We have an elaborate track record when it comes to speech intelligibility: from developing test methods tot building test equipment to conducting large-scale surveys. Our team has been a driving force behind the development of the Speech Transmission Index for more than 25 years, and comprises the original inventors of STIPA and of most advanced STI-model features introduced since rev.2 of the iEC-standard for the STI (IEC-60268-16).

We have licensed our test signals and algorithms to various manufacturers of test equipment and PA/VA systems. The Speech Transmission Index method is fully described in standards and scientific papers, and as such part of the public domain. However, test signals are copyrighted and need to be developed by anybody who wants to commercially release new STI implementations. To implement the STI model efficiently, proprietary processing algorithms are developed by each manufacturer. A significant reduction in development time and cost can be achieved by licensing algorithms and signals from Embedded Acoustics. Embedded Acoustics is currently the only company that has developed IP for implementing Full STI measurements through the direct method. 

Next to solutions for measuring intelligibility, we also have algorithms and embedded implementations for optimizing intelligibility. This includes software for determining the optimal channel characteristics as well as signal processing solutions to enhance intelligibility.