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# An Improved Deep Embedding Learning Method for Short Duration Speaker Verification

Gao, Zhifu, Song, Yan, McLoughlin, Ian Vince, Guo, Wu, Dai, Li-Rong (2018) An Improved Deep Embedding Learning Method for Short Duration Speaker Verification. In: ISCA Conference. . International Speech Communication Association (doi:10.21437/Interspeech.2018-1515) (KAR id:67451)

## Abstract

This paper presents an improved deep embedding learning method based on convolutional neural networks (CNN) for short-duration speaker verification (SV). Existing deep learning-based SV methods generally extract frontend embeddings from a feed-forward deep neural network, in which the long-term speaker characteristics are captured via a pooling operation over the input speech. The extracted embeddings are then scored via a backend model, such as Probabilistic Linear Discriminative Analysis (PLDA).

Two improvements are proposed for frontend embedding learning based on the CNN structure: (1) Motivated by the WaveNet for speech synthesis, dilated filters are designed to achieve a tradeoff between computational efficiency and receptive-filter size; and (2) A novel cross-convolutional-layer pooling method is exploited to capture $1^{st}$-order statistics for modelling long-term speaker characteristics. Specifically, the activations of one convolutional layer are aggregated with the guidance of the feature maps from the successive layer. To evaluate the effectiveness of our proposed methods, extensive experiments are conducted on the modified female portion of NIST SRE 2010 evaluations, with conditions ranging from 10s-10s to 5s-4s. Excellent performance has been achieved on each evaluation condition, significantly outperforming existing SV systems using i-vector and d-vector embeddings.

Item Type: Conference or workshop item (Paper) 10.21437/Interspeech.2018-1515 Speaker verification, convolution neural network, dilated convolution, cross-convolutional-layer pooling T Technology Faculties > Sciences > School of Computing > Data Science Ian McLoughlin 29 Jun 2018 09:20 UTC 29 May 2019 20:40 UTC https://kar.kent.ac.uk/id/eprint/67451 (The current URI for this page, for reference purposes) https://orcid.org/0000-0001-7111-2008
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