ENF (Electric Network Frequency) Extraction

ENF (Electric Network Frequency) Extraction is a technology that involves extracting the frequency of the electric grid from raw voltage signals or audio/video files. The goal of this task is to accurately obtain the fluctuation characteristics of the grid frequency, providing crucial data support for applications such as timestamp verification, authentication of recordings, and power system monitoring. As an important branch of Time Series analysis, ENF Extraction plays a significant role in ensuring data security and reliability.