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Description
Flashcards by Joel Smith, updated more than 1 year ago
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Created by Joel Smith
almost 9 years ago
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| Question | Answer |
| What is "ASCII"? | The American Standard Code for Information Interchange is used to represent each character, number and symbol. It has space for 128 symbols, this is enough for standard English. |
| What is a "bitmap"? | A bitmap consists of a grid of squares called pixels. Each pixel can be uniquely identified by its position in the grid (x/y coordinates) and each pixel is a single colour. |
| What is meant by the term "Colour depth"? | This is number of bits used to store each pixel’s colour is in an image. The greater it is, the more colours can be represented. |
| Define "analogue data". | An analogue signal is one which has a value that varies smoothly. |
| Define "Sampling Rate" | The number of samples taken per second and is measured in hertz (Hz). |
| Define "Bit Depth" | This refers to the number of bits in each sample, combined with the sample rate it determines the quality of the sound. |
| What is a "Sample"? | Taken at evenly spaced time intervals and represented as numerical values when digitising sound. |
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