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: Enable or disable 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 Length value of 100% 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%, you can fade out the reverb tail.
- If set to 100%, you can’t fade out the tail, and the reverb stops abruptly if the end point falls within the tail. 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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Logic Pro User Guide for iPad

Space Designer volume envelope in Logic Pro for iPad

Volume envelope parameters