RepAugment: Input-Agnostic Representation-Level Augmentation for Respiratory Sound Classification
<|reference_start|>RepAugment: Input-Agnostic Representation-Level Augmentation for Respiratory Sound Classification: Recent advancements in AI have democratized its deployment as a healthcare assistant. While pretrained models from large-scale visual and audio datasets have demonstrably generalized to this task, surprisingly, no studies have explored pretrained speech models, which, as human-originated sounds, intuitively would share closer resemblance to lung sounds. This paper explores the efficacy of pretrained speech models for respiratory sound classification. We find that there is a characterization gap between speech and lung sound samples, and to bridge this gap, data augmentation is essential. However, the most widely used augmentation technique for audio and speech, SpecAugment, requires 2-dimensional spectrogram format and cannot be applied to models pretrained on speech waveforms. To address this, we propose RepAugment, an input-agnostic representation-level augmentation technique that outperforms SpecAugment, but is also suitable for respiratory sound classification with waveform pretrained models. Experimental results show that our approach outperforms the SpecAugment, demonstrating a substantial improvement in the accuracy of minority disease classes, reaching up to 7.14%.<|reference_end|>
@article{kim2024repaugment:,
    title={RepAugment: Input-Agnostic Representation-Level Augmentation for
  Respiratory Sound Classification},
    author={June-Woo Kim, Miika Toikkanen, Sangmin Bae, Minseok Kim, Ho-Young Jung},
    journal={arXiv preprint arXiv:2405.02996},
    year={2024},
    archivePrefix={arXiv},
    eprint={2405.02996},
    primaryClass={cs.SD cs.AI eess.AS}
}