The Kyma Language for Sound Design, Version 4.5

SpectrumInRAM
Spectral Sources Category
This Sound is used only as the Spectrum input to an OscillatorBank.
It reads an analysis file that contains a series of spectra indexed by TimeIndex. It outputs a spectrum as
a sequence of (amplitude,frequency) pairs on every sample tick for nbrPartials samples. After nbrPartials
samples, it starts over again from the fundamental and outputs the entire spectrum again.
Frequency
Use Default to leave the frequency unchanged from the original analysis. Otherwise, the frequency
envelopes will be altered to scale the base pitch of the analysis to the value listed in this parameter field.
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:
!Pitch (key number plus pitch bend)
!KeyNumber nn (MIDI notenumber)
4 c + (!Frequency * 9 nn) (continuous controller from 4 c to 4 a)
Level
This is a control on the overall amplitude of all the partials. Enter 1 to leave all amplitudes as they are;
numbers larger than one result in a gain, and numbers less than one result in attenuation.
TimeIndex
This selects where we are in the series of spectral snapshots. The first snapshot is at -1, the middle
snapshot is at 0, and the last snapshot is at 1. To go through the series in linear time, use a
FunctionGenerator whose Duration equals the duration of the original recording and whose Wavetable is
FullRamp (which goes from -1 to 1). Change the Duration of the FunctionGenerator to go through the
spectra at different rates. Change the wavetable to go through the spectra in a different order.
Analysis
Use a spectrum file from the Wavetables folder or directory. These files came from spectral analyses
performed on digital recordings by the Spectral Analysis Tool or by Lemur.
NbrPartials
This is the number of partials you want to output for the resynthesis. Use Default to output all of the
partials in the file.
FirstPartial
This is the first analyzed partial that you want to output--usually it is partial number 1. If you want to skip
over some of the lower partials, enter a higher number here.
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