Options for delay modulation


  • Yes, I'm aware that those two effects have similarities, and chorus is a delayed vibrato mixed with the dry sound, as I mentioned in one of my earlier post. Still they are considered as different effects, they sound different (at least in most cases), they have different names and they are found as separate effects in fx processors.

  • I know this has been mentioned in other threads but how about this for implementing it-


    if you could have a soft button in the delay to link the Mod slot to the delay repeats. with this option you could apply any effect you like just to the delay repeats?


    That would be a great idea. Something like in TC Electronic G-System where you can choose different routing and have the modulation effect the "normal" way, or just for the delay repeats.

  • Well, the Modulation of the Delay is a vibrato.
    It is working in opposite phase to detune the left and right side to create a stereo effect for the delay, equal to the air chorus.


    Tthe Modulation parameter controls the rate and depth simultaneously.
    I cannot see an advantage to have those controls separately for the delay.
    The U2 example can be well achieved with this.


    The Strymon Timeline has an equal setup, but with separate rate and depth control.
    Can you tell that having separate control is a big advantage?


    Background: both rate and depth control the detune of the delay, but work against each other in a way. A combined "Detune" does the job perfectly, without having to trade two knobs against each other. That's what "Modulation" is.


  • If you, as the one who designed the unit, say that the modulation is vibrato, then it must be vibrato. The reason why it sounds more like chorus or flanger, is then beyond my knowledge. Maybe it is because of the opposite phase?

  • As the left signal rises in pitch, the right signal decreases. You get a detuned sound between left and right as well as if you sustain the original note. A chorus is very similar - the pitch is shifted and mixed with the dry signal to get a detuned sound. Flange is a bit different, mixing the dry signal with an identical delayed signal, which causes a phasy, comb filtered sound, but the delay time is constantly in flux, getting the swooshy sound as the nulls from the comb filter sweeping the frequency spectrum

  • i think i have an idea why many (including me) hears the delay modulation as a type of chorusy sound instead of a vibrato. it's because the left and right sides of the delay trails are affected SEPARATELY, moving agains each other in pitch, like Mr. Kemper explained, thus a chorusing effect is achieved when the two sides of the delay are heard together. this becomes a lot more evident when the two sides of the stereo delay are set to the exact same speed so that the stereo field is reduced to mono. a more "traditional" vibrato type delay mod would be if the left and right sides of the delay both were modulated TOGETHER in the exact same direction, so then the trails on their own would be merely a vibrato type detuning sound, and the chorusing would be created againt the dry guitar, and NOT by the teo delay channels modulating in opposite directions.


    maybe if there was a soft button to have the delay modulation set so the two sides were modulated identically?

  • when you set the delay to 100% wet and use quite a bit of Modulation, do you now hear the vibrato?


    Thanks for the suggestion. Yeah, it is vibrato.


    Like @andrasvermes suggested, the "chorusy" sound must be due to L and R being modulated separately and in different phase.


    It would be very nice to have the L and R modulation in phase and also it would be nice to control the depth and speed parameters. For "Edge" -kind of sounds I use quite shallow vibrato with speed around 5Hz.

  • Thank you for leaving older threads like this still active! I am so glad the modulation control is there in the delays, but I do not like on high gain tones at all, but for clean tones, absolutely stunning and beautiful! very nice to have the control option to switch it up as needed…
    :thumbup: