The Amplitude Xtra allows Director movies to respond in real time to the amplitude data derived from sound cast members. The xtra sends amplitude values to Director while a sound is playing. This means that, amongst other things, you can,

• control sprite animations and properties by synchronizing them to sound
• draw sound waveforms using normal Director sprites in real time at any resolution
• achieve lip-sync between animated characters and spoken dialogue
• change inks and blend properties in time with sound and music
• change sprite colors based on amplitude intensity

The Amplitude xtra is not intended as a replacement for cue points in Director sound cast members. The information sent to Director from the xtra is continuous rather than point based so animations driven by the Amplitude xtra that reflect the continuously changing nature of sound are extremely effective.

The Amplitude xtra,

• is safe for use with Shockwave
• works with internal sound cast members (including SWA and MP3)
• works with externally linked WAVE, AIFF, SWA and MP3 files
• works with Director 7 and 8
• works with streaming Shockwave audio