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<!DOCTYPE HTML>
<html>
<head>
<title>CLESSR-VC</title>
<style>
.image-container {
display: flex;
justify-content: center;
}
.image-container img {
max-width: 80%; /* 可以根据需要调整图片的最大宽度 */
margin-right: 10px; /* 设置图片之间的间隔 */
}
.image-caption {
font-size: 20px; /* 设置字号 */
font-weight: normal;
}
</style>
<style>
audio{
width: 175px; /* 设置播放器宽度为 300px */
}
</style>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no" />
<link rel="stylesheet" href="assets/css/main.css" />
<noscript><link rel="stylesheet" href="assets/css/noscript.css" /></noscript>
</head>
<body class="is-preload">
<!-- Header -->
<header id="header" class="alt">
<h1 style="font-size: 50px;">CLESSR-VC: Contrastive Learning Enhanced Self-Supervised Representations for One-shot Voice Conversion</h1>
<p style="font-size: 35px;">Yuhang Xue, Ning Chen<sup>*</sup>, Yixin Luo, Hongqing Zhu and Zhiying Zhu</p>
<p style=" font-size: 25px;">East China University of Science and Technology, Shanghai, 200237, China</p>
<p style="font-size: 25px;">*Corresponding author</p>
</header>
<!-- Main -->
<div id="main">
<!-- Introduction -->
<section id="abstract" class="main">
<div class="spotlight">
<div class="content">
<header class="major">
<h2>Abstract</h2>
</header>
<p style="text-align: justify; font-weight: normal">One-shot voice conversion (VC) has attracted more and more attention due to its broad prospects for practical application.
In this task, the representation ability of speech features and the model's generalization are the focus of attention. This paper
proposes a model called CLESSR-VC, which enhances pre-trained self-supervised learning (SSL) representations through contrastive
learning for one-shot VC. First, SSL features from the 23rd and 9th layers of the pre-trained WavLM are adopted to extract content
embedding and SSL speaker embedding, respectively, to ensure the model’s generalization. Then, the conventional acoustic feature
mel-spectrograms and contrastive learning are introduced to enhance the representation ability of speech features. Specifically,
contrastive learning combined with the pitch-shift augmentation method is applied to disentangle content information from SSL features
accurately. Mel-spectrograms are adopted to extract mel speaker embedding. The AM-Softmax and cross-architecture contrastive learning
are applied between SSL and mel speaker embeddings to obtain the fused speaker embedding that helps improve speech quality and speaker
similarity. Both objective and subjective evaluation results on the VCTK corpus confirm that the proposed VC model has outstanding
performance and few trainable parameters.</p>
</div>
</div>
</section>
<section id="proposed model" class="main">
<div class="spotlight">
<div class="content">
<header class="major">
<h2>Proposed Model</h2>
<div class="image-container">
<img src="images/CLESSR-VC.jpg" alt="Image1" style="margin-top: 25px"/></img>
</div>
<div class="image-container"><p class="image-caption">Fig.1: The overall architecture of the proposed model.</p>
</div>
</section>
<!-- Second Section -->
<section id="converted samples" class="main">
<header class="major">
<h2 >Converted samples</h2>
</header>
<p style="font-size: 30px; font-weight: bold">Male to Female conversion</p>
<table>
<tr>
<td style="vertical-align: middle; font-weight: bold"><center>Text</center>
<td style="vertical-align: middle; font-weight: bold"><center>Source</center>
<td style="vertical-align: middle; font-weight: bold"><center>Target</center>
</tr>
<tr>
<td style="vertical-align: middle;"><center>Some have accepted it as a miracle without physical explanation. </center>
<td style="vertical-align: middle; font-weight: bold"><center><audio controls="controls" source src="demo/Ground truth/p226_013.wav" type="audio/wav"></audio></center>
