1. Muhammad Ejaz Ahmed, Il-Youp Kwak, Jun Ho Huh, Iljoo Kim, Taekkyung Oh, and Hyoungshick Kim. 2020. Void: A Fast and Light Voice Liveness Detection System. USENIX Association, USA.
2. Thomas Brewster. 2022. Fraudsters cloned company director's voice in $35 million bank heist police find. https://www.forbes.com/sites/thomasbrewster/2021/10/14/huge-bank-fraud-uses-deep-fake-voice-tech-to-steal-millions/?sh=776258a75591
3. Calculation of a constant Q spectral transform
4. Tom Bäckström. 2019. Spectrogram and the STFT. online. https://wiki.aalto.fi/display/ITSP/Spectrogram+and+the+STFT