representing sound Flashcards
analogue and digital sounds, MIDI (9 cards)
1
Q
what is meant by ADC?
A
analogue to digital converter
2
Q
what is meant by DAC?
A
digital to analogue converter
3
Q
what does the term “sample resolution” mean?
A
number of bits allocated to each sample
4
Q
what is the sampling rate measured in?
A
hertz
5
Q
how do computers represent sound?
A
as a sequence of sounds, each of which takes a discreate value
6
Q
what is the Nyquist theorem
A
the sampling rate of the digital audio file needs to be at least twice the frequency to give an accurate representation.
7
Q
what does MIDI stand for
A
musical instrument digital interface
8
Q
what are some disadvantages of using MIDI
A
- can’t store speech
- sometimes it has a less realistic sound
9
Q
what are some advantages of using MIDI
A
- easy manipulation of music without loss of quality
- often smaller in size compared to sampling audio files
- lossless, no information loss
