Integrated Multi-Level Knowledge Distillation for Enhanced Speaker Verification

Fuente: arXiv
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Autori principali: Yang, Wenhao, Wei, Jianguo, Lu, Wenhuan, Lu, Xugang, Li, Lei
Natura: Preprint
Pubblicazione: 2024
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author Yang, Wenhao
Wei, Jianguo
Lu, Wenhuan
Lu, Xugang
Li, Lei
author_facet Yang, Wenhao
Wei, Jianguo
Lu, Wenhuan
Lu, Xugang
Li, Lei
contents Knowledge distillation (KD) is widely used in audio tasks, such as speaker verification (SV), by transferring knowledge from a well-trained large model (the teacher) to a smaller, more compact model (the student) for efficiency and portability. Existing KD methods for SV often mirror those used in image processing, focusing on approximating predicted probabilities and hidden representations. However, these methods fail to account for the multi-level temporal properties of speech audio. In this paper, we propose a novel KD method, i.e., Integrated Multi-level Knowledge Distillation (IML-KD), to transfer knowledge of various temporal-scale features of speech from a teacher model to a student model. In the IML-KD, temporal context information from the teacher model is integrated into novel Integrated Gradient-based input-sensitive representations from speech segments with various durations, and the student model is trained to infer these representations with multi-level alignment for the output. We conduct SV experiments on the VoxCeleb1 dataset to evaluate the proposed method. Experimental results demonstrate that IML-KD significantly enhances KD performance, reducing the Equal Error Rate (EER) by 5%.
format Preprint
id arxiv_https___arxiv_org_abs_2409_09389
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Integrated Multi-Level Knowledge Distillation for Enhanced Speaker Verification
Yang, Wenhao
Wei, Jianguo
Lu, Wenhuan
Lu, Xugang
Li, Lei
Audio and Speech Processing
Sound
Knowledge distillation (KD) is widely used in audio tasks, such as speaker verification (SV), by transferring knowledge from a well-trained large model (the teacher) to a smaller, more compact model (the student) for efficiency and portability. Existing KD methods for SV often mirror those used in image processing, focusing on approximating predicted probabilities and hidden representations. However, these methods fail to account for the multi-level temporal properties of speech audio. In this paper, we propose a novel KD method, i.e., Integrated Multi-level Knowledge Distillation (IML-KD), to transfer knowledge of various temporal-scale features of speech from a teacher model to a student model. In the IML-KD, temporal context information from the teacher model is integrated into novel Integrated Gradient-based input-sensitive representations from speech segments with various durations, and the student model is trained to infer these representations with multi-level alignment for the output. We conduct SV experiments on the VoxCeleb1 dataset to evaluate the proposed method. Experimental results demonstrate that IML-KD significantly enhances KD performance, reducing the Equal Error Rate (EER) by 5%.
title Integrated Multi-Level Knowledge Distillation for Enhanced Speaker Verification
topic Audio and Speech Processing
Sound
url https://arxiv.org/abs/2409.09389