[3] For this project, Liljeryd developed a digital pitch-shifter that transformed the helium-induced high pitched squeaks of the divers back to comprehensible levels so that they are able to communicate better with team members on the surface.
To address this, Liljeryd introduced the compression technology that shrinks files through the elimination of high-pitched components and recreating these from information contained in low frequencies.
[7] Liljeryd was a finalist in the European Inventor Award 2017 for developing a new method of compressing digital audio files called Spectral Band Replication (SBR).
[9] Through Coding Technologies, Liljeryd’s techniques had been adopted by mobile phone operators, XM Satellite Radio Service, and the team behind the Motion Picture Experts Group (MPEG), among others.
[3] In the medical field, Liljeryd was part of the group of inventors who developed the non-linear glucose transform (NLGT), a system that provides accurate representation of glycemic information.