Delay, Reverb & Space · Audio effect
Chorale
A stereo chorus with the three Juno-style voicings and a Custom mode of one to four voices, plus Tone, Width and Mix, with CC control of Rate, Depth, Width and Mix.
Opinion
Pretty good. Hard not to use at max settings, is fun.
Functionality
Each side is low-passed and written to its own delay line (Input: Stereo, the default, so a stereo source keeps its image; Mono sum sums L and R into one line as the Juno original does). I, I+II and II read it through the fixed Juno sweeps (0.513 Hz and 0.863 Hz, 1.5 to 5.4 ms), a triangle sweep read in opposite directions for left and right. Custom has Rate, Depth (the sweep either side of the centre) and Delay (the centre), with one to four Voices spread round the cycle. Tone opens the filters on the way in and out, Width blends the wet signal from mono to full stereo, and Mix is equal power. CC 1-4 on the CC channel drive Rate, Depth, Width and Mix until you move that control again. The panel shows each voice’s delay sweeping, and the values a controller has taken over.
Status
Core covered by tests (205 checks): the Juno modes against an independent transcription of the source algorithm, the Custom delay, depth, rate and voice spread by correlation, width, tone, controllers, block-size independence and idle behaviour. Voicing of Custom (sine sweep, voice spacing, level) is by ear. Not yet listened to or validated in a host.