<td style="vertical-align: middle; font-weight: bold"><center><audio controls="controls" source src="demo/Ground truth/p233_054.wav" type="audio/wav"></audio></center>
</tr>
</table>
<table style="margin-top:-47px;">
<tr>
<td style="vertical-align: middle; font-weight: bold"><center>Again-VC</center>
<td style="vertical-align: middle; font-weight: bold"><center>BetaVAE-VC</center>
<td style="vertical-align: middle; font-weight: bold"><center>SRD-VC</center>
<td style="vertical-align: middle; font-weight: bold"><center>TriAAN-VC</center>
<td style="vertical-align: middle; font-weight: bold"><center>S2VC</center>
<td style="vertical-align: middle; font-weight: bold"><center>LIMI-VC</center>
<td style="vertical-align: middle; font-weight: bold"><center>Proposed</center>
</tr>
<tr>
<td><audio controls="controls" source src="demo/Again-VC/p226_013_to_p233_054.wav" type="audio/wav"></audio>
<td><audio controls="controls" source src="demo/BetaVAE/p226_013_to_p233_054.wav" type="audio/wav"></audio>
<td><audio controls="controls" source src="demo/SRD-VC/p226_013_to_p233_054.wav" type="audio/wav"></audio>
<td><audio controls="controls" source src="demo/TriAAN-VC/p226_013_to_p233_054.wav" type="audio/wav"></audio>
<td><audio controls="controls" source src="demo/S2VC/p226_013_to_p233_054.wav" type="audio/wav"></audio>
<td><audio controls="controls" source src="demo/LIMI-VC/p226_013_to_p233_054.wav" type="audio/wav"></audio>
<td><audio controls="controls" source src="demo/Proposed/p226_013_to_p233_054.wav" type="audio/wav"></audio>
</tr>
</table>
<p style="font-size: 30px; font-weight: bold">Male to Male conversion</p>
<table>
<tr>
<td style="vertical-align: middle; font-weight: bold"><center>Text</center>
<td style="vertical-align: middle; font-weight: bold"><center>Source</center>
<td style="vertical-align: middle; font-weight: bold"><center>Target</center>
</tr>
<tr>
<td style="vertical-align: middle;"><center>Some have accepted it as a miracle without physical explanation. </center>
<td style="vertical-align: middle; font-weight: bold"><center><audio controls="controls" source src="demo/Ground truth/p227_013.wav" type="audio/wav"></audio></center>
<td style="vertical-align: middle; font-weight: bold"><center><audio controls="controls" source src="demo/Ground truth/p376_040.wav" type="audio/wav"></audio></center>
</tr>
</table>
<table style="margin-top:-47px;">
<tr>
<td style="vertical-align: middle; font-weight: bold"><center>Again-VC</center>
<td style="vertical-align: middle; font-weight: bold"><center>BetaVAE-VC</center>
<td style="vertical-align: middle; font-weight: bold"><center>SRD-VC</center>
<td style="vertical-align: middle; font-weight: bold"><center>TriAAN-VC</center>
<td style="vertical-align: middle; font-weight: bold"><center>S2VC</center>
<td style="vertical-align: middle; font-weight: bold"><center>LIMI-VC</center>
<td style="vertical-align: middle; font-weight: bold"><center>Proposed</center>
</tr>
<tr>
<td><audio controls="controls" source src="demo/Again-VC/p227_013_to_p376_040.wav" type="audio/wav"></audio>
<td><audio controls="controls" source src="demo/BetaVAE/p227_013_to_p376_040.wav" type="audio/wav"></audio>
<td><audio controls="controls" source src="demo/SRD-VC/p227_013_to_p376_040.wav" type="audio/wav"></audio>
<td><audio controls="controls" source src="demo/TriAAN-VC/p227_013_to_p376_040.wav" type="audio/wav"></audio>
<td><audio controls="controls" source src="demo/S2VC/p227_013_to_p376_040.wav" type="audio/wav"></audio>
<td><audio controls="controls" source src="demo/LIMI-VC/p227_013_to_p376_040.wav" type="audio/wav"></audio>
<td><audio controls="controls" source src="demo/Proposed/p227_013_to_p376_040.wav" type="audio/wav"></audio>
</tr>
</table>
<p style="font-size: 30px; font-weight: bold">Female to Male conversion</p>
<table>
<tr>
<td style="vertical-align: middle; font-weight: bold"><center>Text</center>
