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<!doctype html>
<html lang="en">
<head>
<meta name="google-site-verification" content="ftFOlJETX-2KNjaPh8W6s8lhigItRuu9fOmjHZZ0nY0" />
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<!-- Bootstrap CSS -->
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css"
integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">
<title>Towards Fine-Grained Prosody Control for Voice Conversion</title>
</head>
<style type="text/css">
table {
width: 100%;
table-layout: fixed;
}
audio {
width: 100%;
}
thead>tr>th:first-child {
width: 96px;
}
@media (max-width: 767px) {
.big-screen {
display: none;
}
}
@media (min-width: 767px) {
.small-screen {
display: none;
}
}
</style>
<body>
<header class="header">
<div class="jumbotron bg-secondary text-center">
<div class="container">
<div class="row align-items-center">
<div class="col-md-12">
<h1><a href="https://github.com/zeroQiaoba/voice-conversion" class="text-light">
Towards Fine-Grained Prosody Control for Voice Conversion <br> (Submitted to ICASSP2019)</a></h1>
<p>
<div class="row">
<div class="col-md col-sm-12"><a class="text-light">Zheng Lian</a> </div>
</div>
</p>
<p><a class="text-light">National Laboratory of Pattern Recognition, CASIA, Beijing, China</p></a>
<p><a class="text-light">CAS Center for Excellence in Brain Science and Intelligence Technology, Beijing, China</p></a>
<p><a class="text-light">School of Artificial Intelligence, University of Chinese Academy of Sciences, Beijing, China</p></a>
</div>
</div>
</div>
</div>
</header>
<main>
<div class="container">
<div class="row" id="intro">
<div class="col">
<h2>PPGs-based Voice Conversion</h2>
<div>
<p>Phonetic PosteriorGrams (PPGs) has been successfully applied to non-parallel VC <a class="text-success" href="#1">[1]</a>.
The PPG is a sequence of frame-level linguistic information representation obtained from the speaker-independent automatic speech recognition system.
The PPGs-based VC frameworks mainly consist of two key components: the conversion model and vocoder.
The conversion model converts PPGs extracted from the source speech into acoustic features of the target speaker.
Then the vocoder uses these converted features to synthesize the speech waveform of the target speaker.
</p>
</div>
</div>
</div>
<hr>
<div class="row" id="monolingual">
<div class="col">
<h2>Baseline System</h2>
<div>
<p>
Vocoders influence the quality of converted speech. Prior works utilize conventional parametric vocoders for VC (such as STRAIGHT and WORLD).
However, these vocoders limit the speech quality. To address this issue, researches focus on the WaveNet vocoder.
The WaveNet vocoder can directly estimate the time domain waveform samples conditioned on input features.
It is shown to improve the generated speech quality significantly. However, the WaveNet vocoder runs slower than the real time.
Recently, an efficient neural vocoder called LPCNet <a class="text-success" href="#2">[2]</a> is proposed.
This vocoder can synthesize speech with close to natural quality while running faster than real time on a standard CPU.
Therefore, we use the LPCNet vocoder for VC. To control the prosody of the generated speech, we use the pitch and the vuv features as additional inputs.
</p>
<br>
<div align="center">
<img id="img1" src="./image/1.png" class="img-fluid" style="width:80%"
alt="Baseline system framework">
<figcaption class="figure-caption text-center">
Figure1. Block diagram of (a) training and (b) conversion stages of the baseline VC system.
</div>
</div>
</div>
</div>
<hr>
<div class="row" id="average">
<div class="col">
<h2>Proposed Method</h2>
<div>
<p>
Despite the good performance of the baseline system, it still has some limitations.
Firstly, the pitch detection algorithms face challenges in noise and singing conditions.
Secondly, the prosody is related with many factors, including the intonation, stress, rhythm and pitch.
In the baseline system, we only utilize the pitch to control the prosody of the generated speech.
