BCI SawsAll

A big saw for those super-sized jobs: Three 7 oscillator super saw voices in a single module.

All three voices have independent V/Oct inputs, but share other controls, including:

  • +/- 3 Octave coarse and +/- 1 Octave fine tuning.
  • Adjustable unison detune amount with manual and CV control.
  • Adjustable pulse width with manual and CV control.
  • FM input.

Both Square and Triangle waveforms are influenced by the Width value. For square waves, it sets the pulse width in the traditional fashion, but for triangle waves, it morphs the waveform from negative ramp through triangle to positive ramp. Sonically, the result is similar to square wave PWM modulation, but with less harshness.

The Blend control morphs the output waveform of all active voices from super saw to super square.

The Mix control adjusts the emphasis of the oscillators in all active voices, from favoring the central oscillator in each voice, to a more equal presentation of all the oscillators in each voice.

The Detune, Width, FM, Blend and Mix CV inputs feature "Randuverters" that can be used to add some movement without using external modulation sources.

Stereo outputs are available, and if used the oscillators for each active voice are panned 3 hard right, 3 hard left, with the "center" oscillator in both left and right channels.

The L/M Out jack can be used alone for output from all oscillators from each active voice on a single channel.

Randuverters

An extension of traditional Attenuverters, in addition to providing offest and scaling of an external signal, they can also function as a random source.

If a cable is connected to a Randuverter's jack it functions as a normal Attenuverter, but if no cable is connected, the Randuverter will produce random variations that will be applied in place of the absent external CV signal.

Smoothed random values are available on the right-hand sweep of the Randuverter's knob, with stepped values on the left.

Knob position controls both the rate of random value generation and the intensity of the random effect on the parameter being controlled by the Randuverter.

Turning the knob fully clockwise will maximize both the rate and intensity of smooth random variations, while turning the knob fully counter clockwise will maximize both the rate and intensity of stepped random variations. With the knob at the zero position, no random influence will be applied.