2.1.4 Data Representation

Question

what does Lossy compression do to sound

Answer 1

removes the sounds in the frequency ranges that we can’t so easily hear or that least affect the perceived playback quality

Answer 2

leaves out repeated data and instead makes a note of how many times it is repeated

Answer 3

a base 2 numbering system with 2 symbols.

Answer 4

a base 6 numbering system with 6 symbols.

Answer 5

a base 10 numbering system with 10 symbols.

Answer 6

a base 4 numbering system with 4 symbols.

Answer 7

an over error.

Answer 8

an overflo error.

Answer 9

an overflow error.

Answer 10

an underflow error.

Answer 11

character set.

Answer 12

character collection.

Answer 13

character group.

Answer 14

character assemble.

Answer 15

7 bits so can provide 127 characters or symbols plus the null character (128 in total).

Answer 16

7 bits so can provide 127 characters or symbols.

Answer 17

7 bits so can provide 127 characters plus the null character (128 in total).

Answer 18

providing over 65,000 possibilities or 32 bits providing over 2 billion possibilities.

Answer 19

providing over 65,000 possibilities or 32 bits providing over 1 billion possibilities.

Answer 20

providing over 65,000 possibilities or 32 bits providing over 3 billion possibilities.

Answer 21

providing over 65,000 possibilities or 32 bits providing over 4 billion possibilities.

Answer 22

how many colours each dot can represent.

Answer 23

how many dots each dot can represent.

Answer 24

how many shades each dot can represent.

Answer 25

how many pixels each dot can represent.

Answer 26

pixel depth.

Answer 27

colour depth.

Answer 28

dot depth.

Answer 29

number of dots per unit, e.g.the number of dots per inch (usually called dots per inch or 'dpi').

Answer 30

number of pixels per unit, e.g.the number of pixels per inch (usually called dots per inch or 'dpi').

Answer 31

number of pixels per unit, e.g.the number of dots per inch (usually called dots per inch or 'dpi').

Answer 32

number of times per minute that the sound wave is measured. The higher the sample rate the more accurately the wave is represented.

Answer 33

number of times per second that the sound wave is measured. The lower the sample rate the more accurately the wave is represented.

Answer 34

number of times per second that the sound wave is measured. The high the sample rate the more accurately the wave is represented.

Answer 35

wave gap between measurements of a sound wave being taken.

Answer 36

time gap between measurements of a sound being taken.

Answer 37

time gap between measurements of a sound wave being taken.

Answer 38

number of bits used to store the value of each wave. The higher the number of bits the more accurately the value is stored.

Answer 39

number of waves used to store the value of each sample. The higher the number of bits the more accurately the value is stored.

Answer 40

number of bits used to store the value of each sample. The higher the number of bits the more accurately the value is stored.

Answer 41

the number of bits used.

Answer 42

the number of instructions used.

Answer 43

the speed of the processor.

Answer 44

an operation e.g. 'ADD' or 'SUB' or 'DIV'

Answer 45

a maths operator only e.g. 'ADD.'

Answer 46

further instructions for the CPU.

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2.1.4 Data Representation

Description

Resource summary

Question 1

Question 2

Question 3

Question 4

Question 5

Question 6

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Question 9

Question 10

Question 11

Question 12

Question 13

Question 14

Question 15

Question 16

Question 17

Question 18

Question 19

Question 20

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	Created by Lavington ICT almost 9 years ago

	Copied by david oldfield almost 9 years ago