Akai MPC X User Manual page 198

Use the Pad Polyphony field to determine how the pad's sound behaves when multiple hits are registered. When set
to Mono, only one pad will sound at a time. If a pad is played while another (or the same one) is still playing its
sample/samples, the new pad will immediately mute all other currently playing pads in that program. When set to
Poly, several pads can be triggered at the same time (limited only by the total number of voices available). You can
also select a specific number of pads (2–32) so that you can trigger up to this many pads at the same time (unless
they exceed the total number of voices available).
The Velocity Sensitivity controls determine how much the velocity affects the pitch of the sound (Pitch), the attack
of the filter envelope (Attack), the volume level of the filter envelope (Amp) and or the panning of the sound (Pan).
When you press a pad softly, only minimal modulation is applied. When you press it harder, the modulation amount
also gets stronger depending on the setting of the corresponding knob.
A low-frequency oscillator (LFO) generates a periodic waveform with an adjustable frequency and shape which can
be used for modulation purposes.
Use the Wave field to select the LFO waveform type:
Sine (best suited for smooth modulations)
Triangle (best suited for smooth modulations)
S&H (samples a random value and holds it until the next value is generated)
Saw (can generate interesting filter or volume changes)
Saw Down (can generate interesting filter or volume changes)
Square (interesting results with hard-panning modulations)
Noise (generates random values and glides)
Use the Rate field to determine the LFO frequency. At lower values, it might take some time for the LFO to complete
a cycle, while higher values will come closer to audible range.
Use the Sync field to set if the LFO's rate is synchronized with the tempo. You can select one of several time
divisions (a . indicates a dotted note; a T indicates a triplet-based time division). When None is selected, Sync is off.
Use the Destinations sliders to determine how much the LFO affects the pitch of the sound (Pitch), the cutoff
frequency of the filter (Filter), the volume level of the sound (Amp) and panning of the sound (Pan).
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