MULTIMODE FILTER · PHASE · MODULATION
A precision multimode filter built for detailed tone shaping, flexible routing and deep modulation — with real-time response, FFT and phase analysis in one focused interface.
FATSAW SOFTWARE
FSW Filter
FSW Filter combines detailed filter design, advanced routing, phase modes and a modular modulation system while keeping the signal path visible and fast to edit.
01 / FILTER ENGINE
Each filter module gives direct control over cutoff, resonance, drive, pan, channel mode, filter type and slope. The large response view keeps the active filters and their combined result visible while you work.
02 / ROUTING
Route up to four filters as a straight serial chain, fully parallel network or hybrid structure. The routing graphic shows the signal flow directly, so complex combinations stay clear at a glance.
03 / PHASE MODES
Switch directly between Zero Latency, Natural Phase and Linear Phase. The dedicated selector makes the active processing mode explicit at all times.
04 / MODULATION
Build movement with graphical LFO and ENV modules directly inside the Advanced section. Add modulators as needed, edit their shapes visually and drag each source to compatible filter controls for fast, musical modulation.
05 / FOLLOWER · INT / EXT
Switch an envelope to Follower mode and choose INTERNAL to react to the plugin input or EXTERNAL to follow a sidechain source. Shape the response with Amount, Attack, Release and Sensitivity while monitoring the detector in real time.
06 / 4 FILTERS · RESPONSE & FFT
View the four active filter curves, the combined SUM response and the live output FFT in the same analyser. The keyboard reference makes it easy to relate resonant peaks, cuts and harmonic structures to musical pitch while shaping complex multi-filter patches.
07 / RESPONSE · FFT · PHASE
The main analyser combines the active filter curves, the SUM response and the live output FFT with a dedicated phase area below. Group Delay makes the frequency-dependent timing behaviour visible in the same view, so spectral changes and phase behaviour can be read together.
08 / STEREO · MID · SIDE
Choose whether FSW Filter processes the full stereo signal, only the Mid information in the centre, or the Side information at the edges. This makes it possible to shape tone and space independently without leaving the main global section.
Part of the FATSAW Software ecosystem