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#artificial intelligence Preprint Open access

Finetuning Strategies for Querying Sounds by Vocal Imitation

Aditya Bhattacharjee Christos Plachouras Sungkyun Chang Emmanouil Benetos
Aug 2026
Artificial Intelligence

Abstract

This technical report describes our winning submission to the AES AIMLA 2025 Challenge on querying sound effects by vocal imitation. We investigate two complementary fine-tuning strategies: contrastive learning with a frozen, pretrained CED encoder, and joint contrastive-triplet learning with semi-hard negatives using a MobileNetV3 encoder. This report has been updated for posterity to include details released after the challenge.

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