<table border="0" width="100%"> <tbody> <tr> <td align="center" rowspan="2"> <a href="index.html"><img border="0" alt="Figure 24.1 Emitter Markers" title="Figure 24.1 Emitter Markers" hspace="10" src="_viewpoints/Figure24_1EmitterMarkers.x3d._VP_9m_distance,_range_circles_at_5m_and_10m.png" width="156" height="89" align="middle"/></a> </td> <td align="left"> <p> The Sound node controls the stereo 3D spatialization of sound playback by a child AudioClip or MovieTexture node. </p> <p> Sounds can be triggered by viewer actions: clicks, horn honks, door latch noises, etc. Sounds can also be continuous in the background: wind, crowd noises, elevator music. Sounds emit from a location, in a direction, and within an ellipsoidal volume. A Sound node describes a sound emitter, where a source node provides the sound and range fields describe the sound region. An AudioClip node or a MovieTexture node describe a sound source, where a url points to the sound file. AudioClip also controls playback by start time, stop time, and (optionally) looping. </p> <p> These X3D scenes are adapted directly from the <a href="http://www.wiley.com/legacy/compbooks/vrml2sbk/toc/ch24.htm" target="_Vrml2Sourcebook">original VRML 2.0 Sourcebook chapter examples</a>. Also available: <a href="http://www.sdsc.edu/~moreland/courses/Siggraph98/vrml97/slides/mt0333.htm" target="_Vrml2SourcebookCourse">Introduction to VRML97 SIGGRAPH98 course notes</a>. </p> </td> </tr> </tbody> </table>