We find this system performs badly on some challenging situations, such as the source speech is a singing voice.</p>
<p> To overcome the above limitations, we utilize the reference encoder <a class="text-success" href="#3">[3]</a> to learn a latent prosody representation
from the input speech directly. We introduce temporal structures in the reference encoder,
thus enabling fine-grained control of the prosody of the converted speech. </p>
<div align="center">
<img id="img2" src="./image/2.png" class="img-fluid" style="width:70%"
alt="Proposed system framework">
<figcaption class="figure-caption text-center">
Figure2. Block diagram of (a) training and (b) conversion stages of the proposed VC system.
</div>
<br><br>
<p>
The architecture of reference encoder is shown in Fig. 3.
It takes a mel-spectrogram as the input.
The reference encoder contains 6-layer 2D-convolutional layers.
Each layer is composed of 3 X 3 filters with 1 X 2 stride, SAME padding and ReLU activation.
The number of filters in each layer are [32, 32, 64, 64, 128, 128].
The outputs of the last convolutional layer is fed to a uni-directional Gated Recurrent Unit (GRU) with one unit and a tanh activation.
The outputs of the GRU at every time step form the variable-length prosody embeddings.
</p>
<div align="center">
<img id="img3" src="./image/3.png" class="img-fluid" style="width:20%"
alt="Proposed system framework">
<figcaption class="figure-caption text-center">
Figure3. The prosody reference encoder module.
A 6-layer stack of 2D convolutions with ReLU activations, followed by a single-layer GRU with 1 unit and a tanh activation.
</div>
</div>
</div>
</div>
<hr>
<div class="row" id="average">
<div class="col">
<h2>Comparison System</h2>
<div>
<p>
Two comparison systems are also implemented to verify the effectiveness of our proposed method.
</p>
<p>
<b>Comparison system 1</b>: It comes from the baseline system. Ignoring f0, only the 512-dimensional PPG is used to predict acoustic features.
<br>
<b>Comparison system 2</b>: It comes from the baseline system. Besides the pitch and vuv features, we also use the aperiodicity coefficient to control the prosody.
</p>
</div>
</div>
</div>
<hr>
<div class="row" id="result">
<div class="col-md-12">
<h2>Speech Samples</h2>
<p>The voice conversion experiments are conducted on our Mandarin corpora recorded by professional speakers:
<br>
Training corpus: One female speaker (TS) with 15000 utterances.
<br>
Evaluation corpus: One female speaker and one male speaker. The female speaker provides 20 samples from audiobook recordings (Audiobook).
The male speaker provides 20 songs (Song).
</p>
<h3>Song to TS</h3>
<div class="big-screen">
<table class="table">
<thead>
<tr>
<th></th>
<th>Source</th>
<th>Target</th>
<th>Baseline</th>
<th>Comparison 1</th>
<th>Comparison 2</th>
<th>Proposed</th>
</tr>
</thead>
<tbody>
<tr>
<th scope="row">Sample 1</th>
<td>
<audio controls>
