Method, device, electronic device, and storage medium for detecting tampered audio
A detection method and audio technology, applied in speech analysis, instruments, etc., can solve problems such as unusable and limited application scenarios
Active Publication Date: 2021-11-16
INST OF AUTOMATION CHINESE ACAD OF SCI
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[0004] In order to solve the above-mentioned technical problems or at least partly solve the above-mentioned technical problems, embodiments of the present disclosure provide a method, device, electronic device and storage medium for detecting tampered audio, so as to at least solve the problem of detecting tampering in the prior art. The application scenarios of the audio method are limited, and the problem that it cannot be used in some scenarios
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[0028] Hereinafter, the present disclosure will be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, in the case of no conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other.
[0029] It should be noted that the terms "first" and "second" in the specification and claims of the present disclosure and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence.
[0030] The method embodiments provided by the embodiments of the present disclosure may be executed in a computer terminal or a similar computing device. Take running on a computer terminal as an example, figure 1A block diagram of a hardware structure of a computer terminal according to a method for detecting tampered audio according to an embodiment of the present disclosure is schematically shown. Such as figure 1 As shown, the...
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The present disclosure relates to a method, device, electronic device and storage medium for detecting tampered audio. The method includes: acquiring a signal to be detected, and performing wavelet transformation of a first preset order on the signal to be detected, and obtaining a number equal to the first preset The first low-frequency coefficient and the first high-frequency coefficient corresponding to the order of the signal to be detected; performing wavelet inverse transform on the first high-frequency coefficient whose order is greater than or equal to the second preset order to obtain the first high-frequency coefficient corresponding to the signal to be detected frequency component signal; calculate the first Mel cepstrum feature of the first high frequency component signal in units of frames, and combine the current frame signal of the first high frequency component signal and the first frame signal of the preset number of frame signals before the current frame signal A Mel cepstrum feature is fused to obtain the first fused feature; the audio tampering detection is performed on the first fused feature through the deep learning model.
Description
technical field [0001] The present disclosure relates to the field of speech recognition, and in particular to a method, device, electronic equipment and storage medium for detecting tampered audio. Background technique [0002] The main principle of detecting tampered audio is that the audio file will record the inherent characteristics of the recording device (such as the background noise of the microphone) or the inherent information of the audio processing (compression, denoising) software during the recording process. Information does not change over time, statistics are stable. At present, commonly used schemes for detecting tampered audio include tampering forensics based on the difference in energy distribution of background noise, tampering forensics based on environmental reverberation recording environment recognition, etc. These methods are only effective for files in a certain compression format, and cannot be extended to all audio formats. Another way of thin...
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IPC IPC(8): G10L25/24G10L25/18G10L25/51
CPCG10L25/24G10L25/18G10L25/51G10L25/30
Inventor 梁山陶建华聂帅易江燕
Owner INST OF AUTOMATION CHINESE ACAD OF SCI