APT Ltd is a pioneering designer of audio codecs for broadcast professionals and telecommunications companies worldwide.  The company's WorldNet and WorldCast codecs offer reliable and cost-effective broadcast solutions delivering high quality audio over IP, T1, E1, ISDN & Leased Lines. 

Designed for use in studio transmitter links, studio networking and remotes / OB applications, the APT codec portfolio includes a wide range of stereo and multi-channel units that can be deployed as a simple STL or a large-scale IP audio network. 

APT codecs have been selected by many leading broadcasters worldwide. Noteworthy examples include the BBC,  ARD and the European Broadcast Union in Europe; NRK Japan, Korean Telecom and Australia Broadcasting Corporation in Asia and National Public Radio, Clear Channel Radio, Sirius Satellite Radio and CBC Canada throughout North America.

Operating in the fast-moving broadcast technology market, APT acknowledge the importance of significant investment in R&D to ensure our product offering meets the needs of rapidly changing market conditions. Many countries worldwide are upgrading their infrastructure in line with the three current trends: Digital / HD Radio, Audio over Internet Protocol and Surround Sound for Radio and APT has solutions for each of these areas. Thanks to this focus on innovation, our products have been selected as winners of prestigious industry awards by Radio World and Radio Magazine.

APT offers both depth and breadth of experience to its customers within the broadcast industry. Throughout its 20 year history, the company has worked with major public and commercial broadcasters on many pioneering audio transport projects and is focused on providing practical and reliable solutions to the challenges of modern broadcasting.