Procedural Animation in Houdini 12

"A Music Installation Art"

Idea

The idea of this short animation is to create a music driven pin-board that has believable movement and realistic rendering.
图片

Lighting Solutions

In order to achieve a believable and natural interior lighting, a portal light geometry is being used as interior fill light (as highlighted on left).
Other area lights were also used as softboxes in close-up shots.
The main light source is Houdini's sky and sun light.
图片

Animation Challenges

Music driven animation will use loudness, pitch or frequency of a given sound file to control the object's parameter, such as height, size or color.
In the CHOP network, a Pitch node is used to separate the pitches according to frequency from 110Hz ~ 660Hz. To present the waveform on the pin-board, a Shift node is added so that at each point it will has a delaying effect.
(above) using Pitch node to separate the animation curve
(above) before and after applying a Shift node to the waveform CHOPs

Inspiration

Installation Arts. Click on image will open the source of these references.