Retrieved 2009-09-01. ↑ "Sample Xiph.Org Variant of the BSD License". Xiph.Org Foundation. Retrieved 2009-08-29. ↑ Xiph.Org Speex: A Free Codec For Free Speech, Retrieved 2009-09-01 1 2 Xiph.Org Introduction to CELP Coding, Retrieved 2009-09-01 ↑ Adobe FLV format specification, retrieved 2016-04-18 ↑ Xiph.org Speex releases - pre-1.0 - NEWS and ChangeLog in speex-0.0.1.tar.gz, Retrieved 2009-09-01 ↑ Xiph.Org Speex FAQ – Under what license is Speex released?, Retrieved 2009-09-01 ↑ Xiph.Org (2003-03-24) Speex reaches 1.0; Xiph.Org now a 501(c)(3) Non-Profit Organization, Retrieved 2009-09-01 ↑ Speex homepage, retrieved 2017-04-11 ↑ Codec Description ↑ Spot me if you can: Uncovering Spoken Phrases in Encrypted VoIP Conversations (Charles V. Wright Lucas Ballard Scott E. Coull Fabian Monrose Gerald M. Masson) ↑ As announced by Ralph Giles, the Theora codec maintainer, on LugRadio episode 29 ↑ "A free codec for free speech".