<td style="vertical-align: middle; font-weight: bold"><center>Source</center>
<td style="vertical-align: middle; font-weight: bold"><center>Target</center>
</tr>
<tr>
<td style="vertical-align: middle;"><center>The tournament has now been cancelled.</center>
<td style="vertical-align: middle; font-weight: bold"><center><audio controls="controls" source src="demo/Ground truth/p230_063.wav" type="audio/wav"></audio></center>
<td style="vertical-align: middle; font-weight: bold"><center><audio controls="controls" source src="demo/Ground truth/p376_056.wav" type="audio/wav"></audio></center>
</tr>
</table>
<table style="margin-top:-47px;">
<tr>
<td style="vertical-align: middle; font-weight: bold"><center>Again-VC</center>
<td style="vertical-align: middle; font-weight: bold"><center>BetaVAE-VC</center>
<td style="vertical-align: middle; font-weight: bold"><center>SRD-VC</center>
<td style="vertical-align: middle; font-weight: bold"><center>TriAAN-VC</center>
<td style="vertical-align: middle; font-weight: bold"><center>S2VC</center>
<td style="vertical-align: middle; font-weight: bold"><center>LIMI-VC</center>
<td style="vertical-align: middle; font-weight: bold"><center>Proposed</center>
</tr>
<tr>
<td><audio controls="controls" source src="demo/Again-VC/p230_063_to_p376_056.wav" type="audio/wav"></audio>
<td><audio controls="controls" source src="demo/BetaVAE/p230_063_to_p376_056.wav" type="audio/wav"></audio>
<td><audio controls="controls" source src="demo/SRD-VC/p230_063_to_p376_056.wav" type="audio/wav"></audio>
<td><audio controls="controls" source src="demo/TriAAN-VC/p230_063_to_p376_056.wav" type="audio/wav"></audio>
<td><audio controls="controls" source src="demo/S2VC/p230_063_to_p376_056.wav" type="audio/wav"></audio>
<td><audio controls="controls" source src="demo/LIMI-VC/p230_063_to_p376_056.wav" type="audio/wav"></audio>
<td><audio controls="controls" source src="demo/Proposed/p230_063_to_p376_056.wav" type="audio/wav"></audio>
</tr>
</table>
<p style="font-size: 30px; font-weight: bold">Female to Female conversion</p>
<table>
<tr>
<td style="vertical-align: middle; font-weight: bold"><center>Text</center>
<td style="vertical-align: middle; font-weight: bold"><center>Source</center>
<td style="vertical-align: middle; font-weight: bold"><center>Target</center>
</tr>
<tr>
<td style="vertical-align: middle;"><center>Otherwise, it will cost a lot of money.</center>
<td style="vertical-align: middle; font-weight: bold"><center><audio controls="controls" source src="demo/Ground truth/p229_082.wav" type="audio/wav"></audio></center>
<td style="vertical-align: middle; font-weight: bold"><center><audio controls="controls" source src="demo/Ground truth/p233_065.wav" type="audio/wav"></audio></center>
</tr>
</table>
<table style="margin-top:-47px;margin-bottom:-150px;">
<tr>
<td style="vertical-align: middle; font-weight: bold"><center>Again-VC</center>
<td style="vertical-align: middle; font-weight: bold"><center>BetaVAE-VC</center>
<td style="vertical-align: middle; font-weight: bold"><center>SRD-VC</center>
<td style="vertical-align: middle; font-weight: bold"><center>TriAAN-VC</center>
<td style="vertical-align: middle; font-weight: bold"><center>S2VC</center>
<td style="vertical-align: middle; font-weight: bold"><center>LIMI-VC</center>
<td style="vertical-align: middle; font-weight: bold"><center>Proposed</center>
</tr>
<tr>
<td><audio controls="controls" source src="demo/Again-VC/p229_082_to_p233_065.wav" type="audio/wav"></audio>
<td><audio controls="controls" source src="demo/BetaVAE/p229_082_to_p233_065.wav" type="audio/wav"></audio>
<td><audio controls="controls" source src="demo/SRD-VC/p229_082_to_p233_065.wav" type="audio/wav"></audio>
<td><audio controls="controls" source src="demo/TriAAN-VC/p229_082_to_p233_065.wav" type="audio/wav"></audio>
