The chorus effect is produced by mixing two audio signals, one of which is slightly delayed. The result of this combination produces a very subtle detuning vibrato effect which generates the sensation of splitting the original signal.The Rate control varies modulation speed altered by the Depth control. The combination of these two controls generate a unique in its kind modulation effect, offering warm and enveloping gap sounds that only can be provided with a high quality analog chorus.
Here's some code to post a link with image on forums, eBay, websites,...
low frequency oscillator lfo-controlled fx pedal stompbox stomp box guitar effects pedal modulation modulate time-based lfo vibrato vibrate vibe