[X3D-Public] potential free audio formats for X3D - ogg and flac

[Don Brutzman]

Of broad interest:  Wikipedia is now support the .ogg vorbis audio format.

	http://en.wikipedia.org/wiki/List_of_national_anthems

	http://en.wikipedia.org/wiki/Ogg#File_format

Of further interest:  FLAC (Free Lossless Audio Codec)

	http://en.wikipedia.org/wiki/Flac

Broad question:  shall we add .ogg vorbis and FLAC to the list of 
_required_ audio formats for X3D?

	16.4.1 AudioClip
	http://www.web3d.org/files/specifications/19775-1/V3.3/Part01/components/sound.html#AudioClip

> Browsers shall support at least the wavefile format in uncompressed PCM format (see [WAV]). It is recommended that browsers also support the MIDI file type 1 sound format (see 2.[MIDI]) and the MP3 compressed format (see 2.[I11172-1]). MIDI files are presumed to use the General MIDI patch set. 9.2.1 URLs contains details on the url field.

X3D working group:  we should also consider improving the aural 
spatialization model in next year's X3D v3.4.

	16.4.2 Sound
	http://www.web3d.org/files/specifications/19775-1/V3.3/Part01/components/sound.html#Sound


all the best, Don
-- 
Don Brutzman  Naval Postgraduate School, Code USW/Br       brutzman at nps.edu
Watkins 270,  MOVES Institute, Monterey CA 93943-5000 USA   +1.831.656.2149
X3D graphics, virtual worlds, navy robotics http://faculty.nps.edu/brutzman