<source src="./audio/luoyeguigen1.wav" type="audio/wav" />
</audio>
</td>
<td>
<audio controls>
<source src="./audio/ts00001.wav" type="audio/wav" />
</audio>
</td>
<td>
<audio controls>
<source src="./audio/luoyeguigen1-logs-TS_ppgsf0vuv_512_lpc_24k_direct3_lr0.001_model.ckpt-95000-ts.wav" type="audio/wav" />
</audio>
</td>
<td>
<audio controls>
<source src="./audio/luoyeguigen1-logs-TS_ppgs_512_lpc_24k_direct3_lr0.001_model.ckpt-153000-0.wav" type="audio/wav" />
</audio>
</td>
<td>
<audio controls>
<source src="./audio/luoyeguigen1-logs-TS_ppgsbapf0vuv_512_lpc_24k_direct3_lr0.001_model.ckpt-86000-ts.wav" type="audio/wav" />
</audio>
</td>
<td>
<audio controls>
<source src="./audio/luoyeguigen1-logs-TS_ppgs_512_lpc_24k_mel_speed_FrameLevel1_1_test2_lr0.001_model.ckpt-606000-0.wav" type="audio/wav" />
</audio>
</td>
</tr>
<tr>
<th scope="row">Sample 2</th>
<td>
<audio controls>
<source src="./audio/yanyuan1.wav" type="audio/wav" />
</audio>
</td>
<td>
<audio controls>
<source src="./audio/ts00001.wav" type="audio/wav" />
</audio>
</td>
<td>
<audio controls>
<source src="./audio/yanyuan1-logs-TS_ppgsf0vuv_512_lpc_24k_direct3_lr0.001_model.ckpt-95000-ts.wav" type="audio/wav" />
</audio>
</td>
<td>
<audio controls>
<source src="./audio/yanyuan1-logs-TS_ppgs_512_lpc_24k_direct3_lr0.001_model.ckpt-153000-0.wav" type="audio/wav" />
</audio>
</td>
<td>
<audio controls>
<source src="./audio/yanyuan1-logs-TS_ppgsbapf0vuv_512_lpc_24k_direct3_lr0.001_model.ckpt-86000-ts.wav" type="audio/wav" />
</audio>
</td>
<td>
<audio controls>
<source src="./audio/yanyuan1-logs-TS_ppgs_512_lpc_24k_mel_speed_FrameLevel1_1_test2_lr0.001_model.ckpt-606000-0.wav" type="audio/wav" />
</audio>
</td>
</tr>
<tr>
<th scope="row">Sample 3</th>
<td>
<audio controls>
<source src="./audio/mote1.wav" type="audio/wav" />
</audio>
</td>
<td>
<audio controls>
<source src="./audio/ts00001.wav" type="audio/wav" />
</audio>
</td>
<td>
<audio controls>
<source src="./audio/mote1-logs-TS_ppgsf0vuv_512_lpc_24k_direct3_lr0.001_model.ckpt-95000-ts.wav" type="audio/wav" />
</audio>
</td>
<td>
<audio controls>
<source src="./audio/mote1-logs-TS_ppgs_512_lpc_24k_direct3_lr0.001_model.ckpt-153000-0.wav" type="audio/wav" />
</audio>
</td>
<td>
<audio controls>
<source src="./audio/mote1-logs-TS_ppgsbapf0vuv_512_lpc_24k_direct3_lr0.001_model.ckpt-86000-ts.wav" type="audio/wav" />
</audio>
</td>
<td>
<audio controls>
<source src="./audio/mote1-logs-TS_ppgs_512_lpc_24k_mel_speed_FrameLevel1_1_test2_lr0.001_model.ckpt-606000-0.wav" type="audio/wav" />
</audio>
</td>
</tr>
<tr>
<th scope="row">Sample 4</th>
<td>
<audio controls>
<source src="./audio/jueqiang1.wav" type="audio/wav" />
</audio>
</td>
<td>
<audio controls>
<source src="./audio/ts00001.wav" type="audio/wav" />
</audio>
</td>
<td>
<audio controls>
<source src="./audio/jueqiang1-logs-TS_ppgsf0vuv_512_lpc_24k_direct3_lr0.001_model.ckpt-95000-ts.wav" type="audio/wav" />
</audio>
</td>
<td>
<audio controls>
