OptimFROG is a proprietary, lossless audio codec developed by Florin Ghido.
OptimFROG is optimized for high compression (small file sizes) at the expense of encoding and decoding speed, and consistently measures among the highest compressing lossless codecs.
[3][4] OptimFROG comes with three compressors: a lossless codec for integer LPCM format in WAV files, one for IEEE 754 floating-point WAV files, and third codec called DualStream.
The lossless decoding is computationally intense and cannot be done in real time on contemporary hardware.
MPEG-4 SLS, and DTS-HD Master Audio also offer correction file generation.