Pitch Doubler

PitchDoubler is a stereo, pitch shifting doubler effect generating the effect of additional voices from its input. It is based on the same pitch shifting technology as VocalShift, with the associated low latency (<6ms), wide frequency range (down to around 80Hz) and minimal phasing / flutter artifacts. The effect squeezes two channels of high quality pitch shifting into a single effect slot, along with further features such as adjustable delay and modulation.

The PitchDoubler has independent left and right channels, which can be mixed to the left/right outputs of the effect by means of the stereo width control.

The doubling effect is achieved using time delay and modulated pitch shift. Sliders are provided on each channel for independent control of the delay and the pitch shift. A switchable LFO module provides a natural variation in the pitch shift. This has adjustable rate and depth of pitch modulation. Each channel has its own level control.

Delay - Sets the amount of delay applied to each voice. It is adjustable from 0 to 25ms. A readout of the delay value is provided below the fader.

Pitch - Sets the amount of pitch shift provided, varying from -100 cents (= 1 semitone) at the lower position to +100 cents at the upper position. The centre position corresponds to zero pitch shift. A readout of the current pitch shift value is provided below the fader.

Width - Controls the stereo width of the two voices, and therefore the weighting of each in the left/right output channels. At the “Mono” position, the left and right channels are mixed equally to both left and right channels, resulting in a centre pan, mono effect. At the “L/R” position, the left voice is fed only to the left channel and the right voice to the right channel. Other positions graduate between the two.

Level - Provides attenuation for each voice in the doubler. A level of 0dB will pass the voice without any attenuation. A level of -6dB will pass the voice at half volume, and -Inf will zero the output. A readout of the current gain value is provided to the bottom left of the rotary.

Pitch Mod Panel

Active - This panel presents controls for applying LFO (low frequency) modulation to the pitch shift setting. Make sure the “Active” switch is turned on.

Rate - Controls the rate (frequency) of the LFO applied to the pitch shift. The rate is adjustable from 0.1Hz to 10Hz.

Depth - Controls the depth of modulation applied to the pitch shift. Full depth (100) means that the pitch shift is modulated by the full amount of its current setting. If depth is 0, no pitch modulation is applied.