The Kyma Language for Sound Design, Version 4.5

In both of these expressions, !Vowel is used as an index into an array of possible frequencies and amplitudes.
‡ For example, if !Vowel is 0, the formant frequency is 2450 hz and its amplitude is -12 dB (the
values for the vowel A). If !Vowel is 7, the formant frequency will be 2200 hz and its amplitude will be
-19 dB.
When a new frequency and amplitude are selected, they are approached smoothly over the course of 0.25
seconds, rather than jumping immediately to their new values (this is due to the
smooth: 0.25 s
following each array.
Next, play the Sound called wow, and play some low notes on a MIDI keyboard. This is a FormantBank-
Oscillator synthesizing the vowels OO and A. If you open wow, you will see that it is a Formant-
BankOscillator whose Spectrum comes from two, interpolated SyntheticSpectrumFromArrays: one
containing the frequencies, amplitudes and bandwidths for an A, and the other containing the same information
for an OO. A FunctionGenerator on a Gaussian wavetable, triggered by !KeyDown, controls
the interpolation between the parameters for OO and A, making a smooth transition between the two.
‡ The formant amplitudes and frequencies for these examples were found in Computer Music, written by Charles
Dodge and Thomas Jerse, published by Shirmer Books.
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