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Main Authors: Tseng, Wei-Cheng, Harwath, David
Format: Preprint
Published: 2025
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Online Access:https://arxiv.org/abs/2511.16639
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author Tseng, Wei-Cheng
Harwath, David
author_facet Tseng, Wei-Cheng
Harwath, David
contents Recent advancements in neural audio codecs have not only enabled superior audio compression but also enhanced speech synthesis techniques. Researchers are now exploring their potential as universal acoustic feature extractors for a broader range of speech processing tasks. Building on this trend, we introduce Codec2Vec, the first speech representation learning framework that relies exclusively on discrete audio codec units. This approach offers several advantages, including improved data storage and transmission efficiency, faster training, and enhanced data privacy. We explore masked prediction with various training target derivation strategies to thoroughly understand the effectiveness of this framework. Evaluated on the SUPERB benchmark, Codec2Vec achieves competitive performance compared to continuous-input models while reducing storage requirements by up to 16.5x and training time by 2.3x, showcasing its scalability and efficiency.
format Preprint
id arxiv_https___arxiv_org_abs_2511_16639
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Codec2Vec: Self-Supervised Speech Representation Learning Using Neural Speech Codecs
Tseng, Wei-Cheng
Harwath, David
Audio and Speech Processing
Computation and Language
Recent advancements in neural audio codecs have not only enabled superior audio compression but also enhanced speech synthesis techniques. Researchers are now exploring their potential as universal acoustic feature extractors for a broader range of speech processing tasks. Building on this trend, we introduce Codec2Vec, the first speech representation learning framework that relies exclusively on discrete audio codec units. This approach offers several advantages, including improved data storage and transmission efficiency, faster training, and enhanced data privacy. We explore masked prediction with various training target derivation strategies to thoroughly understand the effectiveness of this framework. Evaluated on the SUPERB benchmark, Codec2Vec achieves competitive performance compared to continuous-input models while reducing storage requirements by up to 16.5x and training time by 2.3x, showcasing its scalability and efficiency.
title Codec2Vec: Self-Supervised Speech Representation Learning Using Neural Speech Codecs
topic Audio and Speech Processing
Computation and Language
url https://arxiv.org/abs/2511.16639