Erica Synths LXR Eurorack Drum Module (28 HP) - Manual (Page 36)

8.6. Bells
8.6.1. Realistic bells
Realistic bells are best achieved using FM oscillators. As long as you have a complex noisy,
metallic spectrum, you just need to add an exponential decay amplitude envelope and a bandpass
filter to get different kinds of bells. The sample rate reducer is also very useful to make the sound
more metallic.
8.6.2. 808 style cowbell
The 808 cowbell consists of 2 detuned rectangle oscillators send through a bandpass filter.
Recommended voice: drum voice 1-3
FM Page
• set mode to mix. The main and FM oscillators are now mixed together.
• Set amount to 63. This sets the mix ratio between the 2 oscillators to 50% each.
• Select a rectangle waveform
• set frequency to something around 78
OSC page
• Select rectangle wave.
• Set frequency to 71
Amplitude envelope
• Attack 0
• very exponential slope around 2 to 5
• depending on the slope setting a short decay in the range of 25 to 50
Filter
• Use a bandpass filter
• medium resonance around 70
• cutoff frequency around 92
LXR Owners Manual - 36 -