Fairlight CMI IIx - Page 5 - Harmonic Amplitude Profiles

Page 5 of the Fairlight is (like page 4) about Additive Synthesis.
A Fourier analysis command allows sounds to be converted to harmonics

The above pic shows a loaded voice file. (BALDY1.VC)
This typical page 5 display shows the harmonic overtones as a set of 32 faders.
It's a bit like a graphic equaliser.
The faders are logarithmic (range is 0-255)
First load the voice by typing L,A,name<enter>

To access page 5 type
P5<return>

To access page 5 help type
H5<return>
To step through the help pages use the ADD & SUB buttons on the keyboard

Though both page 4 & 5 deal with additive synthesis and harmonics, they approach it in different ways.
Page 4 can change one harmonic over all waveform segments at once.
Page 5  can change all harmonics over one waveform segment at once.

After loading the voice you can move the faders

Notice how the waveform shape has changed from the original voice file at the very top pic.
This is after typing the command: COMPUTE

My lightpen is misbehaving but I can still get around the page using the arrow keys'

More help screen info:

If you wish to use the keyboard to set the fader type:
n<set>
where n = 0 to 255
The faders are log in function.
The top of the fader = 255
Half way up the fader = 16

You can also use the ADD & SUB keys.
To zero all faders type
Z<return>

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Setting the mode of a voice in Page 5.
This must be done in Page 3

This is a pic of page 3
Usethe arrow key to tab to MODE for the desired voice.
Type: n<set>
n = 1 or 4

Read page 4 for more info about mode 1 vs 4

tHE mode chosen in important.
A Mode 1  sound has 32 sets of faders
A Mode 4 sound will have 128.

The current segment number will be indicated on the display with a small pic of the "wave slice"
in the lower right corner.

Here is what segment 1 looks like.
Use the arrow keys to tab to "current segment" on the screen.
Type n<set>
where n = the segment number you wish to see.

You can quickly jump through segments by using the ADD and SUB keys.

Here is segment 6

Here is segment 32

Each segment is unique.
The synthesized sound changes throughout its duration.

You can compute a different waveform for each segment.
The COMPUTE command mathematically processes these to generate a waveform by additive synthesis.
The page 4 profile graph and page 5 faders are linked.
If you change one, this change will be reflected in the other.

Here is the fader page  of the voice AAATEST.VC

Here is its corresponding page 4

This is what page D looks like for AAATEST.VC

To be continued..............

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