<source src="./audio/jueqiang1-logs-TS_ppgs_512_lpc_24k_direct3_lr0.001_model.ckpt-153000-0.wav" type="audio/wav" />
</audio>
</td>
<td>
<audio controls>
<source src="./audio/jueqiang1-logs-TS_ppgsbapf0vuv_512_lpc_24k_direct3_lr0.001_model.ckpt-86000-ts.wav" type="audio/wav" />
</audio>
</td>
<td>
<audio controls>
<source src="./audio/jueqiang1-logs-TS_ppgs_512_lpc_24k_mel_speed_FrameLevel1_1_test2_lr0.001_model.ckpt-606000-0.wav" type="audio/wav" />
</audio>
</td>
</tr>
<tr>
<th scope="row">Sample 5</th>
<td>
<audio controls>
<source src="./audio/juhuatai2.wav" type="audio/wav" />
</audio>
</td>
<td>
<audio controls>
<source src="./audio/ts00001.wav" type="audio/wav" />
</audio>
</td>
<td>
<audio controls>
<source src="./audio/juhuatai2-logs-TS_ppgsf0vuv_512_lpc_24k_direct3_lr0.001_model.ckpt-95000-ts.wav" type="audio/wav" />
</audio>
</td>
<td>
<audio controls>
<source src="./audio/juhuatai2-logs-TS_ppgs_512_lpc_24k_direct3_lr0.001_model.ckpt-153000-0.wav" type="audio/wav" />
</audio>
</td>
<td>
<audio controls>
<source src="./audio/juhuatai2-logs-TS_ppgsbapf0vuv_512_lpc_24k_direct3_lr0.001_model.ckpt-86000-ts.wav" type="audio/wav" />
</audio>
</td>
<td>
<audio controls>
<source src="./audio/juhuatai2-logs-TS_ppgs_512_lpc_24k_mel_speed_FrameLevel1_1_test2_lr0.001_model.ckpt-606000-0.wav" type="audio/wav" />
</audio>
</td>
</tr>
<tr>
<th scope="row">Sample 6</th>
<td>
<audio controls>
<source src="./audio/gaobaiqiqiu0.wav" type="audio/wav" />
</audio>
</td>
<td>
<audio controls>
<source src="./audio/ts00001.wav" type="audio/wav" />
</audio>
</td>
<td>
<audio controls>
<source src="./audio/gaobaiqiqiu0-logs-TS_ppgsf0vuv_512_lpc_24k_direct3_lr0.001_model.ckpt-95000-ts.wav" type="audio/wav" />
</audio>
</td>
<td>
<audio controls>
<source src="./audio/gaobaiqiqiu0-logs-TS_ppgs_512_lpc_24k_direct3_lr0.001_model.ckpt-153000-0.wav" type="audio/wav" />
</audio>
</td>
<td>
<audio controls>
<source src="./audio/gaobaiqiqiu0-logs-TS_ppgsbapf0vuv_512_lpc_24k_direct3_lr0.001_model.ckpt-86000-ts.wav" type="audio/wav" />
</audio>
</td>
<td>
<audio controls>
<source src="./audio/gaobaiqiqiu0-logs-TS_ppgs_512_lpc_24k_mel_speed_FrameLevel1_1_test2_lr0.001_model.ckpt-606000-0.wav" type="audio/wav" />
</audio>
</td>
</tr>
<tr>
<th scope="row">Sample 7</th>
<td>
<audio controls>
<source src="./audio/keximeiruguo0.wav" type="audio/wav" />
</audio>
</td>
<td>
<audio controls>
<source src="./audio/ts00001.wav" type="audio/wav" />
</audio>
</td>
<td>
<audio controls>
<source src="./audio/keximeiruguo0-logs-TS_ppgsf0vuv_512_lpc_24k_direct3_lr0.001_model.ckpt-95000-ts.wav" type="audio/wav" />
</audio>
</td>
<td>
<audio controls>
<source src="./audio/keximeiruguo0-logs-TS_ppgs_512_lpc_24k_direct3_lr0.001_model.ckpt-153000-0.wav" type="audio/wav" />
</audio>
</td>
<td>
<audio controls>
<source src="./audio/keximeiruguo0-logs-TS_ppgsbapf0vuv_512_lpc_24k_direct3_lr0.001_model.ckpt-86000-ts.wav" type="audio/wav" />
</audio>
</td>
<td>
<audio controls>
