Sound Flashcards
What does all data need to be for computers to deal with it:
Digital
What are some examples of analogue media:
Telephones, microphones, MIDI
What are ADCs and DACs:
Digital to analogue converters / vice versa
What do MIDI event messages record:
Pitch, length, effects, dynamics, timings with other instruments
Advantages of MIDI over digital:
Smaller, completely editable, wide range of instruments, high quality
Define sampling:
The process of converting analogue sound waves into digital sound
How do you sample:
You record the sound at set intervals, the more the better, and represent the amplitude with a binary value
How do you calculate audio file size:
Sample rate x length x sampling resolution (how much memory is allocated)
What is Nyquiysts theorem:
To faithfully recreate the analogue sample, you should sample at least twice the highest frequency
Why can it be argued that CDs are better than vinyl:
They are digital so background noise can be edited out
Define sound synthesis:
Creating a sound digitally
What do headphones/speakers/earphones output:
The analogue sound converted back from the digital sound
