In music, a chorus effect occurs when individual sounds with approximately the same time and very similar pitch converge and are perceived as one. Even though similar sounds coming from multiple sources can occur naturally, like in a choir or a string orchestra, an electronic effects unit or signal processing device can also produce this effect.


UVI Thorus


Although there are many chorus effect units, only a couple of them deliver that unique sound coloration to an audio signal. One of those chorus effects in the software plugin realm is without a doubt Thorus by UVI.

Thorus is built on a state-of-the-art chorus model combined with advancements made in the development of Sparkverb and Falcon (earlier UVI plugins). It can create exceptionally deep modulation with an amazingly clear and detailed sound. Therefore, combine that with an attractive and easy-to-use interface and you’ve got a very compelling candidate for your next high-quality, go-to modulator.


Let’s start modulating.


After the initial introduction, I will try to demonstrate the abilities of this impressive effect by covering its user-friendly interface. As usual, we will go through some audio examples. Let’s start by loading a fresh instance on the newly created audio channel within Soundbridge.



Thorus provides up to 8 voices for remarkably clear and transparent chorusing. So let us go through its main parameters :

– Low Gain: Controls the level of low (pass-through) signal

– Crossover: Sets the crossover frequency between the Low (pass-through) signal and the High (chorused) signal.

– Speed: Controls the modulators rate.

–  Voices: Number of voices used for the chorusing effect.

–  Depth: Modulation depth in cents.

–  Edge: Controls the color of the chorus Around the nominal value 0. What’s more, the algorithm blends a specific amount of feedback to avoid holes in the spectrum for a rich chorus effect. When the edge is turned to -1, the effect of time-varying notches become more pronounced. On the other end, when the edge is turned to +1, the increased feedback results in noticeable time-varying resonant peaks.

–  Tone: Controls the frequency of the low-pass filter

I have prepared a couple of audio examples where we can hear the difference before and after using Thorus. Let’s first start with electric piano and after we will hear the acoustic guitar.



~El. Piano-Unprocessed

~El. Piano -Processed with Thorus

~Ac. Guitar-Unprocessed

~Ac Guitar-Processed with Thorus


Feel free to download the project here.