<source src="./audio/keximeiruguo0-logs-TS_ppgs_512_lpc_24k_mel_speed_FrameLevel1_1_test2_lr0.001_model.ckpt-606000-0.wav" type="audio/wav" />
</audio>
</td>
</tr>
<tr>
<th scope="row">Sample 8</th>
<td>
<audio controls>
<source src="./audio/qilixiang0.wav" type="audio/wav" />
</audio>
</td>
<td>
<audio controls>
<source src="./audio/ts00001.wav" type="audio/wav" />
</audio>
</td>
<td>
<audio controls>
<source src="./audio/qilixiang0-logs-TS_ppgsf0vuv_512_lpc_24k_direct3_lr0.001_model.ckpt-95000-ts.wav" type="audio/wav" />
</audio>
</td>
<td>
<audio controls>
<source src="./audio/qilixiang0-logs-TS_ppgs_512_lpc_24k_direct3_lr0.001_model.ckpt-153000-0.wav" type="audio/wav" />
</audio>
</td>
<td>
<audio controls>
<source src="./audio/qilixiang0-logs-TS_ppgsbapf0vuv_512_lpc_24k_direct3_lr0.001_model.ckpt-86000-ts.wav" type="audio/wav" />
</audio>
</td>
<td>
<audio controls>
<source src="./audio/qilixiang0-logs-TS_ppgs_512_lpc_24k_mel_speed_FrameLevel1_1_test2_lr0.001_model.ckpt-606000-0.wav" type="audio/wav" />
</audio>
</td>
</tr>
</tbody>
</table>
</div>
<div class="small-screen">
<table class="table">
<thead>
<tr>
<th>Sample 1</th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Source</td>
<td>
<audio controls>
<source src="./audio/luoyeguigen1.wav" type="audio/wav" />
Your browser does not support the audio element.
</audio>
</td>
</tr>
<tr>
<td>Target</td>
<td>
<audio controls>
<source src="./audio/ts00001.wav" type="audio/wav" />
Your browser does not support the audio element.
</audio>
</td>
</tr>
<tr>
<td>Baseline</td>
<td>
<audio controls>
<source src="./audio/luoyeguigen1-logs-TS_ppgsf0vuv_512_lpc_24k_direct3_lr0.001_model.ckpt-95000-ts.wav" type="audio/wav" />
Your browser does not support the audio element.
</audio>
</td>
</tr>
<tr>
<td>Comparison 1</td>
<td>
<audio controls>
<source src="./audio/luoyeguigen1-logs-TS_ppgs_512_lpc_24k_direct3_lr0.001_model.ckpt-153000-0.wav" type="audio/wav" />
Your browser does not support the audio element.
</audio>
</td>
</tr>
<tr>
<td>Comparison 2</td>
<td>
<audio controls>
<source src="./audio/luoyeguigen1-logs-TS_ppgsbapf0vuv_512_lpc_24k_direct3_lr0.001_model.ckpt-86000-ts.wav" type="audio/wav" />
Your browser does not support the audio element.
</audio>
</td>
</tr>
<tr>
<td>Proposed</td>
<td>
<audio controls>
<source src="./audio/luoyeguigen1-logs-TS_ppgs_512_lpc_24k_mel_speed_FrameLevel1_1_test2_lr0.001_model.ckpt-606000-0.wav" type="audio/wav" />
Your browser does not support the audio element.
</audio>
</td>
</tr>
</tbody>
</table>
<table class="table">
<thead>
<tr>
<th>Sample 2</th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Source</td>
<td>
<audio controls>
<source src="./audio/yanyuan1.wav" type="audio/wav" />
Your browser does not support the audio element.
</audio>
</td>
</tr>
<tr>
<td>Target</td>
<td>
<audio controls>
<source src="./audio/ts00001.wav" type="audio/wav" />
Your browser does not support the audio element.
