1. Effector

When playing the huqin or violin, the player often intentionally shakes the left finger of the stringed instrument on the string to make the sound slightly tremble and sound beautiful. This added sound absorption is called the effect. Another example is that the sound of a karaoke singer after passing through a reverberator becomes plump and broad, and this reverberation is also an effect.

Effects have the functions of moistening timbre and changing timbre, and the effector is an electronic instrument dedicated to producing the above effects. Its function is to change the waveform of the original sound, modulate or delay the phase of the sound wave, enhance the wave component of the sound wave and so on, and produce various special sound effects. Apply effect to timbre, which is used by many musical instruments, chorus, etc.

2. Compression

refers to the Compressor, which can compress the high level and raise the low level, and has the function of changing or amplifying the waveform. It is used to eliminate the overload or bad transient of electric guitar signal in transmission. When the level is still over-value, the built-in voltage controlled amplifier (VCA)bo is compressed, so that the sound will not be seriously distorted.

it is different from the distorter in that it provides a variety of playing timbres without distortion, and can lengthen or shorten the duration of notes, and can produce percussion or long sustain.

3. Overload

refers to OverDrive, overspeed drive and exciter. Use moderate distortion (distortion) to produce the distortion effect like wind music, and simulate the timbre of wind music. It is often used in the lead, prelude, interlude and ending of electric guitar. It can produce a warm timbre from soft and mellow to metallic.

Extended data:

Some parameters of compression effector:

1. THRESH threshold (critical level):

This parameter determines when the signal input level reaches, the compressor will start compression. You can think of it as a switching device. When the input level of the signal reaches the threshold, the signal will be compressed. Once the input level falls below the threshold, the compression will stop.

2. RATIO compression ratio:

The compression ratio determines how much compression is applied to the input level when the input level crosses the threshold to start compression. This ratio represents the ratio between the input level and the output level. Let's take the compression ratio of 2:1 as an example. At this time, the compression ratio means that every 2dB signal input level exceeding the threshold is compressed to 1dB output level.

3. ATTACK start time:

the start time determines the time it takes for the compressor to receive the compression instruction and make the compression action after the input level exceeds the threshold. This time is usually very short, and the general compressor will use milliseconds (ms) to calculate. The starting time actually determines the initial dynamics of a sound, that is, how much the "sound head" we often say is compressed.

4. RELEASE time:

Similar to the start-up time, the release time determines the time taken by the compressor to stop compression after the signal input level is lower than the threshold. Note that too short a release time will cause the "breathing" effect of sound. If the release time is too long and the compression time is too long, it will also create an extremely unnatural sound effect.