Gravity Well

Orbital Mechanics, Anyone?

Picture a unsuspecting signal heading toward a
menacing-looking planet. Moons swirling around
the planet pull at the gravity field, constantly
changing it. As the signal passes the immense
gravity field bends and warps it into a whole new
signal...

Our first foray into the Eurorack scene. The Gravity
Well is a wave modifier using asymmetrical wave
warping to create interesting new sounds. Think
of the signal in orbit around a heavenly body
whose gravity is being changed by the CV inputs.
One CV varies the gravity field, another pushes it
to one side, the third affects the north-south
magnitude, and the forth the east-west. The
module has one signal input and four CV inputs,
all of which have level controls. Each CV channel
has a BIAS control for setting initial bias level.
Gravity Well
The module works by warping the positive and negative portions of the
incoming signal by amounts determined by the CV inputs. The
Inclination CV varies both polarities equally. The Eccentricity CV
increases the positive warp and decreases the negative warp. The
Longitude CV increases the positive warp only, while the Latitude CV
increases only the negative warp.

This module uses +/- 12 volts@40mA and takes 12 te/hp of rack space.
MP3 SAMPLES
2 oscillators tuned to same note, 1 into input, the other into INC input.
Raw; no other processing.
2 oscillators tuned apart, 1 into input, the other into ECC input, INC at
50%. Raw; no other processing.
2 oscillators, 1 into input, the other into ECC input, LFO into LON input.
Raw; no other processing.
Drone Mixer:

Each manual offset is set full CCW. A sine from an osc (Hertz Donut)
is sent to the input. Sines from four different sources are added
connected to each CV input. The CV sources are faded in one by one
from the bottom up and their CV amount is set to full. The rates of the
CV sources are tweaked.
MP3 Samples courtesy of Kodama
CV Fun:

No input is connected to the GW. 4 Sine sources are patched into the
4 CV ins. A sine OSC's frequency is being modulated by the output.
The frequency of the 4 sines CV sources is being manually changed.
CV Feedback:

The GW output is patched back into the GW input. A sine LFO is
connected to the Eccentricity CV in at full level, and another to the
Inclination CV in at full level. The two LFO freqs are tweaked. The 2nd
example CV feedback is the same, except that the the V ins are set to
half level.
Wavefolder Friend 1:

All of the GW bias controls are set to CCW. A sine LFO is input,
another is connected to the Eccentricity at full level, and another into
the Inclination at full level. The output is sent to a Toppobrillo TWF,
which is not modulated. The frequencies of all 3 LFOs are tweaked.
Wavefolder Friend 2:

Sawtooth OSC input. All CV ins have a sine LFO and are set to half
level. All bias controls are set to 2. The output is fed to the Toppobrillo
TWF. LFO frequencies are tweaked.

A simple S&H sequence controls the pitch of a saw OSC that is input
into the GW. Inclination is CCW, Eccentricity is full CW, Longitude is
full CW, Latitude is set to 5. An LFO is input to Longitude at half.
Another LFO is input to Inclination at full level. The output is put
through the Division 6 Filtaire filter, which is being opened by a simple
decay envelope.