{"id":9660,"date":"2023-06-15T04:29:59","date_gmt":"2023-06-15T04:29:59","guid":{"rendered":"https:\/\/www.sonyresearchindia.com\/causal-inference-the-question-of-why-in-machine-learning-and-business-analytics-copy\/"},"modified":"2023-11-30T13:11:37","modified_gmt":"2023-11-30T13:11:37","slug":"iteratively-improving-speech-recognition-and-voice-conversion","status":"publish","type":"post","link":"https:\/\/whiteriversmediasolutions.com\/Sony\/iteratively-improving-speech-recognition-and-voice-conversion\/","title":{"rendered":"Iteratively Improving Speech Recognition and Voice Conversion"},"content":{"rendered":"\t\t
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BLOGS<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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Iteratively Improving Speech Recognition\n
and Voice Conversion<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\t\t\t\tBy Mayank Kumar Singh, Senior Engineer At Sony Research India\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t15th<\/sup> June 2023\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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In this blog, Mayank Kumar Singh breaks down the the paper titled \u2018Iteratively Improving Speech Recognition and Voice Conversion<\/a>\u2019 co-authored by Mayank Kumar Singh, Naoya Takahashi, Onoe Naoyuki which has been accepted at the INTERSPEECH Conference 2023<\/a>.<\/p>

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For demo samples, please refer to the website: https:\/\/demosamplesites.github.io\/IterativeASR_VC\/<\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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In this blog, Mayank Kumar Singh breaks down the the paper titled \u2018Iteratively Improving Speech Recognition and Voice Conversion\u2019<\/a> co-authored with Naoya Takahashi (Sony Research), Onoe Naoyuki which has been accepted at the INTERSPEECH Conference 2023<\/a> at Dublin, Ireland from 20th-24th May 2023.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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Introduction<\/h4>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Speech processing technologies such as voice conversion (VC) and automatic speech recognition (ASR) have dramatically improved in the past decade owing to the advancements in deep learning technologies. However, the task of training these models remains challenging on low resource domains<\/b> as they suffer from over-fitting and do not generalize well for practical applications.<\/p>

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In this paper, we propose to iteratively improve a voice conversion model along with an automatic speech recognition model.<\/p>

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As VC models often rely on ASR model for extracting content features or imposing content consistency loss, degradation of ASR directly affects the quality of VC models. On the other hand, to improve the generalization capability of ASR model, a variety of data augmentation techniques have been proposed with voice conversion being one of them.<\/p>

\u00a0<\/p>

This creates a causality dilemma, wherein poor quality of ASR model affects VC model training which in turn leads to low quality data augmentation for training ASR models. Conversely, improving the ASR model should lead to better VC models, which should produce better data augmentation samples for improving the ASR models. Motivated from this, in this work we propose to iteratively improve the ASR model by using the VC model as a data augmentation method for training the ASR and simultaneously improve the VC model by using the ASR model for linguistic content preservation.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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Proposed Method<\/h4>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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\n\t\t\t\t\t\t\t\t\tFigure 1: Overview of our proposed method. We first train an ASR model and a VC model with a default training regime. Then using the trained VC model as data augmentation for the ASR model, we further improve the ASR model. The updated ASR model is further used in the training of an improved VC model. This step is repeated until convergence of both the ASR and VC models.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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\n\t\t\t\t\t\t\t\t\tThe proposed iterative training framework is illustrated in Figure 1 and its pseudo code is shown in Algorithm 1.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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\n\t\t\t\t\t\t\t\t\tAlgorithm 1: Iterative training of ASR and VC models\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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Results and Experiments<\/h4>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\t\t\t\tFor the results and experiments, we refer the reader to our paper which contains the detailed experimental details along with the insights that we drew from the experiments. https:\/\/arxiv.org\/pdf\/2305.15055.pdf<\/a>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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Conclusions<\/h4>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\t\t\t\tWe present a novel iterative framework for improving voice conversion models and automatic speech recognition models on low resource domains and verify its applications on the Hindi speech domain and English singing domain. We show improved speech preservation and MOS quality of the converted samples on voice conversion tasks as well as improved the word error rate on ASR tasks using this framework.\n\nFuture work includes further improving the content preservation of the one-shot VC models so as to bring WER of the VC converted samples closer to the WER on the ground truth samples which would also lead to better MOS quality. We would also like to investigate combining the ASR and VC training in an end-to-end system.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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To know more about Sony Research India\u2019s Research Publications, visit the \u2018Publications\u2019 section on our \u2018Open Innovation\u2019s page:<\/p>

Open Innovation with Sony R&D \u2013 Sony Research India<\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

In this blog, Mayank Kumar Singh breaks down the the paper titled…<\/p>\n","protected":false},"author":1,"featured_media":11331,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"footnotes":""},"categories":[22,17],"tags":[],"class_list":["post-9660","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-all-blogs","category-technology","entry"],"yoast_head":"\nIteratively Improving Speech Recognition and Voice Conversion - Sony Research India<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/whiteriversmediasolutions.com\/Sony\/iteratively-improving-speech-recognition-and-voice-conversion\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Iteratively Improving Speech Recognition and Voice Conversion - 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