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What is covered in this session
What types of input / output do we require for Multimedia? Last session we looked a list, but this list was not exhaustive.
Scanner Resolutions
What are the different types of scanner?
What is dpi?
What is a good scanning resolution?
What are the scanning image formats?
How do you convert the scanned image format into an application format
Digital Camera Resolutions
What is the specification for a low end camera?
What is the specification for a Medium range camera?
What is the specifiction for a high end camera?
What is the difference between all of these?
What can you do with a high range camera that cannot be done with the others
- give examples?
What then is the advantage of a low end camera?
How can a high specification camera be used to take a pictue of something like
a glass vase? (What other equipment might be required?) How might you set this
up?
Web-cams Resolution
What types of web-cams are available?
What are their resolutions/properties?
What cam they be used for?
Video Codec
What is a codec?
Name 5
Types of Microphone
What types of microphone are there?
What types of audio output can they produce.
If you are recording some music from a couple of instruments and a drum and
a singer, what type of microphones might you require?
Is it better to record digitally or in analog and then convert?
Audio
List some of the non compressed audio formats?
How is audio information stored digitally?
How does audio compression work? Explain with the aid of some diagrams
What is the difference in sound quality between, analog, digital and compressed
digital?
Video Camera
Thre are many types of video format. What are they?
What is DV in/out?
What would you want both?
What is significant about DV out?
What is the transfer difference between firewire and USB2?
What are the advantages/disadvantages of firewire and USB2?
How can analog formats be incorporated into a computer?
Video cameras come in all sorts of specifications. What is the advantage of
a high end machine?
What can you do with this high end camera that cannot be done with a low end
machine?
Give an example of how you might use 2 or 3 cameras to record a scene for a
multimedia production and then "edit" them together.
Touch Screens
How can these be used in multimedia knowing that they have poor resolution,
due to using your fingers?
What type of resolution is available from a touch screen?
How might a graphics tablet be an improvement on this?
Loudspeakers
Describe 2.1, 5,1 and 7.1 for layout.
What is frequency range?
What might be a suitable system for Philip, knowing that he likes classical
music an organ music in particular?
Flash Moving a Hand
Homework Video Codecs Describe in detail how codecs (video and audio) work