文本无关说话人识别的一种多尺度特征提取方法

陈志高; 李鹏; 肖润秋; 黎塔; 王文超

doi:10.11999/JEIT200917

文本无关说话人识别的一种多尺度特征提取方法

doi: 10.11999/JEIT200917

陈志高^{1, 2},
李鹏³,
肖润秋^{1, 2},
黎塔¹,
王文超^1, ,

1.
中国科学院声学研究所语言声学与内容理解重点实验室北京 100190
2.
中国科学院大学北京 100049
3.
国家计算机网络应急技术处理协调中心北京 100029

基金项目: 国家自然科学基金(11590772, 11590774, 11590770)

详细信息

作者简介:
陈志高：男，1994年生，博士生，研究方向为说话人识别、语音信号处理、语种识别等

李鹏：男，1983年生，高级工程师，研究方向为网络与信息安全等

肖润秋：男，1995年生，博士生，研究方向为鲁棒说话人识别、语音信号处理等

黎塔：男，1983年生，研究员，研究方向为语音信号处理、大词汇自然口语语音识别、关键词识别等

王文超：男，1991年生，助理研究员，研究方向为语音信号处理、说话人识别、语种识别等

通讯作者:
王文超　wangwenchao@hccl.ioa.ac.cn

中图分类号: TN912.34
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- 被引次数: 0
出版历程
- 收稿日期: 2020-10-26
- 修回日期: 2021-03-13
- 网络出版日期: 2021-03-25
- 刊出日期: 2021-11-23

A Multiscale Feature Extraction Method for Text-independent Speaker Recognition

Zhigao CHEN^{1, 2},
Peng LI³,
Runqiu XIAO^{1, 2},
Ta LI¹,
Wenchao WANG^{1
, ,}

1.
Key Laboratory of Speech Acoustics and Content Understanding, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China
2.
University of Chinese Academy of Sciences, Beijing 100049, China
3.
National Computer Network Emergency Response Technical Team/ Coordination Center of China, Beijing 100029, China

Funds: The National Natural Science Foundation of China (11590772, 11590774, 11590770)

摘要

摘要: 近些年来，多种基于卷积神经网络(CNNs)的模型结构表现出越来越强的多尺度特征表达能力，在说话人识别的各项任务中取得了持续的性能提升。然而，目前大多数方法只能利用更深更宽的网络结构来提升性能。该文引入一种更高效的多尺度说话人特征提取框架Res2Net，并对它的模块结构进行了改进。它以一种更细粒化的工作方式，获得多种感受野的组合，从而获得多种不同尺度组合的特征表达。实验表明，该方法在参数量几乎不变的情况下，等错误率(EER)相较ResNet有20%的下降，并且在VoxCeleb, SITW等多种不同录制环境和识别任务中都有稳定的性能提升，证明了该方法的高效性和鲁棒性。改进后的全连接模块结构能更充分利用训练信息，在数据充足和任务复杂时性能提升明显。具体代码可以在https://github.com/czg0326/Res2Net-Speaker-Recognition获得。
- 说话人识别 /
- 多尺度特征 /
- 鲁棒性 /
- 高效性
Abstract: Recently in speaker recognition tasks, consistent performance gains have been continually achieved by various Convolutional Neural Networks (CNNs), which have shown increasingly stronger multiscale representation abilities. However, most existing methods enhance their strength with more layers and deeper structures. In this paper, a unique multiscale backbone architecture, Res2Net, is introduced for speaker recognition tasks, and its blocks are modified for assessment. This architecture works at a more granular level than most layer-wise networks. It improves the system by combining many equivalent receptive fields, resulting in a combination of different feature scales. The experiments results demonstrate that this architecture steadily achieves a 20% improvement on the Equal Error Rate (EER) over the baseline without additional computational burden. Its effectiveness and robustness are also verified in different environments and tasks, such as VoxCeleb and Speakers In The Wild (SITW). The modified full-connection block can make sure a more sufficient use of information and improves the performance obviously in more complex tasks. The code is available at https://github.com/czg0326/Res2Net-Speaker-Recognition.
- Speaker recognition /
- Multiscale features /
- Robustness /
- Efficiency

HTML全文

图 1 深度残差网络的残差块

下载: 全尺寸图片幻灯片

图 2 简化的Res2Net模块示意图

下载: 全尺寸图片幻灯片

图 3 全连接的Res2Net模块示意图

下载: 全尺寸图片幻灯片

表 1 VoxCeleb1测试集各系统性能表现(训练集：VoxCeleb1)

系统	等错误率EER(%)	最小检测代价函数minDCF
系统	等错误率EER(%)	P=0.1	P=0.01	P=0.001
x-vector	4.189	0.212	0.391	0.512
ResNet-50	3.955	0.212	0.404	0.483
Res2Net-50-sim	3.484	0.194	0.370	0.481
Res2Net-50-full	3.633	0.201	0.373	0.477

下载: 导出CSV

表 2 VoxCeleb1测试集各系统性能表现(训练集：VoxCeleb2)

系统	等错误率EER(%)	最小检测代价函数minDCF
系统	等错误率EER(%)	P=0.1	P=0.01	P=0.001
x-vector	2.985	0.179	0.336	0.465
ResNet-50	2.243	0.158	0.299	0.391
Res2Net-50-sim	1.729	0.143	0.271	0.405
Res2Net-50-full	1.403	0.136	0.259	0.364

下载: 导出CSV

表 3 系统VoxCeleb测试集性能

	训练集	等错率(%)
Nagrani等人^[5]	VoxCeleb1	7.80
Okabe等人^[18]	VoxCeleb1	3.85
Heo等人^[12]	VoxCeleb1	5.50
Chung等人^[13]	VoxCeleb2	3.95
Heo等人^[12]	VoxCeleb2	2.66
Zeinali等人^[17]	VoxCeleb2	1.31
本文系统	VoxCeleb1	3.266
本文系统	VoxCeleb2	1.403

下载: 导出CSV

表 4 SITW 4种测试条件下各系统性能表现

系统	训练集	SITW测试集EER(%)
系统	训练集	Core-core	Core-multi	Assist-core	Assist-multi
x-vector	VoxCeleb1	6.698	8.661	8.476	9.920
ResNet-50		7.217	9.358	9.282	10.972
Res2Net-50-sim		6.483	8.520	8.306	9.740
Res2Net-50-full	VoxCeleb2	6.603	8.575	8.297	9.516
Res2Net-50-sim		3.258	4.765	4.613	5.706
Res2Net-50-full		2.952	4.201	3.931	4.833

下载: 导出CSV

表 5 Res2Net-50调整width和scale在VoxCeleb性能表现

参数设置	等错误率EER(%)	最小检测代价函数minDCF
参数设置	等错误率EER(%)	P=0.1	P=0.01	P=0.001
7w4s	3.484	0.194	0.370	0.481
16w4s	3.446	0.186	0.357	0.491
7w8s	3.266	0.188	0.347	0.475

下载: 导出CSV

表 6 Res2Net-50调整width和scale在SITW性能表现

系统	SITW测试集EER(%)
系统	Core-core	Core-multi	Assist-core	Assist-multi
7w4s	6.483	8.520	8.306	9.740
16w4s	6.370	8.382	8.601	9.411
7w8s	5.549	7.726	7.699	9.122

下载: 导出CSV

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