AWT1 1.3.0 – major technology update

AWT1 1.3.0 – major technology update

  • (decoder) drastically faster sync stage and immediate ‘no watermark’ detection in case of analysis of acoustically different files
  • (decoder) new ‘-fast_sync’ switch, leading to twice faster synchronization (safe to use!)
  • (decoder) changed math for even faster overall decoding operation
  • (decoder) code optimization and speed-up in watermark extraction
  • (decoder) Improved non-standard waves handling
  • ARM Linux binaries are now available

Refer to the full changes log.

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AWT2 0.11.06 – major technology update

Major update of AWT2 technology – version 0.11.06 is now available

  • (decoder) significant algorithmic speed-up in time-stretch analysis, much faster operation
  • ARM Linux binaries are available

Refer to the full changes log.

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AWT2 0.11.05 – major technology update

Major update of AWT2 technology – 0.11.05

  • now the CLI encoder tool uses only a fraction of RAM it required earlier. The encoding is now done buffer-by-buffer, and the tool does not load the entire audio file into memory.
  • added support for a “compound payload”, i.e. a sequence of different payloads that are to be embedded at different time-locations within the audio stream. Each payload must be accompanied with the time where the payload should start. Such sequence must be of the following form: time_sec:hex_payload;time_sec:hex_payload;… No spaces are allowed in the compound payload, the semicolon “;” is used as a delimiter. The ‘time_sec’ can be a positive offset (in seconds) relative to the start of the file, or a negative offset relative to the end of file. You can use ‘void’ payload to designate bypass (no watermarking).
  • the decoder now consumes significantly less RAM in sliced analysis operation; can now process even shorter audios
  • improved non-standard WAV files support
  • various bugfixes


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Interview with TrustedAudio at NoizeField

Talk-Zone #45 Interview with TrustedAudio

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Collaboration announcement with Coval

Announcing collaboration with Coval:

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AWT3 new release

AWT3, over-the-air signalling and triggering technology, has been updated. The new release features improved, more light-weight decoder function with signal time/speed-variation support.

For more details, please contact AWT3 developer.

Posted in Releases | Leave a comment – watermarked audio delivery

I’m glad to announce that opens its doors for beta-testing.

TrustedAudio (TA) is a professional web-based tool that provides an easy and reliable way to share, deliver, and distribute audio files securely by means of watermarking and digital signing.

At this stage, public registration is closed, but you can ask for invite by leaving your request via the Contacts form on the TA website or just sending mail with request to mailbox /at/ trustedaudio /dot/ com.

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VRT licenses AWT technology

VRT (, The Flemish Radio and Television Broadcasting Organization of Belgium, licenses AWT technology to incorporate it within its broadcast monitoring system.

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AWT2 0.11.0 and AWT1 1.2.7 have been released

AWT2 0.11.0 is a major technology update.

– (decoder) redesigned and rewritten watermark detection engine; watermark search in non-watermarked audio is now 7-10 times faster, without compromising the reliability of watermark extraction.
– (decoder, CLI) -stop_on_found command line parameter has been modified, it now allows specifying -stop_on_found=N to stop after N slices with found watermarks.
– (decoder) -fast_scan mode is now more reliable
– various speed improvements and optimizations

AWT1 1.2.7 features several bug-fixes.


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Inflyteapp, CBT Nuggets license AWT technology

Inflyteapp ( a mobile music promo platform, and CBT Nuggets (, a leading  video training provider, license AWT audio watermarking technology of for using in their digital content delivery platforms.

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