Can CLIP Help Sound Source Localization?

• URL: http://arxiv.org/abs/2311.04066v1
• Date: Tue, 7 Nov 2023 15:26:57 GMT
• Title: Can CLIP Help Sound Source Localization?
• Authors: Sooyoung Park, Arda Senocak, Joon Son Chung
• Abstract summary: We introduce a framework that translates audio signals into tokens compatible with CLIP's text encoder. By directly using these embeddings, our method generates audio-grounded masks for the provided audio. Our findings suggest that utilizing pre-trained image-text models enable our model to generate more complete and compact localization maps for the sounding objects.
• Score: 19.370071553914954
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Large-scale pre-trained image-text models demonstrate remarkable versatility across diverse tasks, benefiting from their robust representational capabilities and effective multimodal alignment. We extend the application of these models, specifically CLIP, to the domain of sound source localization. Unlike conventional approaches, we employ the pre-trained CLIP model without explicit text input, relying solely on the audio-visual correspondence. To this end, we introduce a framework that translates audio signals into tokens compatible with CLIP's text encoder, yielding audio-driven embeddings. By directly using these embeddings, our method generates audio-grounded masks for the provided audio, extracts audio-grounded image features from the highlighted regions, and aligns them with the audio-driven embeddings using the audio-visual correspondence objective. Our findings suggest that utilizing pre-trained image-text models enable our model to generate more complete and compact localization maps for the sounding objects. Extensive experiments show that our method outperforms state-of-the-art approaches by a significant margin.

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