The Model 297 Infinite Phase Shifter displaces the phase of an applied signal by up to 1,800 degrees, depending on frequency and number of stages selected. The phase-shifted signal may be combined with the original to create a moderately warped comb filter with complementary outputs. Notch density and depth can be varied through feedback (resonance) and stage selection. A wide range sweep oscillator enables the familiar cyclical phase shift effect.
All parameters (phase shift, notch depth, sweep rate, sweep depth, resonance) are voltage controlled, with processing control inputs where appropriate. A built-in envelope follower facilitates the creation of amplitude-dependent effects.
The 297 is capable of ‘barber pole’ phasing, with the phase shift (and the consequent filter peaks and notches) continuously moving in one direction. Unique circuitry provides (or consumes) the extra time involved in this process. The rate of change can be varied up to 2.5 octaves per second in either direction and is voltage-controllable.
Please note that the 297 is not an ‘e’ series module; its parameter settings cannot be internally stored.
Other modules by Buchla | 206e Mixer / Preset Manager | 207e Mixer / Microphone Preamplifier | 210e Control and Signal Router | 223e Multi-Dimensional Kinesthetic Input / Tactile Input Port | 225e MIDI Decoder / Preset Manager | 227e System Interface | 230e Triple Envelope Tracker / Preamplifier | 250e Arbitrary Function Generator | 251e Quad Sequential Voltage Source | 252e Buchla Polyphonic Rythm Generator | 256e Quad Control Voltage Processor | 266e Source of Uncertainty | 257e Control Voltage Processor | 267e Uncertainty Source / Dual Filter | 261e Complex Waveform Generator | 259e Twisted Waveform Generator | 272e Polyphonic Tuner | 266e Source of Uncertainty | 281e Quad Function Generator | 285e Frequency Shifter / Balanced Modulator | 291e Triple Morphing Filter | 292e Quad Dynamics Manager | 296e Spectral Processor