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Sounds

VRML, like most other forms of interactive 3D, is capable of introducing sound into otherwise silent worlds. To do so, you must combine a sound emitter with a sound source. A VRML sound emitter is analogous to a real-world stereo speaker, as it is the element in a scene that actually outputs (plays) sound. A sound source, on the other hand, is a file that contains the audio signals that the emitter plays.

VRML's Sound node specifies a sound emitter that can be combined with a sound source created by either the AudioClip node or the MovieTexture node. The Sound node is combined with an AudioClip node to produce sounds from waveform (WAV) or Musical Instrument Digital Interface (MIDI) files. To create sounds from an MPEG-1 Systems movie (MPEG movie), however, the Sound node is combined with a MovieTexture node.


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