9.5.2

1000 • CHAPTER 19
TIMELINE • 1001
Key Properties
Name
You can enter a new name for the key into this box.
Time
Denes the frame at which the key is placed. To move the key to a different frame, set this parameter
to the desired frame number.
Volume
Controls the volume of the sound le. Set a value from 0% (no sound) to 100% (full volume).
Balance
This parameter is ignored for 3D sound rendering, since then the balance information comes from the
3D sound parameters, distances and movements.
Denes the stereo balance of the sound le. You can set values from -100% to 100%, where negative
values shift the volume to the left channel and positive values shift the volume to the right channel.
At the default value of 0%, the volume is shared equally by the left and right channels.
New Track > Time
The Time track gives you a quick and easy way to control the timing of any animation track using
a curve known as a time curve. For example, suppose you’ve created a track that moves a car from
the start to end of a road at constant velocity. When you play back this animation, the car starts
abruptly, as though it goes from 0-100 in zero seconds. Naturally, this is unrealistic. We need the car
to accelerate gradually over a number of frames.
Although we could record multiple keys to speed up the car at the start and slow it down at the end,
the Time track lets us do this more quickly, more exibly and more accurately by drawing a curve. Not
only can we speed up and slow down the car, we can also, say, make the car stop halfway along the
road, reverse a bit, go forwards once more.