The Kyma Language for Sound Design, Version 4.5

GAOscillators
Xtra Sources Category
Additive synthesis using oscillators with complex waveforms (rather than sine waves). Each oscillator
has its own amplitude envelope and all oscillators share the same frequency deviation envelope.
TimeIndex
This controls the position within the frequency and amplitude envelopes, where -1 points to the beginning
of the envelopes, 0 points to the middle, and 1 points to the end of the envelopes. To move linearly from
the beginning to the end of the envelopes, use a FunctionGenerator whose wavetable is a FullRamp, or
use the EventValue fullRamp generator. For example,
!KeyDown fullRamp: 3 s
would go from -1 up to 1 whenever a MIDI key goes down.
Analysis0
This is the GA analysis file used when Morph is set to 0. A GA analysis file is an AIFF file containing
each of the wavetables, followed by each of the amplitude envelopes, followed by the frequency deviation
envelope. Each of the waveforms is 4096 samples long, and each of the amplitude envelopes and the
frequency envelope is the same length as each other (but this length varies from analysis to analysis).
To create your own analysis file from a sample, first do a spectral analysis of the sample, and then
generate a GA analysis file from that. Both of these operations can be performed using tools found in the
Tools menu. (See the tutorial on GA analysis/synthesis for full details).
Analysis1
This is the GA analysis file used when Morph is set to 1. A GA analysis file is an AIFF file containing
each of the wavetables, followed by each of the amplitude envelopes, followed by the frequency deviation
envelope. Each of the waveforms is 4096 samples long, and each of the amplitude envelopes and the
frequency envelope is the same length as each other (but this length varies from analysis to analysis).
To create your own analysis file from a sample, first do a spectral analysis of the sample, and then
generate a GA analysis file from that. Both of these operations can be performed using tools found in the
Tools menu. (See the tutorial on GA analysis/synthesis for full details).
Envelope
This is an overall envelope on all of the enveloped oscillators.
Frequency
The frequency can be specified in units of pitch or frequency. The following are all ways to specify the A
above middle C:
440 hz (in hertz or cycles per second)
4 a (as the 4th octave A)
69 nn (as a MIDI notenumber)
4 c + 9 nn (as 9 half steps above middle C)
1.0 / 0.00227273 s (inverse of a period at 44.1 kHz sample rate)
The following are examples of how to control the frequency using MIDI, the virtual control surface, or a
third-party program:
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