Lexicon PCM 81 - REV 2 - V1-V6 Pitch

3-29
Algorithms and Parameters
PCM 81
Both of these generate out-of-key harmonization:
• Shift Down Take the input pitch assign, round it up a
half-step to an in-key pitch, calculate the
interval pitch then shift the interval pitch
down a half-step.
• Shift Up Take the input pitch assign, round it down a
half-step to an in-key pitch, calculate the
interval pitch then shift the interval pitch up a
half-step.
Unison and Octave interval pitches strictly follow the input pitch
assign. An example of how to use these follows the explanation of
Voice Pitch intervals.
V1-V6 Pitch
The Res2>Plate effect has an individual pitch interval control for
each voice resonator. The range of each control is up or down any
scale interval through five octaves and Unison, for a total of 81
possible settings. For example: an interval of up one-fifth reads
"+5th", and an interval of up one octave and a fifth reads "+1 Oct
+5th". Down one-fifth reads "–5th", down one octave and a fifth
reads "–1 Oct –5th".
An Example Application of Key, Scale, Root, Rule and
Voice Pitch Intervals
• Active resonators set to 3.
• The Key is C.
• The Scale is Major.
• The Root is 1. (C Major Ionian)
• Voice 1 Pitch is assigned to Unison.
• Voice 2 Pitch is assigned to +3rd.
• Voice 3 Pitch is assigned to +5th. (Basic triad)
In-key pitch assignment examples:
1. Pitch Assign:C4. Voice 1 will resonate at C4, Voice 2 at E4, and
Voice 3 at G4. (Standard chord in the key based on the tonic)
2. Pitch Assign: D4. Voice 1 will resonate at D4, Voice 2 at F4, and
Voice 3 at A4. (Standard chord in the key based on the
supertonic)
3. Pitch Assign: E4. Voice 1 will resonate at E4, Voice 2 at G4, and
Voice 3 at B4. (Standard chord in the key based on the
median)
4. Pitch Assign: B4. Voice 1 will resonate at B4, Voice 2 at D5, and
Voice 3 at F5. (Standard chord in the key based on the leading
tone)
Out-of-key pitch assignment — Pitch Assign: C#:Db4. Rule:
• Round Down Voice 1 will resonate at C#/Db4, Voice 2 at E4,
and Voice 3 at G4 diminished
• Round Up Voice 1 will resonate at C#/Db4, Voice 2 at F4,
and Voice 3 at A4 augmented
• Shift Down Voice 1 will resonate at C#/Db4, Voice 2 at E4,
and Voice 3 at G#:Ab4 minor
• Shift Up Voice 1 will resonate at C#/Db4, Voice 2 at F4,
and Voice 3 at G#:Ab4 Major