Audio Watermarking

An audio watermark is a special "code" or information embedded within the audio signal that is "transparent" (not perceptible by the final listener) and very strong to survive transmission or attacks on analog/digital channels or lossy compression (such as MP3, AAC, etc).
This ancillary data channel can carry any type of information, such as copyright, images, lyrics, etc.

Base 10 Labs' watermarking technology makes use of spread spectrum theory to create a robust watermark signal, and a psychoacoustic model of the human hearing to embed this watermark in the audio stream, making it imperceptible to the average listener.

Psychoacoustic Masking Curves

Watermark Noise Shaping

Watermark Injection

Watermark Decoder Diagram