<td><audio controls="controls" source src="demo/S2VC/p229_082_to_p233_065.wav" type="audio/wav"></audio>
<td><audio controls="controls" source src="demo/LIMI-VC/p229_082_to_p233_065.wav" type="audio/wav"></audio>
<td><audio controls="controls" source src="demo/Proposed/p229_082_to_p233_065.wav" type="audio/wav"></audio>
</tr>
</table>
</section>
<section id="Ablation Study" class="main">
<header class="major">
<h2 >Ablation Study</h2>
</header>
<p style="font-size: 30px; font-weight: bold">Male to Female conversion</p>
<table>
<tr>
<td style="vertical-align: middle; font-weight: bold"><center>Text</center>
<td style="vertical-align: middle; font-weight: bold"><center>Source</center>
<td style="vertical-align: middle; font-weight: bold"><center>Target</center>
</tr>
<tr>
<td style="vertical-align: middle;"><center>There is, according to legend, a boiling pot of gold at one end. </center>
<td style="vertical-align: middle; font-weight: bold"><center><audio controls="controls" source src="demo/Ground truth/p245_009.wav" type="audio/wav"></audio></center>
<td style="vertical-align: middle; font-weight: bold"><center><audio controls="controls" source src="demo/Ground truth/p225_004.wav" type="audio/wav"></audio></center>
</tr>
</table>
<table style="margin-top:-47px;">
<tr>
<td style="vertical-align: middle; font-weight: bold"><center>Methods</center>
<td style="vertical-align: middle; font-weight: bold"><center>Audio</center>
<td style="vertical-align: middle; font-weight: bold"><center>ASR Result</center>
</tr>
<tr>
<td style="vertical-align: middle; font-weight: bold"><center>Proposed</center>
<td style="vertical-align: middle; font-weight: bold"><center><audio controls="controls" source src="demo/Proposed/p245_009_to_p225_004.wav" type="audio/wav"></audio>
<td style="vertical-align: middle;"><center>there is according to legend a boiling pot of gold at one end</center>
</tr>
<tr>
<td style="vertical-align: middle; font-weight: bold; background-color: white;"><center>w/o content CL</center>
<td style="vertical-align: middle; font-weight: bold; background-color: white;"><center><audio controls="controls" source src="demo/wo_content/p245_009_to_p225_004.wav" type="audio/wav"></audio>
<td style="vertical-align: middle; background-color: white;"><center>there is according to them a boiling pot of gold and wine</center>
</tr>
<tr>
<td style="vertical-align: middle; font-weight: bold"><center>w/o mel speaker CL</center>
<td style="vertical-align: middle; font-weight: bold"><center><audio controls="controls" source src="demo/wo_mel/p245_009_to_p225_004.wav" type="audio/wav"></audio>
<td style="vertical-align: middle;"><center>there is according to legend a boiling pot of gold at one end</center>
</tr>
<tr>
<td style="vertical-align: middle; font-weight: bold"><center>w/o SSL speaker CL</center>
<td style="vertical-align: middle; font-weight: bold"><center><audio controls="controls" source src="demo/wo_ssl/p245_009_to_p225_004.wav" type="audio/wav"></audio>
<td style="vertical-align: middle;"><center>there is according to legend a boiling pot of gold at one end</center>
</tr>
</table>
<p style="font-size: 30px; font-weight: bold">Male to Male conversion</p>
<table>
<tr>
<td style="vertical-align: middle; font-weight: bold"><center>Text</center>
<td style="vertical-align: middle; font-weight: bold"><center>Source</center>
<td style="vertical-align: middle; font-weight: bold"><center>Target</center>
</tr>
<tr>
<td style="vertical-align: middle;"><center>When the sunlight strikes raindrops in the air, they act as a prism and form a rainbow.</center>
<td style="vertical-align: middle; font-weight: bold"><center><audio controls="controls" source src="demo/Ground truth/p237_006.wav" type="audio/wav"></audio></center>
<td style="vertical-align: middle; font-weight: bold"><center><audio controls="controls" source src="demo/Ground truth/p251_018.wav" type="audio/wav"></audio></center>
