Advanced Digital Audio (ADA) has been developed by the German programmer Heiko Volk. Besides a (not very efficient) lossless compression mode, it offers a lossy mode, that is probably just using quantization (like WavPack lossy and OptimFrog Dual Stream).

The official home page is still available here - hoho. It's gone.


Date: 1999
Version: 1.0
Interface: Command Line
Platform: DOS
Download: ada.zip - 23Kb