Music Production
Calculate how the LFO influences your delay time for lush, swirling sounds.
Shape your chorus modulation with clarity.
Chorus is a modulation effect that duplicates an audio signal and slightly detunes it, creating a thicker, wider sound. The effect's character depends on two parameters: depth (how much detuning occurs, in cents or frequency deviation) and rate (how fast the detuning oscillates, in Hz or BPM). The chorus depth and rate calculator helps producers dial in the precise modulation settings to achieve specific sonic characteristics, from subtle doubling effects to spacious, swirling textures. Understanding these parameters enables creative control over the effect's intensity and musicality.
The calculator demonstrates how depth (typically 5-50 cents) controls the detune amount between the original and modulated signal. Higher depths create wider, more obvious chorus effects; lower depths offer subtle thickening. Rate (typically 0.2-10 Hz) controls the modulation speed. Slower rates (0.2-0.5 Hz) create smooth, spacious effects; faster rates (2-5 Hz) produce shimmering, bubbly textures. The tool visualizes these interactions to help you find the sweet spot.
Detune Amount (cents) = Depth × 100. LFO Frequency (Hz) = BPM / 60 × Note_Division. For example, a quarter-note LFO at 120 BPM = 120/60 × 1 = 2 Hz. Perceived chorus width increases with depth; rate primarily affects smoothness (slow) vs. shimmer (fast).
Both are modulation effects, but flanger uses feedback and phase cancellation, creating a more dramatic, resonant comb-filter sweep. Chorus uses simple detuning without feedback, producing a smoother, more natural effect. Flangers sound more pronounced and aggressive; choruses are more subtle and musical. Flanger rate and depth are more extreme than chorus to achieve its characteristic sound.
Excessive depth (over 50 cents) creates tonal instability and artifacts. Too-fast rates can sound metallic. Intermodulation with other effects (reverb, delay) can muddy the sound. Try reducing depth to 10-25 cents and rate to 1-3 Hz. If using wet/dry blend, ensure the dry signal isn't too low; 50-70% dry signal keeps the original character recognizable.
For rhythmic, groove-oriented music, tempo-syncing the chorus LFO creates cohesion. For organic, evolving effects, unsync works better since the modulation drifts independently of the beat. Try both approaches; some sounds need rhythmic locking, while others benefit from free-running modulation that creates subtle, unpredictable variations.
Yes, subtly. Use depth 5-15 cents and rate 0.5-1.5 Hz for imperceptible widening that thickens without obvious modulation. Higher depths or rates sound processed. For background vocals and harmonies, chorus is excellent; for lead vocals, use sparingly and subtly. Always maintain vocal intelligibility; if lyrics become unclear, reduce chorus amount.
