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- W2117544888 abstract "In this paper, we evaluate the vulnerability of speaker verification (SV) systems to synthetic speech. The SV systems are based on either the Gaussian mixture model–universal background model (GMM-UBM) or support vector machine (SVM) using GMM supervectors. We use a hidden Markov model (HMM)-based text-to-speech (TTS) synthesizer, which can synthesize speech for a target speaker using small amounts of training data through model adaptation of an average voice or background model. Although the SV systems have a very low equal error rate (EER), when tested with synthetic speech generated from speaker models derived from the Wall Street Journal (WSJ) speech corpus, over 81% of the matched claims are accepted. This result suggests vulnerability in SV systems and thus a need to accurately detect synthetic speech. We propose a new feature based on relative phase shift (RPS), demonstrate reliable detection of synthetic speech, and show how this classifier can be used to improve security of SV systems." @default.
- W2117544888 created "2016-06-24" @default.
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- W2117544888 date "2012-10-01" @default.
- W2117544888 modified "2023-10-11" @default.
- W2117544888 title "Evaluation of Speaker Verification Security and Detection of HMM-Based Synthetic Speech" @default.
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- W2117544888 doi "https://doi.org/10.1109/tasl.2012.2201472" @default.
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