The
Amplitude Xtra 2.0 allows Macromedia Director™ movies to respond
in real time to the amplitude data derived from sound cast members.
The xtra sends a continuous stream of 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 basic 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