SECTION 4
There are 24 different Chorus Algorithms (Chorus versions), in the MIDIVERB III. Each algorithm has a different sound and simulates a different pitch based effect.
There are two major types of algorithms: Chorus and Flanging (see explanation below). Both Chorus and Flanging have 6 algorithms of mono and 6 algorithms of stereo. See Figure 6.
FIGURE 6
CHORUS ALGORITHM |
| FLANGING ALGORITHM |
| |||||
DISPLAY |
|
| DISPLAY |
|
|
| ||
Mono | Stereo | Depth |
| Mono | Stereo |
| Depth |
|
C1 | SC1 | Smallest Depth |
| F1 | SF1 | Smallest Depth |
| |
C2 | SC2 | Small Depth |
| F2 | SF2 | Small Depth |
| |
C3 | SC3 | Medium Depth |
| F3 | SF3 | Medium Depth |
| |
C4 | SC4 | Medium Depth |
| F4 | SF4 | Medium Depth |
| |
C5 | SC5 | Big Depth |
| F5 | SF5 | Big Depth |
| |
C6 | SC6 | Biggest Depth |
| F6 | SF6 | Biggest Depth |
| |
|
|
|
|
|
|
|
|
|
WHAT IS CHORUS?
As the name implies, the Chorus effect is used to make one instrument sound like two or more instruments played together. Just as a string section, with its tiny variations in tuning and timing, sounds thicker than a single violin, so does a guitar or keyboard sound bigger and more interesting when a bit of chorusing is applied.
Mono Chorus is achieved by splitting the signal into two, then slightly delaying and detuning one of the parts. In Stereo Chorus, the signal on the left will detune in one direction while the signal on the right detunes in the other direction.
WHAT IS FLANGING?
First used in the sixties, "Flanging" was achieved by the use of two tape recorders that would record and play back the same program in synchronization. By alternately slowing down one tape machine, and then the other, different phase cancellations would occur. Since the slowing down of the tape machines was done by hand pressure against the flanges of the tape supply reels, the term "Flanging" came into being.
Today, Flanging can be closely simulated by many outboard effects processors such as the MIDIVERB III. The effect of Flanging, either electronically or mechanically done, is achieved by splitting and slightly delaying one part of the signal, then varying the time delay, with an LFO (Low Frequency Oscillator). The delayed signal is then mixed back with the original signal to produce the "swishing" or "tunneling" sound. Many
28