Digital Media!!

Questions!!

1. List how many forms of digital media surround us (you should be able to come up with at least 5

• Cell phones
• digital video
• digital television
• internet
• video game

2. What number system is digital data based on? What two digits are used to code all digital data?

Binary describes a numbering scheme in which there are only two possible values for each digit: 0 and 1. In digital data memory, storage, processing, and communications, the 0 and 1 values are sometimes called "low" and "high," respectively.

3. What is a bit? What is a byte?

A bit is a binary digit, taking a value of either 0 or 1. Binary digits are a basic unit of information storage and communication in digital.

A byte is a unit of storage capable of holding characters. in most computers a byte is equal to 8 bits. large amount of memory are known in terms of kilobytes, megabytes and gigabytes.

4. What is “sampling rate”? Find an image that explains how sampling works

Digital audio signal is its sampling rate, usually just called the sample rate. The reason why this is important is because the imagine that you had for example a recording of someone speaking, and you sampled the recording once per second. You'd end up with a lot of uneven noise. The more frequently the signal is sampled, the better the approximation to the original sound. However, the higher the sample rate the more memory is required to store the samples

5. How does Colour Depth (Color Depth) or bit depth effect the appearance of an image? Find some images to illustrate the effect.

Colour depth or Bit depth is a computer graphics term describing the number of bits used in a picture/ video. The higher the the colour depth is the clearer of the clours of the picture will be.

Low colour depth
















high colour depth


6. Colour depth effects both still and video digital media. Sampling rate only effects video but not still media. Can you explain.

For the image/ video, colour depth has the same effect to it. It doesn't matter wether or not the image is moving because they are both the same.However, Sampling rate only effects video because for the videos there are sounds and movements but the still frames doesn't.