</audio>
</td>
</tr>
<tr>
<td>Baseline</td>
<td>
<audio controls>
<source src="./audio/yanyuan1-logs-TS_ppgsf0vuv_512_lpc_24k_direct3_lr0.001_model.ckpt-95000-ts.wav" type="audio/wav" />
Your browser does not support the audio element.
</audio>
</td>
</tr>
<tr>
<td>Comparison 1</td>
<td>
<audio controls>
<source src="./audio/yanyuan1-logs-TS_ppgs_512_lpc_24k_direct3_lr0.001_model.ckpt-153000-0.wav" type="audio/wav" />
Your browser does not support the audio element.
</audio>
</td>
</tr>
<tr>
<td>Comparison 2</td>
<td>
<audio controls>
<source src="./audio/yanyuan1-logs-TS_ppgsbapf0vuv_512_lpc_24k_direct3_lr0.001_model.ckpt-86000-ts.wav" type="audio/wav" />
Your browser does not support the audio element.
</audio>
</td>
</tr>
<tr>
<td>Proposed</td>
<td>
<audio controls>
<source src="./audio/yanyuan1-logs-TS_ppgs_512_lpc_24k_mel_speed_FrameLevel1_1_test2_lr0.001_model.ckpt-606000-0.wav" type="audio/wav" />
Your browser does not support the audio element.
</audio>
</td>
</tr>
</tbody>
</table>
<table class="table">
<thead>
<tr>
<th>Sample 3</th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Source</td>
<td>
<audio controls>
<source src="./audio/mote1.wav" type="audio/wav" />
Your browser does not support the audio element.
</audio>
</td>
</tr>
<tr>
<td>Target</td>
<td>
<audio controls>
<source src="./audio/ts00001.wav" type="audio/wav" />
Your browser does not support the audio element.
</audio>
</td>
</tr>
<tr>
<td>Baseline</td>
<td>
<audio controls>
<source src="./audio/mote1-logs-TS_ppgsf0vuv_512_lpc_24k_direct3_lr0.001_model.ckpt-95000-ts.wav" type="audio/wav" />
Your browser does not support the audio element.
</audio>
</td>
</tr>
<tr>
<td>Comparison 1</td>
<td>
<audio controls>
<source src="./audio/mote1-logs-TS_ppgs_512_lpc_24k_direct3_lr0.001_model.ckpt-153000-0.wav" type="audio/wav" />
Your browser does not support the audio element.
</audio>
</td>
</tr>
<tr>
<td>Comparison 2</td>
<td>
<audio controls>
<source src="./audio/mote1-logs-TS_ppgsbapf0vuv_512_lpc_24k_direct3_lr0.001_model.ckpt-86000-ts.wav" type="audio/wav" />
Your browser does not support the audio element.
</audio>
</td>
</tr>
<tr>
<td>Proposed</td>
<td>
<audio controls>
<source src="./audio/mote1-logs-TS_ppgs_512_lpc_24k_mel_speed_FrameLevel1_1_test2_lr0.001_model.ckpt-606000-0.wav" type="audio/wav" />
Your browser does not support the audio element.
</audio>
</td>
</tr>
</tbody>
</table>
<table class="table">
<thead>
<tr>
<th>Sample 4</th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Source</td>
<td>
<audio controls>
<source src="./audio/jueqiang1.wav" type="audio/wav" />
Your browser does not support the audio element.
</audio>
</td>
</tr>
<tr>
<td>Target</td>
<td>
<audio controls>
<source src="./audio/ts00001.wav" type="audio/wav" />
Your browser does not support the audio element.
</audio>
</td>
</tr>
<tr>
<td>Baseline</td>
<td>
<audio controls>
<source src="./audio/jueqiang1-logs-TS_ppgsf0vuv_512_lpc_24k_direct3_lr0.001_model.ckpt-95000-ts.wav" type="audio/wav" />
Your browser does not support the audio element.
