Fdsp Synthesis; (Formulated Digital Signal Processing); Fdsp System Overview - Yamaha EX5 Owner's Manual

AN (Poly)+AWM Voices
AN (Layer)+AWM Voices
As shown in the diagrams below, a single AN element can be combined with up to three AWM
elements in AN(Poly)+AWM voices. In the EX5 and EX5R, two AN elements can be combined
with up to two AWM elements in AN(Layer)+AWM Voices. AN + FDSP voices are described in
the FDSP Synthesis section, below.
Elements
AN
1
AWM
2
AWM
3
AWM
4
FDSP Synthesis (Formulated Digital Signal Processing)
FDSP, or "Formulated Digital Sound Processing," is actually an adjunct to AWM synthesis. It adds a
sophisticated note-dependent effect processor to the basic AWM synthesis system. In contrast to a
standard effect stage, the FDSP synthesis stage uses individual note and velocity data to control effect
parameters, thus making it possible to simulate the characterics of a number of real-world musical
components, as well as produce totally new effects. For example, FDSP can effectively model the
frequency and velocity dependent characteristics of electromagnetic guitar or piano pickups, thus
adding more realistic response to these types of voices, or adding a whole new dimension to other
sounds. It can also alter the delay time of flange or chorus type effects according to the note played,
thus producing totally new sounds that are responsive and "alive." Many other effects are possible.

FDSP System Overview

This block diagram is only one example of an FDSP configuration. In this case the FDSP system is
used to model the response of an electric guitar pickup.
Flet
control
Drive
Effects
note dependent note dependent
Input
Delay Delay
picking notch
Picking position Pickup Position
Magnetic Field
Integ Emp
Diff
Distance Pickup type
34
Elements
AN
1
AN
2
AWM
3
AWM
4
pickup
notch
HPF LPF Output
Filter
Cutoff/ bypass
Highpass
Resonance
Effects