5. Parameter Reference

The effect section is much more efficient for the CPU consumption than other sections. Other sections do polyphonic processes for each voices. But the effect section mixes down voices to one signal before the process. It actually does process for only two (L/R) signals.

Example: Chorus

An example setting for the chorus effect is shown below. Adding small delay time and adding modulation makes the small pitch change. Mixing the delay signal and the original signal, the chorus effect is obtained.

Time	0.02sec	Mix	65%
Feedback	0%	Diffusion	0%
	separate	Drive	1%
LowCut	20Hz	HighCut	22000Hz
Speed	0.2Hz	Depth	10%

Example: Flanger

Flanger is a variation of chorus. Although they are similar as setting, the effects are very different. Setting the delay time fewer than chorus, the original signal interferes with the delay signal. In addition, adding feedback emphasizes the interference. The example below looks nearly the same as chorus except setting the delay time to 1/10 and adding feedback. But it sounds very different. Adding the feedback to the negative is another idea and sounds slightly different.

Time	0.002sec	Mix	50%
Feedback	+80%	Diffusion	0%
	separate	Drive	1%
LowCut	20Hz	HighCut	22000Hz
Speed	0.2Hz	Depth	10%

Example: Reverb

Reverb simulates the reverberation of the room, hall or so on. A sample setting is shown bellow. The delay time is proportional to the room size. As the speed of sound is 330-340 meter/sec (depend on the room temperature), 0.1 second means about 34 meter. Considering go and back, it represents a 17 meter room. The reflection amount is specified with the feedback amount. The reflection is not uniform and diffused by time. It is simulated with adding diffusion. The sound is absorbed to walls. The absorption amount is dependent on the frequency and typically high frequency sounds are absorbed faster than low frequency. It can be simulated with using the high cut filter.

Time	0.1sec	Mix	30%
Feedback	+80%	Diffusion	10%
	cross	Drive	1%
LowCut	100Hz	HighCut	2000Hz
Speed	0.2Hz	Depth	0%

In fact, the real reverberation is a complex process. It is difficult to simulate the real reverberation perfectly with this effect section. If you want a high quality reverb effect, you can use another reverb plugin.

Example: Modulation Delay

The next example is a space modulation delay effect. Comparing to the reverb, the reverb spreads the sounds naturally and the following setting spreads the sounds artificially. Setting the delay time long and adding the feedback, the sound refrains with decay like echoes. Adding diffusion and modulation, the echo sounds spread and diffuse with time.

Time	0.35sec	Mix	40%
Feedback	+80%	Diffusion	25%
	separate / cross	Drive	100%
LowCut	100Hz	HighCut	5000Hz
Speed	0.5Hz	Depth	10%

Example: Overdrive

The last example is an overdrive effect. Setting the mix level to 100% and increasing the drive amount distorts the input. But more interesting effects can be obtained with the feedback and filters.

An example setting is shown below. Setting the short delay time and adding the feedback is a crucial point. With this setting, the distorted sound goes and backs inside the loop. The sound character can be modified with lowcut and highcut filters. Increasing the feedback, the loop begins to oscillate by itself (like a feedback with an electric guitar and a guitar amplifier). Furthermore, moving the delay time changes the self oscillation frequency. You can try with various settings.

Time	0.005sec	Mix	100%
Feedback	+8%	Diffusion	0%
	separate	Drive	800%
LowCut	200Hz	HighCut	4000Hz
Speed	1Hz	Depth	0%