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Morpheus Operation Manual202

Z-PLANE FILTER DESCRIPTIONS

F153 Bw65Hz/2k.4

This filter is similar to filter 152, but in addition to sweeping the

bandwidth of a single peak along the Morph and Frequency

Tracking axes, the peak itself is swept. The range of the frequency

sweep is one octave along either axis, although much greater

ranges of change are achieved when both the Morph and Fre-

quency Tracking axes are combined. Effects range from gentle,

analog-style filter sweeps (with the Frequency Tracking parameter

set low), to more ‘digital’ sounding effects in which high-pitched,

whistling harmonics are produced.

Morph: Controls bandwidth and frequency.

Freq. Tracking: Tunes the filter.

Transform 2: Not used.

F154 Bb80Hzbw1.4

With a Morph Offset value of “0”, the lowpass filter cutoff is set at

400Hz, and there is a wide-band bump at 80Hz. Morphing the

filter increases the gain of this bump from 6 dB to 24 dB. Fre-

quency Tracking increases the cutoff to 19.5kHz, and decreases the

bandwidth of the 80Hz bump.

Morph: Controls bandwidth.

Freq. Tracking: Tunes the filter.

Transform 2: Not used.

F155 HighsTwist4

The frequencies of the poles and zeros in this filter remain con-

stant as Morph or Freq. Tracking are modulated, but the ‘Q’ values

are modulated in a variety of ways. The filter is closest to flat (with

some emphasis in the high frequency range and a small bump at

about 200Hz) when Morph Offset and Frequency Tracking are

both set to 000. Modulating either or both of these parameters

upward emphasizes more of the highs, with increased values for

Frequency Tracking, rolling off the lows as well.

Morph: Controls filter ‘Q’.

Freq. Tracking: Modulate upward for thinner, brighter sounds.

Transform 2: Not used.

F156 Cubix

Morphing this filter produces a lowpass filter sweep effect, while

pushing the Frequency Tracking parameter in a positive direction

moves the filter towards a more flat response, with a bit of subtle

emphasis in the higher frequencies.

Morph: Produces low-pass filter effects.

Freq. Tracking: Use to control key tracking or to set overall filter

depth.

Transform 2: Controls brightness.

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