Detune

Voice Architecture

There is a lot more to effective detuning than simply spacing the frequency between voices. Fathom's detune algorithm was designed from the ground up to create an orchestral sound.

Each of Fathom's 32 polyphonic voices contain up to eight detune voices for a total of 256 voices per oscillator.

This is limited by CPU power. Typically Fathom is capable of playing polyphonic chords with approximately 4 oscillators playing 8 detune voices each, or 8 oscillators with 4 detune voices.

Built-In Chorus

Each detune voice contains a built in chorus voice with its own modulated parameters.

Linear Modulation

External modulation can be applied to the large dials which includes the following parameters: Detune Fine Amount, Detune Note Step, Stereo Width, Chorus Pan, Master Amplitude and Master Frequency.

Linear modulation is provided for the Voice Pan, Voice Volume, Chorus Volume and Chorus Time parameters.

Detune Profiles

When you change the number of detune voices Fathom loads a different detune profile for all the detune parameters on the page.

This means if you tweak the settings using two detune voices, and then change the number of voices to three makeing further changes, when you go back to two voices your previous settings are recalled.

This enables you to create a completely different profile for each number of voices. These profiles are saved when you save a preset and recalled when you load it.

You can also change the default profile used when a new oscillator is added to the signal flow.

Non-Linear Modulation

Non-linear or double modulation is provided for each detune voice frequency.

The frequency is modulated with a sin wave controlled by dials for the amplitude and frequency of modulation.

These two controls themselves can also be modulated with their own sin wave controlled by a second set of amplitude and frequency dials.

Non-linear modulation allows you to either emphasize or eliminate resonant beats. Without non-linear detuning these subtle nuances of detune oscillators would be outside your control.