Author Archives: Alex Radzishevsky

Major update of AWT2 technology – version 0.12.00 is now available.

• (Encoder) new ‘-quality’ switch and SDK parameter. The parameter is related to an optional mechanism responsible for preservation of the original signal quality. The quality setting can be from 0 to 10. Zero setting switches the mechanism off. Non-zero settings force the encoder to perform additional signal analysis aimed to further improve original audio signal quality in its parts which are “sensitive to manipulations”.
• Raspberry real-time audio watermarking SDK

Audio Watermarking Tools (AWT) of www.audiowatermarking.info are now available  on the Raspberry platform.

Customers can run AWT on this compact and cost-effective ARM-based platform to perform live audio streams watermarking and monitoring. Details and information are available at www.audiowatermarking.info.

 … >>> Click to read the full post...

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.… >>> Click to read the full post...

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.… >>> Click to read the full post...

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

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.… >>> Click to read the full post...

I’m glad to announce that TrustedAudio.com 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.… >>> Click to read the full post...

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.

 … >>> Click to read the full post...