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arXiv 2406.09153cs.CLcs.SDeess.AS
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LASER:通过对齐语音自监督表示进行学习以改进内容相关任务

LASER: Learning by Aligning Self-supervised Representations of Speech for Improving Content-related Tasks

The University of Sheffield(谢菲尔德大学)

Amit Meghanani, Thomas Hain

AI总结:

本文提出LASER自监督微调方法,利用带时间正则化的soft-DTW对齐损失优化语音表示,并以低成本显著提升HuBERT与WavLM在ASR和PR任务上的性能。

摘要:

基于自监督学习(SSL)的语音模型被广泛用于全栈语音处理。然而,人们已经观察到,针对内容相关任务,使用无标注语音改进基于SSL的语音表示具有挑战性,且计算成本高昂。近期已有研究尝试通过高性价比的自监督微调(SSFT)方法来解决这一问题。沿着这一方向,本文提出了一种高性价比的SSFT方法,名为“LASER:通过对齐自监督表示进行学习”。LASER基于带有时间正则化项的soft-DTW对齐损失。实验使用HuBERT和WavLM模型开展,并在SUPERB基准上针对两项内容相关任务进行评估:自动语音识别(ASR)和音素识别(PR)。仅在单块GPU上进行不到3小时的微调后,HuBERT在ASR和PR任务上分别取得3.7%和8.2%的相对提升,WavLM则分别取得4.1%和11.7%的相对提升。

英文摘要:

Self-supervised learning (SSL)-based speech models are extensively used for full-stack speech processing. However, it has been observed that improving SSL-based speech representations using unlabeled speech for content-related tasks is challenging and computationally expensive. Recent attempts have been made to address this issue with cost-effective self-supervised fine-tuning (SSFT) approaches. Continuing in this direction, a cost-effective SSFT method named "LASER: Learning by Aligning Self-supervised Representations" is presented. LASER is based on the soft-DTW alignment loss with temporal regularisation term. Experiments are conducted with HuBERT and WavLM models and evaluated on the SUPERB benchmark for two content-related tasks: automatic speech recognition (ASR) and phoneme recognition (PR). A relative improvement of 3.7% and 8.2% for HuBERT, and 4.1% and 11.7% for WavLM are observed, for the ASR and PR tasks respectively, with only < 3 hours of fine-tuning on a single GPU.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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