Intonation adaptation to multiple talkers.

Area of Science:

• Psycholinguistics
• Auditory Perception
• Speech Communication

Background:

• Speech intonation conveys crucial linguistic and social information, distinguishing utterances like questions from statements.
• Significant variability in speaking voices creates ambiguity in the meaning-intonation mapping.
• Prior research indicates listeners adapt to recent speech exposure to resolve ambiguity, but primarily in single-talker contexts.

Purpose of the Study:

• To investigate how listeners adapt to speech intonation patterns when exposed to multiple talkers.
• To determine if intonation adaptation is talker-dependent, talker-independent, or a combination.

Main Methods:

• Four experiments exposed listeners to male and/or female talkers producing statements and declarative questions.
• Listeners categorized utterances from familiar talkers or a novel talker after exposure.
• Analysis focused on intonation adaptation patterns across different talker combinations.

Main Results:

• Intonation adaptation was consistently observed across all four experiments.
• Adaptation was neither strictly talker-dependent nor strictly talker-independent.
• Listeners tracked individual talker patterns while also showing generalization of adaptation across talkers.

Conclusions:

• Listener adaptation to speech intonation is complex, involving both talker-specific tracking and cross-talker generalization.
• Findings suggest adaptation mechanisms are influenced by phonetic contrast and cue distributions, similar to segmental speech perception.
• This research advances understanding of auditory adaptation in multi-talker speech environments.