Benjamin J. Luft
2025
WhiSPA: Semantically and Psychologically Aligned Whisper with Self-Supervised Contrastive and Student-Teacher Learning
Rajath Rao
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Adithya V Ganesan
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Oscar Kjell
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Jonah Luby
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Akshay Raghavan
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Scott M. Feltman
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Whitney Ringwald
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Ryan L. Boyd
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Benjamin J. Luft
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Camilo J. Ruggero
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Neville Ryant
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Roman Kotov
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H. Schwartz
Proceedings of the 63rd Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)
Current speech encoding pipelines often rely on an additional text-based LM to get robust representations of human communication, even though SotA speech-to-text models often have a LM within. This work proposes an approach to improve the LM within an audio model such that the subsequent text-LM is unnecessary. We introduce **WhiSPA** (**Whi**sper with **S**emantic and **P**sychological **A**lignment), which leverages a novel audio training objective: contrastive loss with a language model embedding as a teacher. Using over 500k speech segments from mental health audio interviews, we evaluate the utility of aligning Whisper’s latent space with semantic representations from a text autoencoder (SBERT) and lexically derived embeddings of basic psychological dimensions: emotion and personality. Over self-supervised affective tasks and downstream psychological tasks, WhiSPA surpasses current speech encoders, achieving an average error reduction of 73.4% and 83.8%, respectively. WhiSPA demonstrates that it is not always necessary to run a subsequent text LM on speech-to-text output in order to get a rich psychological representation of human communication.
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- Ryan L. Boyd 1
- Scott M. Feltman 1
- Adithya V Ganesan 1
- Oscar Kjell 1
- Roman Kotov 1
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