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302
E-MU Systems
Preset Programming
Editing Presets
2.
Go to the Filter Frequency and Q screen. Position the cursor in the Freq:
field as shown in the following illustration.
The Frequency parameter determines the filter cutoff frequency or the
frequency the filter uses as the highest frequency allowed to pass.
If you play the keyboard now, you should hear the raw sound. Slowly
decrease the filter cutoff frequency value as you play the keyboard. The
sound gets more and more dull as you remove more and more high
frequencies from the sound. At some point, the sound completely disap-
pears. (You have filtered out everything.) The chart on the following page
illustrates what you just did.
3.
Open the filter back up to 255, then move the cursor to the Q field.
4.
Set the Q to 10, then move the cursor back under the Freq value. As you
change the frequency, notice that the sound now has a sharp, nasal
quality. A high Q boosts or amplifies the frequencies at the cutoff
frequency (Fc).
5.
Reset the cutoff frequency to the lowest setting and the Q to 00.
L1
FILTER Ord Type
Classic 4 LPF
L1
FILTER
Freq: 255 Q: 000
20
40
60
80
100
40
80
160 360 720 1440 2880
Frequency
...
Amplitude
Output of Filter
Cutoff Frequency
Содержание PX-7
Страница 30: ...18 E MU Systems Setup Rack Mounting PX 7 ...
Страница 58: ...46 E MU Systems Basic Operations Sound Navigator ...
Страница 144: ...132 E MU Systems Sequencer Applications ...
Страница 156: ...144 E MU Systems Controllers Menu ...
Страница 170: ...158 E MU Systems Global Menu Miscellaneous Parameters ...
Страница 308: ...296 E MU Systems Save Copy Menu Duplicate Flash ...
Страница 374: ...362 E MU Systems Appendix Warranty ...
Страница 390: ...378 E MU Systems Index Z Notes ...