The phaser (or phase shifter) is a classic sound effect often heard on guitars or synthesizers. The sweeping sound of a phaser can vary from subtle modulation and tremolo on a delicate guitar track to the most extreme filtered feedBack. Traditionally, phasers were analog effects devices. Analog phasers delivered the benefits of a smooth analog sound, but like many analog devices were often unreliable and introduced unwanted noise and hum.
A phaser functions by moving a portion of the incoming audio out of phase and then adding the processed audio back to the original signal. Each stage of a multiple stage phaser can be thought of as a narrow band or notch of the frequency range which is filtered out. As the frequency is adjusted, the classic sweeping phaser sound is heard.
TL EveryPhase uses proprietary DSP algorithms to deliver the classic analog phaser sound in digital form, with the added benefits of extensive synchronization and automation options.
The modulation of the phaser algorithm in TL EveryPhase can be controlled by a low frequency oscillator (LFO) or by the envelope of an audio signal using the built-in envelope detector. The Depth control switches TL EveryPhase between phasing in opposite and identical phasing modes, and feedBack can be taken from any stage of the phaser by adjusting the Resonance control.
TL EveryPhase provides controls to enable the LFO to be synchronized to the current tempo of the Pro Tools session. A variety of LFO triggers are also provided to ensure that a phase effect can be created to match the timing of any audio signal.
The envelope detector in TL EveryPhase provides several options to control the phasing directly from an audio signal. Firstly, the envelope detector can be driven by the audio of the current track or audio from a side-chain input. The envelope detector can drive the phaser modulation directly by selecting ENV for the Source in the Modulation section. Alternatively the envelope detector can be used as a trigger for the LFO by selecting Envelope under Triggers in the LFO section.