</audio>
</td>
</tr>
<tr>
<td>Comparison 1</td>
<td>
<audio controls>
<source src="./audio/jueqiang1-logs-TS_ppgs_512_lpc_24k_direct3_lr0.001_model.ckpt-153000-0.wav" type="audio/wav" />
Your browser does not support the audio element.
</audio>
</td>
</tr>
<tr>
<td>Comparison 2</td>
<td>
<audio controls>
<source src="./audio/jueqiang1-logs-TS_ppgsbapf0vuv_512_lpc_24k_direct3_lr0.001_model.ckpt-86000-ts.wav" type="audio/wav" />
Your browser does not support the audio element.
</audio>
</td>
</tr>
<tr>
<td>Proposed</td>
<td>
<audio controls>
<source src="./audio/jueqiang1-logs-TS_ppgs_512_lpc_24k_mel_speed_FrameLevel1_1_test2_lr0.001_model.ckpt-606000-0.wav" type="audio/wav" />
Your browser does not support the audio element.
</audio>
</td>
</tr>
</tbody>
</table>
<table class="table">
<thead>
<tr>
<th>Sample 5</th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Source</td>
<td>
<audio controls>
<source src="./audio/juhuatai2.wav" type="audio/wav" />
Your browser does not support the audio element.
</audio>
</td>
</tr>
<tr>
<td>Target</td>
<td>
<audio controls>
<source src="./audio/ts00001.wav" type="audio/wav" />
Your browser does not support the audio element.
</audio>
</td>
</tr>
<tr>
<td>Baseline</td>
<td>
<audio controls>
<source src="./audio/juhuatai2-logs-TS_ppgsf0vuv_512_lpc_24k_direct3_lr0.001_model.ckpt-95000-ts.wav" type="audio/wav" />
Your browser does not support the audio element.
</audio>
</td>
</tr>
<tr>
<td>Comparison 1</td>
<td>
<audio controls>
<source src="./audio/juhuatai2-logs-TS_ppgs_512_lpc_24k_direct3_lr0.001_model.ckpt-153000-0.wav" type="audio/wav" />
Your browser does not support the audio element.
</audio>
</td>
</tr>
<tr>
<td>Comparison 2</td>
<td>
<audio controls>
<source src="./audio/juhuatai2-logs-TS_ppgsbapf0vuv_512_lpc_24k_direct3_lr0.001_model.ckpt-86000-ts.wav" type="audio/wav" />
Your browser does not support the audio element.
</audio>
</td>
</tr>
<tr>
<td>Proposed</td>
<td>
<audio controls>
<source src="./audio/juhuatai2-logs-TS_ppgs_512_lpc_24k_mel_speed_FrameLevel1_1_test2_lr0.001_model.ckpt-606000-0.wav" type="audio/wav" />
Your browser does not support the audio element.
</audio>
</td>
</tr>
</tbody>
</table>
<table class="table">
<thead>
<tr>
<th>Sample 6</th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Source</td>
<td>
<audio controls>
<source src="./audio/gaobaiqiqiu0.wav" type="audio/wav" />
Your browser does not support the audio element.
</audio>
</td>
</tr>
<tr>
<td>Target</td>
<td>
<audio controls>
<source src="./audio/ts00001.wav" type="audio/wav" />
Your browser does not support the audio element.
</audio>
</td>
</tr>
<tr>
<td>Baseline</td>
<td>
<audio controls>
<source src="./audio/gaobaiqiqiu0-logs-TS_ppgsf0vuv_512_lpc_24k_direct3_lr0.001_model.ckpt-95000-ts.wav" type="audio/wav" />
Your browser does not support the audio element.
</audio>
</td>
</tr>
<tr>
<td>Comparison 1</td>
<td>
<audio controls>
<source src="./audio/gaobaiqiqiu0-logs-TS_ppgs_512_lpc_24k_direct3_lr0.001_model.ckpt-153000-0.wav" type="audio/wav" />
Your browser does not support the audio element.
