10.6

344Logic Pro Instruments
• Decay handle and field: Drag horizontally to set the time it takes for the envelope to
fall to the sustain level, following the hold phase or the initial attack time. Drag the
field vertically.
• Sustain handle and field: Drag vertically to set the sustain level, which is held until
you release the key. Drag the field vertically.
• Release handle and field: Drag horizontally to set the time it takes for the envelope
to fall from the sustain level to a level of zero. Drag the field vertically.
• Vel slider: Set the intensity of pitch envelope modulation in response to incoming
velocity data.
• If the Vel slider is set to zero, the envelope outputs its maximum level when you
strike the keys at any velocity.
• At a Vel slider value of 100%, the entire dynamic range is under velocity control.
To explain, raising the slider value reduces the envelope minimum amplitude, with
the difference being dynamically controlled by keyboard velocity. For example, when
you set the Vel slider to 25%, the minimum envelope amplitude is reduced to 75%.
The remaining 25% is added in response to the velocities of keys you play. A key
played with a zero velocity results in an envelope amplitude of 75%. A key played
with a MIDI velocity value of 127 will result in an envelope amplitude of 100%. When
you raise the Vel slider value, the minimum amplitude decreases even further.
Logic Pro Quick Sampler Filter controls
Quick Sampler provides an extensive range of filter types, including lowpass, highpass,
bandpass, and band reject filters.
You can control the filter section over time with a dedicated multimode envelope.
Parameters that are modulation targets are indicated by a white dot when a note is played.
The modulation range is shown as an orange ring around target parameters.
If you’re new to synthesizers and the concepts behind components such as filters, LFOs,
and envelopes, see Synthesizer basics overview.