DOEPFER A-107 Manuale - Pagina 13

Sfoglia online o scarica il pdf Manuale per Sistemi di filtrazione dell'acqua DOEPFER A-107. DOEPFER A-107 18. System a - 100, multitype morphing filter

Stampa la pagina

doepfer

6. User examples

In the following we use the abbreviations LP

(lowpass), BP (bandpass), HP (highpass), AP

(allpass), NF (notch filter).

Before you continue with more complex appli-

cations of the A-107 we recommend to ac-

quaint with the 38 filter types described in

chapter 7. Take the time to hear all the filters

and how they respond to filter frequency, reso-

nance and distortion. Find out how morphing

between 2 filters is influenced by the morphing

time. Differences in loudness can be compen-

sated with the amplitude control.

The easiest application is to use only one single filter

from the pool of 38 filters. This makes quite sense as

there are a lot of filters available that cannot be reali-

zed with other A-100 modules (e.g. the "fast food filter"

no. 09, look at response curve to understand the name

"fast food"). But the point of the A-107 are of course

the filter chains and the morphing features. In the

following we describe some suggestions:

System A - 100

Clocked mode

The advance to the next filter in the chain can be

triggered by different events. Here some examples:

• Advance triggered by a keyboard by using the gate

signal as step clock

• Advance triggered by manually operated control

devices like foot switches (A-177), Theremin

(gate output of the A-178), light controller (gate

output of the A-179), ribbon controller (gate out-

put of the A-198)

• Random advance with the Random Clock Genera-

tor A-117 or A-149-2 (or via CV with the A-118

random CV output or one of the outputs of A-149-1)

• Periodical advance with the rectangle output of a

LFO, any clock signal or in sync with MIDI clock

(clock out of the A-190 divided by the clock divider

A-160 to obtain a smaller clock frequency)

• Rhythmical advance by means of clock divider

and sequencer A-160/161, combined e.g. with the

logic module A-166 and using the step reset input

of the A-107,

• more complex rhythmical filter sequences by

controlling the step clock by the trigger output of a

analog sequenzer (A-155 or MAQ16/3) or a trig-

ger sequenzer (Schaltwerk)

Multitype Morphing Filter

A-107