AWT1 overview

Audio Watermarking Tools 1 (AWT1) is a set of software utilities for embedding (and retrieving) digital watermarks within (from) audio files. AWT1 uses proprietary patented* technology to imperceptibly embed watermarks directly into the audio content so that they cannot be removed without damaging the original audio quality. The tools are distributed as a package of GUI and console/command-line utilities running on Microsoft Windows 7/Vista/XP/NT/2000/Server, Apple Mac OS X and Linux/*nix Intel and ARM systems.

AWT1 implements so called "strict watermarking" approach in the sense that the source (not watermarked) audio file is required in order to detect and decode watermark in the watermarked recording. Watermark extraction is performed by “comparing” the source and the watermarked streams.

AWT1 highlights:

- cross-platform software (PC Windows, Linux, Mac OS, ARM...)
- console tools for easy automation and quick deployment on servers
- intuitive GUI front-end with drag-and-drop support
- detailed documentation with examples and tips
- configurable algorithm
- industrial grade watermarking performance featuring:
    · extremely resistant, robust watermarks
    · high watermarking data rate
- SDK available
    · cross-platform
    · fully thread-safe
    · with true real-time audio stream encoding functionality
- patented technology

AWT1 performance highlights:

AWT1 watermarks are inaudible and highly robust, surviving low bitrate transcoding with lossy coders, mixing, effect processing and acoustic coupling (transducing via air).
AWT1 offers unprecedentedly high watermarking data rate up to 30 bps (resulting in up to 20 bytes watermark payload length).

AWT1 brings reliable watermarking to your business. AWT1 protects your rights by ensuring that your watermark is detectable (only by you!) in any copy of your audio materials transmitted or broadcasted anywhere.

AWT1 evaluation package is available upon request.

Check how AWT1 features and functionality compare to other products from the AWT family.

AWT1 applications

AWT1 is a universal, scalable and flexible data-hiding solution addressing different application 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.)

How to evaluate

Evaluation (demo) version of AWT1 for all major desktop, server and mobile platforms is available upon request.

All packages contain command line (terminal) encoder, decoder, detailed technology manual and illustrative examples. If you wish to integrate AWT1 into your software, you can use AWT1 SDK, which 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: September 14, 2018
latest AWT1 version: 2.0.0