• Speaker adaptation in prosody can manifest as functional coherence or formal similarity.
• Both functional and formal prosodic adaptation involve acoustic features like pitch.

Purpose of the Study:

• To investigate the impact of prosodic adaptation on perceived dialogue quality.
• To determine whether functional coherence or formal similarity in prosody is a stronger indicator of successful speaker adaptation.
• To examine how manipulated prosodic features influence listener perception of smooth conversations.

Main Methods:

• Two perception tests were conducted using artificially manipulated dialogues.
• Participants evaluated dialogues based on perceived speaker adaptation.
• Prosodic features were manipulated to create conditions of functional coherence and formal similarity.

Main Results:

• Coherent functional prosody significantly contributes to the perception of speaker adaptation.
• Similarity in prosodic form also signals adaptation, but to a lesser extent than functional coherence.
• Functional prosodic coherence emerged as a more powerful cue for perceived adaptation.

Conclusions:

• Prosodic functional coherence is a key factor in listeners' perception of effective speaker adaptation.
• While prosodic form similarity plays a role, functional adaptation is more critical for smooth-sounding dialogues.
• Understanding these prosodic cues can inform theories of conversational interaction and speech processing.