Watermarking Audio

Watermarking involves embedding a hidden signal into the audio that survives compression and transmission but can be decoded to verify authenticity or origin.

Techniques

• Spread Spectrum: Hiding the watermark signal across a wide frequency band.
• Echo Hiding: Introducing imperceptible echoes to encode data.
• Deep Watermarking: Using neural networks to encode and decode watermarks robustly.

Application in Generative AI

If all generative models were required to embed a watermark, we could easily identify synthetic content. Initiatives like C2PA are working towards standards for content provenance.