EECS 1520 Chapter Notes - Chapter 3: Compression Ratio, Digital Data, Twinvq

• School: York University
• Department: Electrical Engineering and Computer Science
• Course: EECS 1520
• Professor: lew

Document Summary

Information: data that has been organized or processed in a useful manner. Data compression: reduction in the amount of space needed to store data. Bandwidth: the number of bits/bytes transferred from one place to another in a time frame. Compression ratio: size of the compressed data, divided by the original data. Lossless compression: data can be retrieved without any loss of the original info. Lossy compression: info may be lost in the process of compression. Analogy data: a continuous representation, the information is always shown (ex. Digital data: a discrete representation, breaking information up into separate elements (ex. A digital clock, only shows you the time at the moment, not all lights or data) Pulse-code modulation: variation in a signal that jumps sharply between two extremes. Reclock: act of reasserting an original digital signal before degradation occurs. Binary representation: 2 to the power of n bits = number of possible binary representations.