This is a homepage of Audio Watermarking Tools (AWT) — robust sound watermarking and steganography software solutions based on a proprietary patented* technology. The tools come in form of file-to-file console (CLI) applications with intuitive GUI front-end. The tools are cross-platform, easy to use on workstations and are quickly deployable in server environments. AWT are free to try.
 Digital audio watermarking allows to imperceptibly embed (hide) digital signature (digital code) into audio content (wave file) so that this information cannot be removed without damaging the original audio quality. The embedded inaudible information can be retrieved and used to verify authenticity of the audio content, identity of its owners or recipients, or serve as event trigger.
Three different audio watermarking products are offered:
 (FEATURED!) Audio Watermarking Tools 2 (AWT2) — a watermarking solution realizing so called "blind watermarking" approach in the sense that the watermark can be extracted directly from the watermarked audio recording (the source audio is not needed).
>>> more details, examples, FAQ and free demo...
Audio Watermarking Tools 1 (AWT1) — a watermarking solution realizing so called "strict watermarking" approach in the sense that the source (not watermarked) audio data is required in order to find and decode watermark in the watermarked recording. Watermark extraction is performed by “comparing” source and watermarked streams.
>>> more details, examples, FAQ and free demo ...
(NEW!) Audio Watermarking Tools 3 (AWT3) — an audio trigger codes and watermarking solution especially designed for using in acoustic front-end applications requiring transmission of digital codes over-the-air (e.g. retail stores) and also in so called "second screen" applications. AWT3 is a direct extension of AWT2 and is fully based on its patented technology. Details and demo (including Android app allowing to detect watermarks over-the-air) are available upon request.
>>> more information...
Brief product comparison chart:
| |
AWT1 |
AWT2 |
AWT3 |
| Decoder needs source (not watermarked) audio to find/extract watermark |
Yes |
No |
No |
| Cross-platform software (Windows, Linux, Mac OS) |
Yes |
Yes |
Yes |
| User-friendly GUI for desktop OS |
Yes |
Yes |
No |
| Command line (CLI) tools (for easy automation and scripting on servers) |
Yes |
Yes |
Yes |
| SDK available (Windows, Linux, Mac OS, iOS, Android) |
No |
Yes |
Yes |
| Suitable for "second screen" applications |
No |
Partially |
Yes |
| Detailed documentation |
Yes |
Yes |
Yes |
| Overal watermarks robustness |
Very high |
Very high |
High |
| Watermarks are inaudible (imperceptible) |
Yes |
Yes |
Yes |
| Watermarks survive time-stretching (playback speed variation) |
No |
Yes |
No |
| Watermarks survive lossy transcosing (MP3, Youtube, etc.) |
Yes |
Yes |
Partially |
| Watermarks survive air-transducing |
Yes |
Partially |
Yes |
| Watermark payload length |
Up to 20 bytes** |
Up to 120 bytes** |
Up to 30 bytes** |
| Dual-layer watermarking |
No |
Yes (with AWT2-DL)*** |
Partially |
| Encoding speed |
Very high |
High |
High |
| Suitable for live broadcast monitoring (easy automated watermarks search) |
No |
Yes |
Yes |
| Suitable for audio recording and production studios, labels, etc. |
Yes |
Yes |
No |
| Suitable for audio distribution and sale services, web-stores |
Yes |
Yes |
No |
| Free evaluation package available |
Yes |
Yes |
Yes |
| Android app available |
No |
Yes |
Yes |
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Products:
