This document categorizes and describes common types of audio effects. There are three main categories: dynamic effects which affect amplitude, delay effects which affect sound propagation, and filter effects which affect timbre. Dynamic effects include compressors, limiters, expanders, and noise gates. Delay effects include reverb, delay, chorus, phaser, and flanger. Filter effects include high pass filters, low pass filters, band pass filters, parametric EQs, and graphic EQs. The document encourages experimenting with effects to better understand how they work.

1. CATEGORIES OF EFFECTS
A short presentation by :
Bivash Rath Attreya

2. HELLO EVERYONE
• In this presentation we are going to look at
the various kinds of audio effects and into
their general classification.
• So lets dive in 

3. Introduction…
• Audio effects are tools which are extremely
essential for music production.
• Adding audio effects in a balanced manner
can enhance the overall sound of the
song/track.
• Audio effects can change the type of
sound, make it flatter, cut out the highs or
lows , etc... They can change the dynamics of
the sound.

4. Types of Audio Effects
i. DYNAMIC EFFECTS
ii. DELAY EFFECTS
iii. FILTER EFFECTS

5. DYNAMIC EFFETCS
• These kinds of effects are related to the
amplitude of sound.
The various kinds of effects under this
category are :
• Compressors (reduces or increases the amplitude,
thereby loudness , of a particular sound sample)
• Limiters (allows signal upto a specified limit to pass
freely, if level exceeds, it brings it down to the specified
ceiling)
• Expanders (work to achieve the opposite of audio
compressors)
• Noise gates (if the signal falls below a certain specified
threshold, it cuts out the sound)

6. DELAY EFFECTS
• These effects are related to the propagation
properties of sound.
The effects under this categories are :
• Reverbs (kind of continuation of sound after original,
giving impression of sound coming from a room with a
different kind of acoustic)
• Delay ( the sound re-plays after a minute pause)
• Chorus (overlap of same sound on the original piece of
sound, leading to multiple voices)
• Phaser (there is a change in the phase of frequency which
leads to a very different sound)
• Flanger( the sound is repeated with a slight delay, and the
amount of delay changes periodically, giving it a “flanging”
effect )

7. FILTER EFFECTS
• Filter effects are related to the
tweaking in the timbre of the sound.
Some filter effects are :
• High Pass Filter (cuts off the low frequency sounds)
• Low Pass Filter (cuts off the high frequency sounds)
• Band Pass Filter(cuts off frequencies of a certain
specified range)
• Parametric EQ
• Graphic EQ

8. AND SO…
• These are some of the very basic types of audio
effects which we come across mostly.
• WORD OF ADVICE – please go into your DAW or
effect unit and have a listen to the various effects
and how they respond to changes in their specified
parameters. Listening to the effects will help a lot in
understanding them better.
• Hope, this gives you a basic concept of audio effects
and their types.
 GOOD BYE!! 