</tr>
</table>
<table style="margin-top:-47px;">
<tr>
<td style="vertical-align: middle; font-weight: bold"><center>Methods</center>
<td style="vertical-align: middle; font-weight: bold"><center>Audio</center>
<td style="vertical-align: middle; font-weight: bold"><center>ASR Result</center>
</tr>
<tr>
<td style="vertical-align: middle; font-weight: bold"><center>Proposed</center>
<td style="vertical-align: middle; font-weight: bold"><center><audio controls="controls" source src="demo/Proposed/p237_006_to_p251_018.wav" type="audio/wav"></audio>
<td style="vertical-align: middle;"><center>when the sunlight strikes rain drops in the air they act as a prism and form a rainbow</center>
</tr>
<tr>
<td style="vertical-align: middle; font-weight: bold; background-color: white;"><center>w/o content CL</center>
<td style="vertical-align: middle; font-weight: bold; background-color: white;"><center><audio controls="controls" source src="demo/wo_content/p237_006_to_p251_018.wav" type="audio/wav"></audio>
<td style="vertical-align: middle; background-color: white;"><center>when the sunlight strikes wing out in the air the act is imprisoned in the former wing</center>
</tr>
<tr>
<td style="vertical-align: middle; font-weight: bold"><center>w/o mel speaker CL</center>
<td style="vertical-align: middle; font-weight: bold"><center><audio controls="controls" source src="demo/wo_mel/p237_006_to_p251_018.wav" type="audio/wav"></audio>
<td style="vertical-align: middle;"><center>when the sunlight strikes rain drops in the air they act as a prism and form a rainbow</center>
</tr>
<tr>
<td style="vertical-align: middle; font-weight: bold"><center>w/o SSL speaker CL</center>
<td style="vertical-align: middle; font-weight: bold"><center><audio controls="controls" source src="demo/wo_ssl/p237_006_to_p251_018.wav" type="audio/wav"></audio>
<td style="vertical-align: middle;"><center>when the sunlight strikes raindrops in the air they act as a prism and form a rainbow</center>
</tr>
</table>
<p style="font-size: 30px; font-weight: bold">Female to Male conversion</p>
<table>
<tr>
<td style="vertical-align: middle; font-weight: bold"><center>Text</center>
<td style="vertical-align: middle; font-weight: bold"><center>Source</center>
<td style="vertical-align: middle; font-weight: bold"><center>Target</center>
</tr>
<tr>
<td style="vertical-align: middle;"><center>We have always maintained that we would never abandon Scottish football.</center>
<td style="vertical-align: middle; font-weight: bold"><center><audio controls="controls" source src="demo/Ground truth/p228_102.wav" type="audio/wav"></audio></center>
<td style="vertical-align: middle; font-weight: bold"><center><audio controls="controls" source src="demo/Ground truth/p246_121.wav" type="audio/wav"></audio></center>
</tr>
</table>
<table style="margin-top:-47px;">
<tr>
<td style="vertical-align: middle; font-weight: bold"><center>Methods</center>
<td style="vertical-align: middle; font-weight: bold"><center>Audio</center>
<td style="vertical-align: middle; font-weight: bold"><center>ASR Result</center>
</tr>
<tr>
<td style="vertical-align: middle; font-weight: bold"><center>Proposed</center>
<td style="vertical-align: middle; font-weight: bold"><center><audio controls="controls" source src="demo/Proposed/p228_102_to_p246_121.wav" type="audio/wav"></audio>
<td style="vertical-align: middle;"><center>we have always maintained that we would never abandon scottish football</center>
</tr>
<tr>
<td style="vertical-align: middle; font-weight: bold; background-color: white;"><center>w/o content CL</center>
<td style="vertical-align: middle; font-weight: bold; background-color: white;"><center><audio controls="controls" source src="demo/wo_content/p228_102_to_p246_121.wav" type="audio/wav"></audio>
