• Page
• Discussion
• View source
• History

• Main Page
• Classes
• Resources
• Community portal
• Current events
• Recent changes
• Random page
• Help
• IAM home
• IAM blogs
• Columbia home
• MediaWiki home

Contents 1 Audio Effects 1.1 Compressors 1.2 EQ 1.3 Types of audio effects 2 Music Theory Rhythm 3 Looping in Sound Forge 4 HomeWork

Audio Effects

We can only affect three thing Amplitude,Time,Frequency

Amplitude

• Mute
• Normalize

Adjust volume relative to peak or nominal level

• Fade (in/out/graphic) or Envelope
• Compressor

Reduce dynamic range. As the amplitude aproaches a threshold it is reduced by a specified by a ratio

Time

• Pitch Bend/Shift

Adjust pitch up or down by semitones or cents

• Time Stretch

Strech time with or without changing pitch

Frequency

• EQ

Adjust the amplitude of certain frequencies

• • http://www.canimi.com/webnew/audiospectruma.html
  • EQ by the Octave
  • Eq Primer

Show Reverb

Compressors

todo create demo online

EQ

todo create demo online

Types of audio effects

DirectX - non destructive real time effects like TDM but runs on CPU

DirectX and TDM effect are restricted by the amount of processing power.

TDM's run on a single dedicated processor and DirectX effects run on the CPU.

Music Theory Rhythm

Music Theory time and meter Time

• Time Signatures - wikipedia examples -ie only sorry
• Beats and measures
• Music Theory Online Lesson 4 Time Signatures
• Online Music Theory Reference

Poly Rhythms vai.com

Looping in Sound Forge

• Turn on Loop
• Mark ins and outs

HomeWork

Finish Commercial

Quiz 2 on Weds

Microphones and Audio Effects

http://imamp.colum.edu/mediawiki/index.php/Sound_for_Interaction_Voice_Recording