The time scale of redundancy between prosody and linguistic context

• URL: http://arxiv.org/abs/2503.11630v3
• Date: Mon, 02 Jun 2025 19:12:00 GMT
• Title: The time scale of redundancy between prosody and linguistic context
• Authors: Tamar I. Regev, Chiebuka Ohams, Shaylee Xie, Lukas Wolf, Evelina Fedorenko, Alex Warstadt, Ethan G. Wilcox, Tiago Pimentel,
• Abstract summary: We find that a word's prosodic features require an extended past context to be reliably predicted.<n>We also find that a word's prosodic features show some redundancy with future words, but only with a short scale of 1-2 words.
• Score: 22.04241078302997
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: In spoken communication, information is transmitted not only via words, but also through a rich array of non-verbal signals, including prosody--the non-segmental auditory features of speech. Do these different communication channels carry distinct information? Prior work has shown that the information carried by prosodic features is substantially redundant with that carried by the surrounding words. Here, we systematically examine the time scale of this relationship, studying how it varies with the length of past and future contexts. We find that a word's prosodic features require an extended past context (3-8 words across different features) to be reliably predicted. Given that long-scale contextual information decays in memory, prosody may facilitate communication by adding information that is locally unique. We also find that a word's prosodic features show some redundancy with future words, but only with a short scale of 1-2 words, consistent with reports of incremental short-term planning in language production. Thus, prosody may facilitate communication by helping listeners predict upcoming material. In tandem, our results highlight potentially distinct roles that prosody plays in facilitating integration of words into past contexts and in helping predict upcoming words.

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