E-Mu Ultraproteus Operation Manual page 252

F272 Spectra
This filter can produce some fairly metallic sounds when Morph is set high
and can result in distortion. Use velocity to control Morph for clangorous
effects. Some interesting digital chiffs can be produced as well. Best
tracking is obtained with Key Center C1, and Key to Filt. Freq. Track +127.
Morph: Relatively wide notches become narrow peaks as amount is
increased.
Freq. Tracking: Tunes the filter.
Transform 2: Higher values increase bandwidth.
F273 RippleSheet
Morph: Opens low pass response.
Freq. Tracking: Accentuates higher frequencies as values increase.
Transform 2: Reduces overall filter effect. Provides good velocity
response with the acoustic guitar.
F274 Clear Water
Provides a high frequency sheen to any sound. Transforms perform very
subtly. Transform 2 reduces shimmer effect.
Morph: Modulates high frequency accents.
Freq. Tracking: Tracks Keyboard
Transform 2: Reduces filter effect.
F275 Invisible
Morph: As Morph offset increases, boosts at 70 and 269Hz and cuts at
167, 560, and 810Hz reverse polarity; peaks become notches, and vice
versa.
Freq. Tracking: Raises frequencies two octaves.
Transform 2: Reduces effect of filter.
F276 Wine Glass
Morph: At 0 offset, provides gentle roll-off to 1kHz with peaks at
2.5kHz and 18kHz. At 255 offset, provides a cut at 82Hz and a boost
at 398Hz with a gradual boost from 5 to 18kHz.
Freq. Tracking: Tracks filter to keyboard.
Transform 2: Reduces overall morph effect.
F277 SnakeCros.4
Morph: At 0 offset, provides gentle lowpass cutting frequencies at 431
and 810Hz and boosting 640Hz. At full offset, response is flat with
cuts at 2.6kHz and 4kHz and a slight boost at 6.7kHz.
Freq. Tracking: Flattens response.
Transform 2: Not Used
Z-PLANE FILTER DESCRIPTIONS
Chapter 11: Reference Section 231