azimuth

Obsolete
This feature is obsolete. Although it may still work in some browsers, its use is discouraged since it could be removed at any time. Try to avoid using it.

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Summary

In combination with elevation, azimuth enables different audio sources to be positioned spatially for aural presentation. This is important in that it provides a natural way to tell several voices apart, as each can be positioned to originate at a different location on the sound stage. Stereo output produce a lateral sound stage, while binaural headphones and multi-speaker setups allow for a fully three-dimensional stage.

Initial value	`center`
Applies to	all elements
Inherited	yes
Media	aural
Computed value	normalized angle
Animation type	discrete
Canonical order	order of appearance in the formal grammar of the values

Syntax

<angle> | [ [ left-side | far-left | left | center-left | center | center-right | right | far-right | right-side ] || behind ] | leftwards | rightwards

Values

angle: Audible source position is described as an angle within the range -360deg to 360deg. The value 0deg means directly ahead in the center of the sound stage (this is the default value). 90deg is to the right, 180deg is behind, and 270deg or -90deg is to the left.

Image:Azimuth.png

Positional keywords

left-side: Same as 270deg.
left-side behind: Same as 270deg.
far-left: Same as 300deg.
far-left behind: Same as 240deg.
left: Same as 320deg.
left behind: Same as 220deg.
center-left: Same as 340deg.
center-left behind: Same as 200deg.
center: Same as 0deg.
center behind: Same as 180deg.
center-right: Same as 20deg.
center-right behind: Same as 160deg.
right: Same as 40deg.
right behind: Same as 140deg.
far-right: Same as 60deg.
far-right behind: Same as 120deg.
right-side: Same as 90deg.
right-side behind: Same as 90deg.
behind: Same as 180deg. Also used as a modifier for other positional keyword values, as above.
leftwards: Moves the sound counter-clockwise by 20 degrees, relative to the current angle.
rightwards: Moves the sound clockwise by 20 degrees, relative to the current angle.

Examples

h1   { azimuth: 30deg }
td.a { azimuth: far-right }          /*  60deg */
#12  { azimuth: behind far-right }   /* 120deg */
p.comment { azimuth: behind }        /* 180deg */

Specifications

Specification	Status	Comment
CSS Level 2 (Revision 1) The definition of 'azimuth' in that specification.	Recommendation	Initial definition

Feature	Chrome	Firefox (Gecko)	Internet Explorer	Opera	Safari
Basic support	?	No support [1]	?	?	?

Feature	Android	Firefox Mobile (Gecko)	IE Mobile	Opera Mobile	Safari Mobile
Basic support	?	No support [1]	?	?	?

[1] Although the aural media group was recognized in Gecko prior to Gecko 6.0 (Firefox 6.0 / Thunderbird 6.0 / SeaMonkey 2.3), it was not implemented. What little code there was to attempt to process it was removed in Gecko 6.0.