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- W4200565915 abstract "The widespread diffusion of user friendly editing software for audio signals has made audio tampering extremely accessible to anyone. Therefore, it is increasingly necessary to develop forensic methodologies aiming at verifying if a given audio content has been digitally manipulated or not. Among the multiple available audio editing techniques, a very common one is time scaling, i.e., altering the temporal evolution of an audio signal without affecting any pitch component. For instance, this can be used to slow-down or speed-up speech recordings, thus enabling the creation of natural sounding fake speech compositions. In this work, we propose to blindly detect and estimate the time scaling applied to an audio signal. To expose time scaling, we leverage a Convolutional Neural Network that analyzes the Log-Mel Spectrogram and the phase of the Short Time Fourier Transform of the input audio signal. The proposed technique is tested on different audio datasets, considering various time scaling implementations and challenging cross test scenarios." @default.
- W4200565915 created "2021-12-31" @default.
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- W4200565915 date "2021-12-07" @default.
- W4200565915 modified "2023-09-29" @default.
- W4200565915 title "Time Scaling Detection and Estimation in Audio Recordings" @default.
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- W4200565915 doi "https://doi.org/10.1109/wifs53200.2021.9648389" @default.
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