Sound for Interaction class 8
Audio Effects
We can only affect three things:
- Amplitude
- Time
- Frequency
Each of the effects that we will look at can affect many or just one of these properties.
Many Digital Audio Effects run in real time. Their are several different kinds of real time effects.
- DirectX/VST- 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.
Demo
Audio Compression
EQ Presentation
An Equalizers main goal is it to effect the frequency of an audio signal.
- http://www.canimi.com/webnew/audiospectruma.html
- EQ by the Octave
- Eq Primer
High Pass Filter
- A High pass filter will allow frequencies above a certain point to pass through the fliter.High-pass_filter
Low Pass Filter
- A Low Pass filter only allow frequencies below a certain frequency to pass through. Low-pass filter
Band Pass Filter
- A band pass filter is a filter the allows a range of frequencies to pass through Bandpass_filter
Simple EQ
Simple Graphic EQ
Sound Forge Graphic EQ
- notice there is one slider for each BandPass/BandCut Filter
Paragraphic Sound Forge
- The sound forge Paragraphic EQ consists of 4 parametric Equalizers, a low pass Equalizer, and a high pass EQ.
Eq Frequency Ranges http://www.recordingeq.com/EQ/req0400/OctaveEQ.htm
EQ Primer http://www.recordingwebsite.com/articles/eqprimer.php
Assign Effects
MTD2 Group Audio Effects presentations.
Your book and these links may help
http://www.harmony-central.com/Effects/audio-effects-faq-10.txt
http://www.harmony-central.com/Effects/effects-explained.html
You may also try pressing F1 (help) in soundforge and searching for you effect.
Or reading chpater 3 in the Sound Design for Interactive Media
Home Work
Sound for Interaction Voice Recording
Assign Effects You book and these links may help
http://www.harmony-central.com/Effects/audio-effects-faq-10.txt
http://www.harmony-central.com/Effects/effects-explained.html