Audio Echo Filter (PRO only)

The Audio Echo Filter repeats a sound after a given Delay, attenuating the repetitions based on the Decay Ratio.
The Wet Mix determines the amplitude of the filtered signal, where the Dry Mix determines the amplitude of the unfiltered sound output.

The Audio Echo Filter properties in the inspector.

Properties


Delay	Echo delay in ms. 10 to 5000. Default = 500.
Decay Ratio	Echo decay per delay. 0 to 1. 1.0 = No decay, 0.0 = total decay (ie simple 1 line delay). Default = 0.5.L
Wet Mix	Volume of echo signal to pass to output. 0.0 to 1.0. Default = 1.0.
Dry Mix	Volume of original signal to pass to output. 0.0 to 1.0. Default = 1.0.

Adding an Echo filter

To add an Echo filter to a given audio source just select the object in the inspector and then select Component->Audio->Audio Echo Filter.

Hints

Hard surfaces reflects the propagation of sound. E.g. large canyon can be made more convincing with the Audio Echo Filter.
Sound propagates slower than light - we all know that from lightning and thunder. To simulate this, add an Audio Echo Filter to an event sound, set the Wet Mix to 0.0 and modulate the Delay to the distance between AudioSource and AudioListener.

Page last updated: 2010-09-09