FOF Tutorial

Sub group 01 holds all of the FOF tutorial instruments. Please
refer to Appendix 4 of the Csound manual for a detailed
discussion of these instruments. (Vercoe 1993b: pp. 114-117)

Please note:
The FOF unit generator has been subject to changes in the last
years. In the FOF group below, we use the currently valid input
parameters, as described in the Csound manual of 1993. Earlier
versions of the Csound manual should not be used aside with
these instruments!

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45_01_1
additional parameters: none


This is the minimum FOF configuration with some ordinary
parameter values

(flowchart)
(.orc and .sco files)

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45_01_2
additional parameters: none

A simple amplitude envelope applied to FOF.


(flowchart)
(.orc and .sco files)


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45_01_3
additional parameters:


This design shows how to add an exaggerated vibrato to the
fundamental frequency.


(flowchart)
(.orc and .sco files)


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45_01_4
additional parameters:


The design on this page shows a transition from granular
texture to timbre, from pulse to pitch. This is achieved by
varying the fundamental frequency from 5 Hz to 200 Hz (see
below). Long duration of 10 sec is required.

(flowchart)
(.orc and .sco files)

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45_01_6B
additional parameters:


Smooth variation of the formant frequency at audio rate. 


(flowchart)
(.orc and .sco files)

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45_01_6C
additional parameters: 


FM modulation of the formant frequency at audio rate.

(flowchart)
(.orc and .sco files)

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45_01_7
additional parameters:


Variation of the rise parameter of the granules.


(flowchart)
(.orc and .sco files)

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45_01_8
additional parameters:

Variation of the middle decay of the granules. The rate of the
build-in exponential decay is controlled by kband. The bigger
kband the steeper the decay; zero means no decay.

(flowchart)
(.orc and .sco files)

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45_01_9
additional parameters:


Variation of the exponential decay of the granules. 


(flowchart)
(.orc and .sco files)

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45_01_10
additional parameters:


Variation of duration and exponential decay of successive
granules.

(flowchart)
(.orc and .sco files)


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45_01_11
additional parameters:


Variation of middle decay and rise of the granules, corre-
sponding to band- and skirtwidth in the spectral domain.

(flowchart)
(.orc and .sco files)

