- Ionstorm for creating the enjoyable game "Deus Ex - Invisible War". And, of course all their other games, including Daikatana :).
- the Deus Ex 2 community for their enthusiasm and efforts made for this game.
- The Xiph.org Foundation for their free multimedia standards (Ogg Vorbis) at www.xiph.org.
- Microsoft/IBM for the RIFF Wave file format.
- Microsoft/Intel/IMA for the DVI/IMA ADPCM algorithms.
- The University of North Carolina for providing a lecture on IMA ADPCM at http://www.cs.unc.edu/Courses/comp249-s03/lectures/comp249_s03_5/sld013.htm.
- The SoX SOund Exchange open source project at http://sox.sourceforge.net/ for providing a good implementation of IMA ADPCM as a reference.
- The "Connected: An Internet Encyclopedia" at http://www.freesoft.org/CIE/index.htm for providing some insight in the DVI4 ADPCM algorithm described in RFC 1890.