Phase and Freq

See the curve options reference for native menu screenshots and parameter-by-parameter tables.

Phase

Phase provides a frequency-dependent phase curve. The spectral path combines that curve with general phase rotation and Curve Depth.

Select Phase and open its options. FIR Spectral controls the FFT-based phase path. L degrees and R degrees set broadband phase rotation; Link links those rotations. Curve Depth scales the frequency-dependent curve's contribution.

The same menu exposes an IIR Shifter, with filter type, stacking, frequency and spread controls. Its use dry/wet and even if spectra off switches determine how it relates to the main phase controls. Check these switches when disabling the spectral path does not remove the whole effect.

Inv L and Inv R invert polarity. Polarity inversion is a different operation from drawing a frequency-dependent phase curve.

Phase: native spectrum bins behind the editable phase curve, using the stereo audio example.

Freq

Freq turns the editable curve into spectral gain values. Use it to shape the frequency balance of incoming audio. Eq → Max dB controls the gain scaling at the top of the curve. Use the bar underneath the Freq case to adjust its contribution, or combine it with the global Dry/Wet control.

The options include Band Split controls for Bass-Mids, Mids-Hi and Cross slope. These define spectral bands used in the processing and modulation workflow.

Freq: native spectrum bins with a flat gain curve, using the same audio example.

Sculpting a band-pass EQ

Draw a low curve at both ends and keep the middle higher to build a band-pass-shaped EQ. The example below preserves a central band while attenuating the lows and highs. Move the main points to change the band's width and use the Bezier handles to reshape its shoulders.

Band-pass-shaped Bezier EQ with audio. The square at the upper right previews the response; Cutoff is centred in this image.

Cutoff preview and sweep

The small square at the upper right previews the Freq response with its Cutoff shift. Drag vertically in this control to sweep the response across frequencies while keeping the Bezier shape. The narrow slider underneath shows the manual offset. Right-click the control to reset that offset to the centre.

Cutoff close-up: the same shape shifted toward higher frequencies, with the offset shown in the slider below.

Separate display from processing

The Screen section contains Max dB, Min dB, Tilt and speed / avg. These affect how you read the analysis. Eq → Max dB sets the response scaling; it is distinct from Screen → Max dB.

Spectral timing

Open Setup for FFT and Window. FFT size trades frequency resolution against time resolution. Window governs how often the FFT is recomputed; the overlap indicator describes their relationship. Smaller recomputation intervals require more CPU.

See Setup when comparing latency and processing cost.

Native interface captures

These images use the actual PsyPhaZ 1.1.05 editor with the same reproducible stereo audio example. Click an image to open it at full size.

Phase page with audio in the scope and native spectrum bins behind the flat phase curve.

Freq page with audio in the scope and native spectrum bins behind the flat gain curve.