arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2203.09098cs.SDcs.LGeess.AS
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TMS:一种用于说话人嵌入的时域多尺度骨干设计

TMS: A Temporal Multi-scale Backbone Design for Speaker Embedding

Tianjin University(天津大学);Qinghai Nationalities University(青海民族大学);National Institute of Information and Communications Technology(国立信息通信技术研究所);National Institute of Informatics(国立信息学研究所);Xi’an Jiaotong University(西安交通大学)

Ruiteng Zhang, Jianguo Wei, Xugang Lu, Wenhuan Lu, Di Jin, Junhai Xu, Lin Zhang, Yantao Ji, Jianwu Dang

摘要:

说话人嵌入是一个重要的前端模块,在许多需要说话人信息的语音应用中,探索区分性的说话人特征。当前用于说话人嵌入的SOTA骨干网络被设计为从具有用于说话人表示的多分支网络架构的话语中聚合多尺度特征。然而,单纯地通过简单的全卷积运算增加多尺度特征的分支,由于模型参数和计算复杂性的快速增加,无法有效地提高性能。因此,在当前最先进的网络架构中,只有对应于有限数量的时间尺度的几个分支可以被设计用于说话人嵌入。为了解决这个问题,在本文中,我们提出了一个有效的时间多尺度(TMS)模型,多尺度分支可以有效地设计在扬声器嵌入网络几乎不增加计算成本。新模型是基于传统的TDNN,其中的网络架构被巧妙地分为两个建模运营商:一个通道建模运营商和时间多分支建模运营商。在时态多分支算子中加入时态多尺度,只需要增加少量的参数,从而节省了增加更多时态尺度分支的计算量。此外,在推理阶段,我们进一步开发了一个系统的重新参数化方法,将基于TMS的模型转换为基于单路径的拓扑结构,以提高推理速度。我们研究了新的TMS方法的自动说话人确认(ASV)在域内和域外条件下的性能。实验结果表明,基于TMS的ASV模型在性能上较SOTA ASV模型有明显提高,同时具有更快的推理速度。

英文摘要:

Speaker embedding is an important front-end module to explore discriminative speaker features for many speech applications where speaker information is needed. Current SOTA backbone networks for speaker embedding are designed to aggregate multi-scale features from an utterance with multi-branch network architectures for speaker representation. However, naively adding many branches of multi-scale features with the simple fully convolutional operation could not efficiently improve the performance due to the rapid increase of model parameters and computational complexity. Therefore, in the most current state-of-the-art network architectures, only a few branches corresponding to a limited number of temporal scales could be designed for speaker embeddings. To address this problem, in this paper, we propose an effective temporal multi-scale (TMS) model where multi-scale branches could be efficiently designed in a speaker embedding network almost without increasing computational costs. The new model is based on the conventional TDNN, where the network architecture is smartly separated into two modeling operators: a channel-modeling operator and a temporal multi-branch modeling operator. Adding temporal multi-scale in the temporal multi-branch operator needs only a little bit increase of the number of parameters, and thus save more computational budget for adding more branches with large temporal scales. Moreover, in the inference stage, we further developed a systemic re-parameterization method to convert the TMS-based model into a single-path-based topology in order to increase inference speed. We investigated the performance of the new TMS method for automatic speaker verification (ASV) on in-domain and out-of-domain conditions. Results show that the TMS-based model obtained a significant increase in the performance over the SOTA ASV models, meanwhile, had a faster inference speed.

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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