User Guide

Chapter 29 Ultrabeat 605
3 Vary the frequency of band 2 (easily recognizable in the blue part of the EQ graph) to
influence the extent of bass drum tonality.
A further method for reducing the tonality of a drum sound that is rich with overtones
is to use a lowpass filter. In the following example, you will control the cutoff frequency
of the filter with an envelope.
To reduce tonality using a lowpass filter:
1 Reload the Standard Tutorial sound, choose A#0 as the basic pitch in Oscillator 1 and
modulate it (as shown in the example page 603) using Env 1.
2 Increase the Saturation parameter value to enhance the overtones of the drum sound.
Note, that the output of Osc 1 is directed to the filter, as the filter bypass button (the
arrow between Osc 1 and the filter) is activated.
3 Make the settings shown in the following graphic to the Filter section:
 Filter type: LP 24
 Cutoff value: 0.10
 Mod Source for Cut: Env 3
 Mod Amount for Cut: 0.60
 Resonance: 0.30
4 Set the attack time of Env 3 to zero. Use the Decay time of Env 3 to shape the sound of
the filtered bass drum.
5 You may also choose to control the filter resonance with an envelope. Make sure you
dedicate a single envelope to this function (in this case, use Env 2 as a Mod source for
Res). Choose a Mod amount for Res of about 0.80. Select a longer decay time in Env 2
than in Env 3 and listen carefully to the fatter and more atonal bass drum sound
achieved through this Res modulation (due to the higher filter resonance).
Note: The bass drum described in the above example is called Kick 2 in the Tutorial Kit,
at a pitch of C#1. It also features an interesting EQ setting (see paragraph below).
More Bass …
Use the Kick 2 filtered bass drum sound as a starting point, and try out the remaining
parameters in the phase oscillator. You will discover that high saturation values make
the sound rounder and add more bass, for example. The character of the example is
beginning to head in the direction of a TR-909.