The size over time is animated by the curve you see in the effects control panel. The sets of 3 keyframes go from zero and 1000 and then back to zero.

Something like this would get you started on seeing how animating the number of particles per second makes them behave. Just poking around with some values and some properties and running previews is pretty much a waste of time. Start by playing with the controls and some keyframes to figure out what approach you want to take before you try and use Sound Keys to control the animation. Once a particle is emitted and started down it's path you can only influence that path, the size and the color of the particle over its lifetime. You can animate gravity, wind, but you cannot increase the number of particles after they have left the emitter. Once the particle has been emitted it is moving with a certain speed. There is an emitter which has a defined size and position, there is the particle, and then there is particle velocity. Want to master Microsoft Excel and take your work-from-home job prospects to the next level? Jump-start your career with our Premium A-to-Z Microsoft Excel Training Bundle from the new Gadget Hacks Shop and get lifetime access to more than 40 hours of Basic to Advanced instruction on functions, formula, tools, and more.You have to start by understanding how particle systems work. Use Trapcode Sound Keys After Effects pluginĬlick through to watch this video on TrapCode Sound Keys After Effects plugin is great for audio-intensive animations. Learn how to visually select parts of an audio track and convert that audio into keyframes. Sound Keys is a keyframe generator plug-in for Adobe After Effects.

Trapcode sound keys