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Main Authors: Kishi, Minoru, Sakai, Ryosuke, Takamichi, Shinnosuke, Kanamori, Yusuke, Okamoto, Yuki
Format: Preprint
Published: 2025
Subjects:
Online Access:https://arxiv.org/abs/2507.00475
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author Kishi, Minoru
Sakai, Ryosuke
Takamichi, Shinnosuke
Kanamori, Yusuke
Okamoto, Yuki
author_facet Kishi, Minoru
Sakai, Ryosuke
Takamichi, Shinnosuke
Kanamori, Yusuke
Okamoto, Yuki
contents We propose a novel objective evaluation metric for synthesized audio in text-to-audio (TTA), aiming to improve the performance of TTA models. In TTA, subjective evaluation of the synthesized sound is an important, but its implementation requires monetary costs. Therefore, objective evaluation such as mel-cepstral distortion are used, but the correlation between these objective metrics and subjective evaluation values is weak. Our proposed objective evaluation metric, AudioBERTScore, calculates the similarity between embedding of the synthesized and reference sounds. The method is based not only on the max-norm used in conventional BERTScore but also on the $p$-norm to reflect the non-local nature of environmental sounds. Experimental results show that scores obtained by the proposed method have a higher correlation with subjective evaluation values than conventional metrics.
format Preprint
id arxiv_https___arxiv_org_abs_2507_00475
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle AudioBERTScore: Objective Evaluation of Environmental Sound Synthesis Based on Similarity of Audio embedding Sequences
Kishi, Minoru
Sakai, Ryosuke
Takamichi, Shinnosuke
Kanamori, Yusuke
Okamoto, Yuki
Sound
Audio and Speech Processing
We propose a novel objective evaluation metric for synthesized audio in text-to-audio (TTA), aiming to improve the performance of TTA models. In TTA, subjective evaluation of the synthesized sound is an important, but its implementation requires monetary costs. Therefore, objective evaluation such as mel-cepstral distortion are used, but the correlation between these objective metrics and subjective evaluation values is weak. Our proposed objective evaluation metric, AudioBERTScore, calculates the similarity between embedding of the synthesized and reference sounds. The method is based not only on the max-norm used in conventional BERTScore but also on the $p$-norm to reflect the non-local nature of environmental sounds. Experimental results show that scores obtained by the proposed method have a higher correlation with subjective evaluation values than conventional metrics.
title AudioBERTScore: Objective Evaluation of Environmental Sound Synthesis Based on Similarity of Audio embedding Sequences
topic Sound
Audio and Speech Processing
url https://arxiv.org/abs/2507.00475