</audio>
</td>
</tr>
<tr>
<td>Comparison 2</td>
<td>
<audio controls>
<source src="./audio/gaobaiqiqiu0-logs-TS_ppgsbapf0vuv_512_lpc_24k_direct3_lr0.001_model.ckpt-86000-ts.wav" type="audio/wav" />
Your browser does not support the audio element.
</audio>
</td>
</tr>
<tr>
<td>Proposed</td>
<td>
<audio controls>
<source src="./audio/gaobaiqiqiu0-logs-TS_ppgs_512_lpc_24k_mel_speed_FrameLevel1_1_test2_lr0.001_model.ckpt-606000-0.wav" type="audio/wav" />
Your browser does not support the audio element.
</audio>
</td>
</tr>
</tbody>
</table>
<table class="table">
<thead>
<tr>
<th>Sample 7</th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Source</td>
<td>
<audio controls>
<source src="./audio/keximeiruguo0.wav" type="audio/wav" />
Your browser does not support the audio element.
</audio>
</td>
</tr>
<tr>
<td>Target</td>
<td>
<audio controls>
<source src="./audio/ts00001.wav" type="audio/wav" />
Your browser does not support the audio element.
</audio>
</td>
</tr>
<tr>
<td>Baseline</td>
<td>
<audio controls>
<source src="./audio/keximeiruguo0-logs-TS_ppgsf0vuv_512_lpc_24k_direct3_lr0.001_model.ckpt-95000-ts.wav" type="audio/wav" />
Your browser does not support the audio element.
</audio>
</td>
</tr>
<tr>
<td>Comparison 1</td>
<td>
<audio controls>
<source src="./audio/keximeiruguo0-logs-TS_ppgs_512_lpc_24k_direct3_lr0.001_model.ckpt-153000-0.wav" type="audio/wav" />
Your browser does not support the audio element.
</audio>
</td>
</tr>
<tr>
<td>Comparison 2</td>
<td>
<audio controls>
<source src="./audio/keximeiruguo0-logs-TS_ppgsbapf0vuv_512_lpc_24k_direct3_lr0.001_model.ckpt-86000-ts.wav" type="audio/wav" />
Your browser does not support the audio element.
</audio>
</td>
</tr>
<tr>
<td>Proposed</td>
<td>
<audio controls>
<source src="./audio/keximeiruguo0-logs-TS_ppgs_512_lpc_24k_mel_speed_FrameLevel1_1_test2_lr0.001_model.ckpt-606000-0.wav" type="audio/wav" />
Your browser does not support the audio element.
</audio>
</td>
</tr>
</tbody>
</table>
<table class="table">
<thead>
<tr>
<th>Sample 8</th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Source</td>
<td>
<audio controls>
<source src="./audio/qilixiang0.wav" type="audio/wav" />
Your browser does not support the audio element.
</audio>
</td>
</tr>
<tr>
<td>Target</td>
<td>
<audio controls>
<source src="./audio/ts00001.wav" type="audio/wav" />
Your browser does not support the audio element.
</audio>
</td>
</tr>
<tr>
<td>Baseline</td>
<td>
<audio controls>
<source src="./audio/qilixiang0-logs-TS_ppgsf0vuv_512_lpc_24k_direct3_lr0.001_model.ckpt-95000-ts.wav" type="audio/wav" />
Your browser does not support the audio element.
</audio>
</td>
</tr>
<tr>
<td>Comparison 1</td>
<td>
<audio controls>
<source src="./audio/qilixiang0-logs-TS_ppgs_512_lpc_24k_direct3_lr0.001_model.ckpt-153000-0.wav" type="audio/wav" />
Your browser does not support the audio element.
</audio>
</td>
</tr>
<tr>
<td>Comparison 2</td>
<td>
<audio controls>
<source src="./audio/qilixiang0-logs-TS_ppgsbapf0vuv_512_lpc_24k_direct3_lr0.001_model.ckpt-86000-ts.wav" type="audio/wav" />
Your browser does not support the audio element.