Kurzweil K2600 - Block Diagram of Triggered Envelope Filter

KDFX Reference
KDFX Algorithm Specifications
10-115
Figure 10-52 Block diagram of Triggered Envelope Filter
The time constant of the envelope follower may be set (Env Rate) as well as the decay rate of the generated
envelope (Rel Rate). After the detected envelope rises above the Trigger level, a trigger event cannot occur
again until the signal drops below the Retrigger level. In general, Retrigger should be set lower than the
Trigger level. A level meter with a trigger marker is provided.
Parameters
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Wet/Dry The amount of modulated (wet) signal relative to unaffected (dry) signal as a percent.
Out Gain The overall gain or amplitude at the output of the effect.
FilterType The type of resonant Þlter to be used. May be one of ÒLowpassÓ, ÒHighpassÓ, ÒBandpassÓ,
or ÒNotchÓ.
Min Freq The base frequency of the resonant Þlter. The Þlter resonant frequency is set to the base
frequency while the signal envelope is below the threshiold.
Max Freq The frequency of the resonant Þlter that can be reached when the envelope follower
output reaches full-scale. The resonant frequency will sweep with the envelope from the
base frequency, approaching the limit frequency with rising amplitudes.
Resonance The resonance level of the resonant Þlter. Resonance sets the level of the resonant peak (or
the amount of cut in the case of the notch Þlter).
Trigger The threshold at which the envelope detector triggers in fractions of full scale where 0dB
is full scale.
Wet/Dry 0 to 100%wet Out Gain Off, -79.0 to 24.0 dB
FilterType Lowpass Min Freq 58 to 8372 Hz
F Max Freq 58 to 8372 Hz
0Hz 2k 4k 6k Resonance 0 to 50 dB
Trigger -79.0 to 0.0 dB Env Rate 0.0 to 300.0 dB/s
Retrigger -79.0 to 0.0 dB Rel Rate 0.0 to 300.0 dB/s
Smth Rate 0.0 to 300.0 dB/s
Resonant Filter
Envelope
Follower
Trigger
Generator
Triggered
Envelope
Generator
L Input
R Input
L Input
R Input