Doppler Shift is available in the Creator tier and Pro tier.
When combined with an animated layer, this effect introduces realistic Doppler Shift to an audio layer.
The effect should be added directly to your audio layer. In the effect’s properties you can link it to a separate layer, which can then be animated. For example, if a point layer is created and animated to move towards camera, the audio will receive a Doppler Shift as if the sound is approaching camera.
A practical example would be to use a constant audio recording of a helicopter, which is then linked via the Doppler Shift effect to an animated 3D helicopter in your scene. The helicopter audio will be shifted automatically as the vehicle moves.
- Sound Position: Use this menu to select any layer on your timeline. The selected layer’s position will be used to calculate the Doppler Shift.
- Speed of Sound: Defined in meters per second. Works in conjunction with the Scene Size, which defines how many pixels are equal to a meter within your specific scene.
- Scene Size: Defines how many pixels in the scene correspond to a real meter. This makes it possible to get accurate Doppler Shifting for a variety of scene setups.
- Distance Falloff: When activated, the audio will diminish in volume the farther away it is from the position set in the Volume Distance.
- Volume Distance: The distance from the camera at which audio will be at 100% volume. As audio gets farther away it will become quieter. If the audio moves closer to the camera than the chosen value, it will become louder than 100%.