AWT2 overview

Audio Watermarking Tools 2 (AWT2) is the flagship forensic watermarking solution in the AWT product family. AWT2 is a set of software utilities for embedding and retrieving digital watermarks carrying arbitrary data in audio files and streams. It uses proprietary patented* technology to embed imperceptible watermarks directly into audio content so they cannot be removed without degrading the original signal. The tools are supplied as console utilities for Microsoft Windows, Apple Mac OS, Linux/*nix Intel, and ARM systems, and AWT2 SDK is available for all major desktop and mobile platforms, including iOS and Android.

AWT2 implements a "blind watermarking" approach, meaning the watermark can be extracted directly from the watermarked recording without access to the original source audio.

AWT2 highlights:

- free evaluation package
- cross-platform software (PC Windows, Linux, Mac OS, ARM, iOS, Android, WebAssembly/WASM...)
- console tools for automation and rapid deployment on servers
- real-time stream encoding and decoding in console/terminal
- detailed documentation with examples and integration guidance
- flexibly configurable algorithm
- industrial-grade watermarking performance providing:
    · truly robust watermarks
    · very high watermarking data rate
- unique, proprietary, patented technology
- dual-layer (dual-stage)  watermarking support
- SDK available
    · cross-platform
    · thread-safe
    · real-time audio stream encoding and decoding functionality


AWT2 performance highlights:

AWT2 watermarks are inaudible and highly robust, surviving multi-pass low-bitrate transcoding, mixing, effect processing, acoustic coupling (transducing via air), and time stretching. AWT2 offers a very high watermarking data rate of up to 125 bps (i.e. up to 16 bytes in one second of audio), with watermark payloads up to 120 bytes long.

AWT2 evaluation package is available upon request.

AWT2 can also be supplied with AWT2 Watermark Listener — an Android application that allows a phone or tablet to detect digital watermarks in audio processed with AWT2 technology.

Check how AWT2 features and functionality compares to other products from the AWT family.



AWT2 applications

AWT2 is a scalable and flexible watermarking solution suited to applications and use cases from the following areas:

  • Digital licensing and digital delivery for audio & music distribution, selling audiobooks, music promo sharing, etc.
  • Audio authenticity and proof of authorship & ownership
  • Protection of sensitive audio recordings (phone calls, clinic visits, etc.)
  • Monitoring of airplay (e.g. commercials, music, etc.)
  • Live broadcast protection
  • Interactive and event-based experiences, signaling and second screen sync over the sound

How to evaluate

Evaluation (demo) version of AWT2 for all major desktop, server and mobile platforms is available upon request.

All packages contain command-line (terminal) encoder and decoder tools, a detailed technology manual, and illustrative examples. If you wish to integrate AWT2 into your software, AWT2 SDK is available for all major desktop, server, and mobile platforms upon request.


Licensing and information inquiries

Please send your inquiries to the following e-mail address:

 

         

Updated: March 28, 2026
latest AWT2 version: 0.15.00

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