arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1902.09074eess.AScs.SD
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跨通道文本无关说话人识别的通道对抗训练

Channel adversarial training for cross-channel text-independent speaker recognition

University of Science and Technology of China(中国科学技术大学);iFlytek Research(讯飞研究院);Anhui University(安徽大学)

Xin Fang, Liang Zou, Jin Li, Lei Sun, Zhen-Hua Ling

摘要:

传统的说话人识别框架(例如,i-向量和基于CNN的方法)已经成功地应用于当注册数据集的信道与测试数据集的信道相似时的各种任务。然而,在实际应用中,这两个数据集之间总是存在不匹配,这可能会严重恶化识别性能。以前,已经提出了一些信道补偿算法,例如线性判别分析(LDA)和概率LDA。然而,这些方法总是需要收集来自特定说话人的不同声道,这在实际场景中是不现实的。受领域自适应的启发,我们提出了一种新的基于深度学习的说话人识别框架,通过通道对抗训练来学习通道不变和说话人区分的语音表示。具体来说,我们首先采用梯度反转层来消除不同通道之间的变化。然后通过对抗训练将压缩后的信息投影到同一个子空间中。在54,133个说话人的测试数据集上的实验表明,该方法不仅能有效地缓解通道失配问题,而且优于现有的说话人识别方法。与基于i向量的方法和基于CNN的方法相比,我们提出的方法在Top1召回率方面分别实现了44.7%和22.6%的相对提高。

英文摘要:

The conventional speaker recognition frameworks (e.g., the i-vector and CNN-based approach) have been successfully applied to various tasks when the channel of the enrolment dataset is similar to that of the test dataset. However, in real-world applications, mismatch always exists between these two datasets, which may severely deteriorate the recognition performance. Previously, a few channel compensation algorithms have been proposed, such as Linear Discriminant Analysis (LDA) and Probabilistic LDA. However, these methods always require the collections of different channels from a specific speaker, which is unrealistic to be satisfied in real scenarios. Inspired by domain adaptation, we propose a novel deep-learning based speaker recognition framework to learn the channel-invariant and speaker-discriminative speech representations via channel adversarial training. Specifically, we first employ a gradient reversal layer to remove variations across different channels. Then, the compressed information is projected into the same subspace by adversarial training. Experiments on test datasets with 54,133 speakers demonstrate that the proposed method is not only effective at alleviating the channel mismatch problem, but also outperforms state-of-the-art speaker recognition methods. Compared with the i-vector-based method and the CNN-based method, our proposed method achieves significant relative improvement of 44.7% and 22.6% respectively in terms of the Top1 recall.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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