Photosounder has released an eq plug-in. SplineEQ is a linear phase equalizer plugin. Designed to be simple and
flexible, SplineEQ allows you to create filters using Bézier splines,
the best known way to design curves.
Linear phase equalizer. Offers a better sound quality than
the more common minimum phase equalizers by not affecting the phase of
sound, only the intensity of frequencies, which makes it easier to
achieve good sounding results. Also has the advantage of not incurring
aliasing artifacts.
Spline-based filter design. Filters are simply created by
designing a spline curve which can be made to adopt any imaginable
shape. No filter types to choose from, all points simply define part of
the shape of the filter's spline curve. The actual filter's frequency
profile is displayed as a dashed curve when it differs from the ideal
spline curve (this can be changed by changing the filter's resolution).
Up to 60 bands (only up to 4 in the free version of
SplineEQ) or as low as 1. You can create or disable bands by double
clicking on the visualisation area of the interface and adjust them
either in that area or using the knobs or even the automatable parameter sliders in the host's interface.
Simple curve modification functions. You can modify the curve as a whole using the transpose function to shift the curve up and down by up to 10 octaves, affect the overall gain to shift all gain settings up or down evenly or even change the gain scale to apply a ratio to all gains, thus enabling you to either flatten, exaggerate or reverse the shape of a curve.
Frequency analyser. More intuitive than your usual
logarithmic curve frequency display, this frequency analyser shows you
the intensity of frequencies before and after the filtering with
colours. It's also fine tuned so that intensities at different
frequencies are represented in a way that matches closely to our
perception. It moves in a fluid manner in sync with the source sound and
has a frequency resolution of about 10 Hz.
Smooth and fluid graphics. The whole interface responds
fluidly to change, even the frequency visualisation has a great frame
rate and all the graphics are perfectly anti-aliased.
-Infinite dB to +60 dB gain range. This allows you to
completely silence entire ranges of the spectrum or to really bring back
some fainter harmonics by boosting their amplitude thousandfold. Gains
are represented logarithmically between -60 dB and +60 dB and linearly
below -60 dB. Given the uniquely immense gain range there's also a
built-in limiter whose knob lights up when over the adjustable threshold.
Smooth transitions. Changing parameters, either by adjusting
the knobs, the graph or by parameter automation is always done smoothly
and creates no audio artifacts.
Adjustable resolution, latency and CPU usage. The resolution
of the filter can be lowered or increased (up to roughly 22 Hz) and the
processing latency can be changed to obtain a lower CPU usage or a
lower latency.
Good performance. Linear phase equalizers always require
more power than other types of equalizers. However SplineEQ is as fast
or faster than other linear phase equlizers, often with less latency.
