Expertise → Digital Signal Processing
To survive in the digital world, where data is abundant, it is essential to take control of your data. Be it copyright protection or interacting with user actively through your media content, you may need to process and alter digital signals to achieve your goal. Below are a few examples of how audio steganography is used to achieve this.
Digital Watermarking, the process of embedding hidden markers into an audio/video stream to ensure copyright protection, applies a number of anti-piracy coding techniques. Audio steganography enables the ability to determine not only whether a copy was illegally recorded, but also when and where it was recorded, making it easier to investigate piracy incidents.
Another application for audio steganography in the media industry is content synchronization. For instance, by adding time markers to a TV stream DataArt developed an interactive quiz where questions pop up synchronously with specific content regardless at what time the content is being watched.