Rossum PANHARMONIUM, Руководство по эксплуатации, Страница: 16 / 33

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8. The Oscillator Bank
The Oscillator Bank consists of 33 digital
oscillators that are used to resynthesize the
analyzed spectra.
WAVEFORM
The Waveform control
selects the waveform
that will be used by the
oscillators. In addition to
the usual sine, triangle,
sawtooth and pulse
waveforms, two special
crossfading sine and sawtooth waveforms are
included.
When using the normal waveforms, at the
beginning of each new slice, each oscillator
immediately moves to the frequency
assigned to it by the spectral analyzer (unless
Glide is enabled, in which case it glides to the
new frequency).
When using either of the crossfading
waveforms, Panharmonium executes a
crossfade between the outgoing oscillator
pitch (from the previous slice) and the pitch
of the new slice. The crossfade time is the
duration of the new slice.
A TIP:
The easiest way to understand this
is to hear it:
Pick some input audio with a changing
spectrum (a full mix would be good).
Set
Slice to minimum and Multiplier to 32.
Select the regular Sine waveform and listen to
the result.
Select the crossfading Sine waveform and
listen to the result.
Slowly turn up the
Slice
time and listen to the
result.
A NOTE:
Keep in mind that while crossfade
waves and oscillator glide both affect
the transition between slices, they are two
entirely different effects. With glide, the pitch
of each oscillator moves smoothly for one
frequency to the next. With crossfade waves,
the incoming and outgoing pitches remain
constant while their amplitudes are inversely
modified. An exception is if Glide is applied
to crossfading waveforms, in which case the
outgoing pitch remains constant, while the
incoming pitch glides toward its target pitch as
it fades in towards its target amplitude.
ANOTHER NOTE:
Whether to use a regular
or crossfading waveform is entirely a
matter of your musical intent. The crossfade
waves are great for smooth drones, ambient
textures, etc. But when resynthesizing
intelligible human speech, the regular
waveforms are typically preferable.
The CV2 input can be assigned to voltage
control the Waveform selection. See Chapter
9 for details.
FREQUENCY
The frequency of Panharmonium’s output
is controlled by the
Frequency knob, the
1V/OCT input and the FM input and its
associated attenuverter.
The Frequency control lets you smoothly
adjust Panharmonium’s frequency over
a range of +/-7 semitones. Its setting is
summed with the
1V/OCT input and the FM
input to define the final frequency.