The document discusses several audio effects: reverberation, distortion, delay, wah-wah, phaser, echo, and chorus. Reverberation causes sound to persist after the original sound is removed. Distortion adds "bite", "grit", and "crunch" to electric guitar or bass tones. Delay records and repeats an input signal after a period of time. Wah-wah uses a moving filter controlled by an LFO. Phaser combines phase-shifted signals with the original. Echo repeats audio softer over time. Chorus converges similar sounds with nearly identical pitch into one sound. Examples of songs using effects are provided.

1. EFFECTS PRESENTATION

2. REVERBERATION
 Reverberation is the persistence of sound in a particular space after the
original sound is removed.
 A good example of a song including Reverberation is guilt by Nero.
Nero-Guilt
Dry Drum Drum with reverberation

3. DISTORTION
 Distortion (guitar): Guitar distortion is an effect applied to the electric
guitar, the electric bass, and other electronic instruments, giving the
instrument's tone more "bite", "grit", "crunch" and sustain. It is used
across a wide range of musical genres, from the subtle overdrive used in
some forms of the Blues to the hard-edged distortion featured in hard
rock, punk rock, and heavy metal.

4. EXAMPLE OF DISTORTION
Red Hot Chillie Peppers- Around
the world is good example of a
song that contains Distortion
Dry Guitar Guitar with Distortion

5. DELAY
 Delay is an audio effect which records an input signal to an audio
storage medium, and then plays it back after a period of time. The
delayed signal may either be played back multiple times, or played back
into the recording again, to create the sound of a repeating, decaying echo.

6. EXAMPLES OF DELAY
Welcome to the jungle by Guns N’ Roses is a good example as it has
delay in the intro

7. WAH-WAH
 This effect uses a moving bandpass filter to create its sound. A low
frequency oscillator (LFO) is used to control the movement of the filter
throughout the frequency spectrum.
 The WahWah effect automatically adjusts the phase of the left and
right channels when given a stereo recording, so that the effect seems to
travel across the speakers.

8. PHASER
 The name "Phaser" comes from "Phase Shifter", because it works by
combining phase-shifted signals with the original signal. The movement of
the phase-shifted signals is controlled using a Low Frequency Oscillator
(LFO).

9. ECHO
 A simple delay line.
 This effect repeats the audio you have selected again and again, softer each
time. There is a fixed time delay between each repeat.
 The Echo effect is very simple and is not intended to be used in place of a
Reverb effect, which simulates the sound of a room, concert hall, stage, or
other natural environment. Audacity for MacOS and Windows comes with
Gverb, a free LASPA Reverb plug-in.

10. CHORUS
 In music, a chorus effect (sometimes chorusing or chorused effect) occurs
when individual sounds with roughly the same timbre and nearly (but
never exactly) the same pitch converge and are perceived as one. While
similar sounds coming from multiple sources can occur naturally (as in the
case of a choir or string orchestra), it can also be simulated using an
electronic effects unit or signal processing device.