Related Words

Compression: 1. An increase in density and pressure in a medium, such as air, caused intermittently by the passage of a sound wave. 2. The region in either air or material in which this occurs.

Non-Lossy Compression: A form of data compression which seeks out chunks of data which are identical, replacing them with markers called keys. In this way, the file is reduced in size, and when it is decompressed . . . View Full Definition

Digital Compression: A process of translating video images into a digital code which takes up less transmission space than the original signal would have. This allows more channels per satellite transponder: typ . . . View Full Definition

Chest Compressions: Chest compressions are often used in conjunction with rescue breathing. Learn the full definition of chest compressions.

Pulse Compression Radar: Pulse-compression radars make use of specific signal processing techniques to provide most of the advantages of extremely narrow pulses widths whilst remaining within the peak power limitati . . . View Full Definition

Lossy Compression: A type of data compression which permanently discards data that humans supposedly 'cannot hear' to create much smaller audio, video and image file sizes. When the file is decompressed by the . . . View Full Definition

Compression Ratio: In an internal combustion engine, the measurement of the difference between cylinder volume at BDC and TDC. This is the ratio of the maximum-to-minimum volume within the cylinder, between th . . . View Full Definition

Compression Wave: A wave propagated by means of the compression of a fluid, such as a sound wave in air. To create sound, the opposite state of rarification alternates with the crest of every compression.

Compression Driver: Compression drivers are usually dynamic; that is, with a magnet and interacting coil arrangement, and a small diaphragm as the main transducer. These are the motor parts, also known as the d . . . View Full Definition

Compression (Audio): The process of reducing the dynamic range of a given analog audio program by making the loud parts quieter and the quiet parts louder.