Tidal filters cutoff, hcutoff, and djf shape a sound's frequency content

Tidal exposes SuperDirt’s frequency filters as control patterns. cutoff applies a low-pass filter and hcutoff a high-pass; both take the corner frequency in hertz. resonance and hresonance emphasize the frequencies around the corner and range from 0 to 1 — high resonance can get very loud, so raise it cautiously. djf is a single immediate filter taking 0–1: below 0.5 it acts as a low-pass, above 0.5 as a high-pass, making it convenient for live sweeps. Like all effects these accept patterns, so a filter can change per event or per cycle.

Examples

d1 $ sound "tabla*4" # cutoff 400 # resonance 0.2      -- low pass
d1 $ sound "tabla*4" # hcutoff 600 # hresonance 0.2    -- high pass
d1 $ sound "tabla*4" # djf "<0.2 0.8>"                 -- one knob, LP then HP

Assessment

Apply a low-pass filter to a drum loop with cutoff 400 and resonance 0.2, then a high-pass with hcutoff. Then use djf and explain how a value below 0.5 differs from one above 0.5.