User guide

IR Type: Tail – Synthetic Noise Tail Generator Algorithm Control
Late reflections, also known as tails, provide much of the fullness and richness of longer
environments and the sense of space within smaller rooms. As tens of thousands of reflections from
multiple walls begin to merge into a cohesive sea of reverb the sonic characteristics of the tails tend
towards a dense spectrally shaped sound, similar in character to filtered noise.
Reverberate’s tails generator takes advantage of this phenomenon by providing a seeded random
noise generation algorithm capable of diffusion to mimic the gradual progression from defined
reflections to dense reverb tails. It is possible to create early reflections, late reflections or complete
reverb IRs using this generator. Once an IR has been designed the standard shaping and filtering
tools can be used to further refine the sound. Synthetic tails typically require filtering in order to
provide a natural sound which can be provided based on a number of room models using the tint
control or using the IRxEQ tab. The following parameters are available:
• Decay: Provides a base length for the seeded noise generation algorithm.
• Room Tint Model: Applies a base room equalisation (or white, for unfiltered synthetic noise).
• Diffusion: Mimics the diffusion effect of real rooms.
• Converge: Controls the speed at which the reflections diffuse and converge into a dense tail
from individually identifiable reflections.
• Variant: Yields different sonic characteristics based on the same decay and diffusion
parameters by manipulating the starting value (seed) of the algorithm.
• Diffusion Model: Affects the density and timing of diffusion.