Hoffman Amplifiers Tube Amplifier Forum

Other Stuff => Effects => Topic started by: shooter on August 19, 2014, 04:42:07 pm

Title: chorus vs tremelo
Post by: shooter on August 19, 2014, 04:42:07 pm

trying to get the jist of the difference between the 2.  I read a fender owners manual that says chorus creates a carrier frequency that is FM modulated at about the same frequency as a tremolo osc.  My understanding is with a stereo amp the audio effect "ping-pongs" L/R for chorus.  I understand AM vs FM modulation in transmitter but having a hard time correlating it to guitar amps.

 What audio difference is there in a non-stereo amp?


thanks

Title: Re: chorus vs tremelo
Post by: thermion on August 19, 2014, 05:04:00 pm

Tremolo is volume modulation and chorus is a tone filtering effect. You could emulate a tremolo circuit by rocking a volume pedal to and fro (amplitude modulation, AM). Chorus effects typically involve injecting a slightly delayed signal back onto the original signal and an LFO for movement; the slightly out of sync signals create filtering that sounds sorta like a chorus of singers (frequency modulation, FM). I am not sure how stereo effects of either variety process differently between outputs, possibly by some offset of delay time or LFO frequency?

Title: Re: chorus vs tremelo
Post by: shooter on August 20, 2014, 08:43:08 am

Quote from: thermion on August 19, 2014, 05:04:00 pm

Chorus effects typically involve injecting a slightly delayed signal back onto the original signal

Thanks, that was the part I wasn't getting!