RA:(由Real Player支持的高压缩比声音文件,广泛用于网络实时传播) Speex:(Ogg project, specialized for voice, low bitrates) Vorbis:(Ogg project, free and similar in principle to MP3)
1998(页面存档备份,存于互联网档案馆) (Windows Media, Ogg Theora and Ogg Vorbis formats) The Center for the Advancement of Capitalism 文章 Andrew Chin, Decoding Microsoft: A First