<td style="vertical-align: middle; background-color: white;"><center>we have always maintained that we would never have handled such a football</center>
</tr>
<tr>
<td style="vertical-align: middle; font-weight: bold"><center>w/o mel speaker CL</center>
<td style="vertical-align: middle; font-weight: bold"><center><audio controls="controls" source src="demo/wo_mel/p228_102_to_p246_121.wav" type="audio/wav"></audio>
<td style="vertical-align: middle;"><center>we have always maintained that we would never abandon scottish football</center>
</tr>
<tr>
<td style="vertical-align: middle; font-weight: bold"><center>w/o SSL speaker CL</center>
<td style="vertical-align: middle; font-weight: bold"><center><audio controls="controls" source src="demo/wo_ssl/p228_102_to_p246_121.wav" type="audio/wav"></audio>
<td style="vertical-align: middle;"><center>we have always maintained that we would never abandon scottish football</center>
</tr>
</table>
<p style="font-size: 30px; font-weight: bold">Female to Female conversion</p>
<table>
<tr>
<td style="vertical-align: middle; font-weight: bold"><center>Text</center>
<td style="vertical-align: middle; font-weight: bold"><center>Source</center>
<td style="vertical-align: middle; font-weight: bold"><center>Target</center>
</tr>
<tr>
<td style="vertical-align: middle;"><center>Six spoons of fresh snow peas, five thick slabs of blue cheese, and maybe a snack for her brother Bob.</center>
<td style="vertical-align: middle; font-weight: bold"><center><audio controls="controls" source src="demo/Ground truth/p231_003.wav" type="audio/wav"></audio></center>
<td style="vertical-align: middle; font-weight: bold"><center><audio controls="controls" source src="demo/Ground truth/p233_039.wav" type="audio/wav"></audio></center>
</tr>
</table>
<table style="margin-top:-47px;">
<tr>
<td style="vertical-align: middle; font-weight: bold"><center>Methods</center>
<td style="vertical-align: middle; font-weight: bold"><center>Audio</center>
<td style="vertical-align: middle; font-weight: bold"><center>ASR Result</center>
</tr>
<tr>
<td style="vertical-align: middle; font-weight: bold"><center>Proposed</center>
<td style="vertical-align: middle; font-weight: bold"><center><audio controls="controls" source src="demo/Proposed/p231_003_to_p233_039.wav" type="audio/wav"></audio>
<td style="vertical-align: middle;"><center>six boons of fresh snow peas five thick slabs of blue cheese and maybe a snack for her brother bob</center>
</tr>
<tr>
<td style="vertical-align: middle; font-weight: bold; background-color: white;"><center>w/o content CL</center>
<td style="vertical-align: middle; font-weight: bold; background-color: white;"><center><audio controls="controls" source src="demo/wo_content/p231_003_to_p233_039.wav" type="audio/wav"></audio>
<td style="vertical-align: middle; background-color: white;"><center>six pounds of fresh lopes five thick slabs of blue cheese and a sack for her brother bob</center>
</tr>
<tr>
<td style="vertical-align: middle; font-weight: bold"><center>w/o mel speaker CL</center>
<td style="vertical-align: middle; font-weight: bold"><center><audio controls="controls" source src="demo/wo_mel/p231_003_to_p233_039.wav" type="audio/wav"></audio>
<td style="vertical-align: middle;"><center>six boons of fresh snow peas five thick slabs of blue cheese and maybe a snack for her brother bob</center>
</tr>
<tr>
<td style="vertical-align: middle; font-weight: bold"><center>w/o SSL speaker CL</center>
<td style="vertical-align: middle; font-weight: bold"><center><audio controls="controls" source src="demo/wo_ssl/p231_003_to_p233_039.wav" type="audio/wav"></audio>
<td style="vertical-align: middle;"><center>six beans of fresh snow peas five thick slabs of blue cheese and maybe a snack for her brother bob</center>
</tr>
</table>
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