Fluid Area

The FLUID AREA is where you interact with the fluid simulation that drives all of CP 1919's oscillators. Each bright line in the fluid corresponds to an oscillator with a waveshape determined by the fluid. The oscillators are tuned relative to the base pitch using the PITCH SPREAD ribbon controller and the SPREAD LFO.

Pitch Spread

The PITCH SPREAD ribbon controller lets you detune all of the oscillators relative to the base oscillator. The base oscillator frequency is set with the KEYBOARD. The remaining oscillators are detuned depending on the PITCH SPREAD setting. The extreme left position results in very little detuning giving a fat analog unison sound. The extreme right results in a full octave detune, giving the broadest frequency range. Various detune intervals are marked on the ribbon.

Comlink

COMLINK allows you to interact with other applications as well as The Strange Agency. It brings up a new window where you can COPY to other applications, use Dropbox to transfer audio files to and from other devices, view this manual, or leave feedback about the application.

Zero

Hold the ZERO button to rapidly drain the energy from the fluid simulation, effectively silencing it.

Linear

Sets the oscillator spread scaling to the original CP 1919 linear mode. In this mode the ribbon determines a linear multiplier of the base frequency which scales the oscillator stack. As of version 1.5, CP 1919 defaults to a new equal-tempered mode, in which case the ribbon scales the oscillator stack exponentially. Use this mode for organ-like additive synthesis.

Filter

Puts the FLUID AREA into filter mode. With FILER enabled, touching the area lets you choose how much of each frequency band will appear in the mix. For each fluid oscillator, the X position controls its volume, with no sound on the extreme left and full volume on the extreme right.

Fluid Control

SPEED determines how quickly the fluid evolves. You can use this to freeze the fluid or make it move more rapidly.

GIRTH controls the effective size of your touches. A large girth will give you fat fingers making smooth waves. A small girth makes sharper waves, which have a rougher, more harmonic sound.

DECAY drains the energy from the fluid, making it subside. Turning this up makes the waves disappear very quickly letting you essentially pluck the fluid as if it were a harp. Turning it down makes the waves last, creating drones and letting you control the sound with the KEYBOARD or PITCH SPREAD ribbon.

BOUNCE controls the tendency of the waves to bounce. Turning this down will let the fluid grow (if DECAY isn't too high), eventually hitting a limit and creating loud distortion.

LFO XY Pads

These pads allow you to automatically wiggle the PITCH and PITCH SPREAD. The long dimension determines the speed of the wiggle, while the short dimension determines its intensity.

Keyboard

Use the KEYBOARD to play notes like with any keyboard instrument. Only one note at a time can be played. Dragging the keyboard moves it, allowing you to play at different octaves.

Hold

With HOLD mode enabled, CP 1919 endlessly plays back the most recently played KEYBOARD note, with possible modulation from the two XY PADS. With HOLD mode disabled, the ENVELOPE will determine note onset and decay as you tap the KEYBOARD.

Envelope

Although you can adjust ENVELOPE settings in any mode, they only have an effect on the sound when not faded out. The ENVELOPE has no effect in HOLD mode.

Envelope controls work like those found on synths of yore. ATTACK determines how quickly a note fades in, DECAY how quickly it fades to the SUSTAIN level, and RELEASE how long the note is held once you stop touch the KEYBOARD.

Main Mix

The GAIN slider controls the volume of the sound by increasing the source gain. PITCH will tune the output sound. The middle position applies no detuning. ECHO GAIN controls the amount of echo mixed in, while ECHO TIME controls the length of the echo.

Performance Record

Starts recording the sounds you are making with CP 1919. These recordings can be saved as WAV files in the Documents directory of the app. You can access them through iTunes, by connecting and selecting your device, and clicking the Apps tab. You can also COPY them for use in other apps or place them in your Dropbox via COMLINK.