Space Designer volume envelope in Logic Pro for iPad
The volume envelope is used to set the reverb initial level and to control volume changes over time.
Volume envelope parameters
Volume Envelope On/Off button: Turn on or turn off the volume envelope.
Init Level knob and field: Set the initial volume level of the impulse response attack phase. It is expressed as a percentage of the full-scale volume of the impulse response file. The attack phase is generally the loudest point of the impulse response. Set Init Level to 100% to ensure maximum volume for early reflections.
Attack Time knob and field: Determine the time before the decay phase of the volume envelope begins.
Decay Time knob and field: Set the length of the decay phase.
Note: The overall decay is determined by the global Length and Size parameter values. To explain, a maximum Length value and a Size value of 100% result in a decay that is the full length of the loaded impulse response.
End Level knob and field: Set the end volume level. It is expressed as a percentage of the overall volume envelope.
If set to 0%, the reverb tail fades out completely towards the end of the Decay time.
If set to a higher value, the reverb tail will not have faded out completely at the end of the Decay time, which stops the reverb abruptly at that point. If the end time falls outside the reverb tail, End Level has no effect.
Volume Decay Mode buttons: Choose a mode that determines how the reverb tail is handled.
Linear button: The decay curve of the volume envelope is shaped by a linear algorithm, and results in a less natural-sounding reverb tail.
Exp button: The decay curve of the volume envelope is shaped by an exponential algorithm, in order to generate the most natural-sounding reverb tail.
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