Differential convolutional network for noise mask estimation

DİŞKEN, Gökay

doi:10.1016/j.apacoust.2023.109568

Cited by 4 publications

(1 citation statement)

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“…In (Dişken, 2023), a novel differential convolutional neural network generates finer noise masks based on directional changes of activations. These masks, combined with linear filterbank magnitudes, are inputted into various spoof detection systems, including PLDA with x-vectors, Emphasized Channel Attention, ECAPA-TDNN, and LCNN with LSTM layers.…”

Section: Introductionmentioning

confidence: 99%

Increasing Robustness of I-Vectors via Masking: A Case Study in Synthetic Speech Detection

Aydın,

Dişken

2024

UUJFE

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Ensuring security in speaker recognition systems is crucial. In the past years, it has been demonstrated that spoofing attacks can fool these systems. In order to deal with this issue, spoof speech detection systems have been developed. While these systems have served with a good performance, their effectiveness tends to degrade under noise. Traditional speech enhancement methods are not efficient for improving performance, they even make it worse. In this research paper, performance of the noise mask obtained via a convolutional neural network structure for reducing the noise effects was investigated. The mask is used to suppress noisy regions of spectrograms in order to extract robust i-vectors. The proposed system is tested on the ASVspoof 2015 database with three different noise types and accomplished superior performance compared to the traditional systems. However, there is a loss of performance in noise types that are not encountered during training phase.

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Section: Introductionmentioning

confidence: 99%