Patents, white papers and articles related to the audio technologies we offer.


1. Alex Radzishevsky, Transient audio watermarks resistant to reverberation effects, United States Patent No. 11,978,461, May 2024.  

2. Alex Radzishevsky, Acoustic fingerprint extraction and matching, United States Patent No. 10,089,994, October 2018.  

3. Alex Radzishevsky, Watermark embedding and extraction, United States Patent No. 8,116,514, February 2012. 


White papers

1. Alex Radzishevsky, Visual Domain Audio Watermarking (VDAW) and Spectral Barcode Audio Watermarking (SBAW), February 2014. [Read here its web-version with audio examples]  



1. Alex Radzishevsky, Defending the authenticity of sound in the age of AI: How advanced audio watermarking technologies are re-emerging, January 2024