User Manual

reverb that occurs in physical spaces, its warm and dense sound made it the
preference of engineers at both Abbey Road studios and RCA Studio B in
Nashville and was featured on records from Pink Floyd and the Beatles. Today
the EMT 140 remains a mainstay of recording and is still very much in demand.
Modeling the EMT 140
In order to authentically recreate the sound of the EMT 140, iZotope first located
an original unit that was still in good working order (sadly many have fallen into
disrepair). Then by running sine sweeps through the unit at many damping set-
tings we were able to generate impulse responses that accurately captured the
sound of the particular plate. Rather than just use pure convolution, we’ve used
a hybrid DSP algorithm which utilizes both convolution and algorithmic methods
of generating reverb. Convolution is used to accurately generate the early reflec-
tions of the plate while an algorithm has been written to synthetically generate
the late tails of the reverb. Using this sort of hybrid DSP provides continuous
control of parameters like the damping in real-time, which isn’t possible with
pure convolution. Additionally, this hybrid DSP is significantly more CPU effi-
cient than pure convolution.
Controls
Pre-delay (ms)