Philips WAC7505 user manual Cddb, Dhcp

CDDB

A centralized database of CDs, CD tracks, and artists on the Web, now known as Gracenote. The audio player or burner program can log on to CDDB. It uploads the ID of the CD being played, and then downloads the title, artist, and track list.

Coaxial

A single copper conductor, surrounded with a layer of insulation, covered by a surrounding copper shield and finally, an insulating jacket. An unbalanced transmission line with constant impedance. In audio, this type is commonly used for low level, line signals terminated in RCA connectors.

Compression

In audio terms, this is a process of temporarily or permanently reducing audio data for more efficient storage or transmission. A temporary reduction in file size is called ‘non-lossy’ compression, and no information is lost. A permanent reduction in file size (such as with MP3 files) is called ‘lossy’ compression, and involves discarding unnecessary information which is irretrievably lost.

D

dB (Decibel)

A unit of measure used to express relative difference in power or intensity of sound.

D

DC (direct current)

Direct current or continuous current is the constant flow of electric charge.This is typically in a conductor such as a wire. In direct current, the electric charges flow in the same direction, distinguishing it from AC (alternating current).

DHCP

DHCP stands for Dynamic Host Configuration Protocol. It is a protocol for assigning dynamic IP addresses to devices on a network.

Digital
A method to encode information using a binary	lish
code of 0s and 1s. Many wireless phones and
networks use digital technology.	Eng
Digital Audio
Digital Audio is a sound signal that has been
converted into numerical values. Digital sound	Glossary
Analog sound can only be transmitted through
can be transmitted through multiple channels.
two channels.

Duplex (half/full)

•Full duplex is the ability to send and receive data simultaneously. Duplex is synonymous with full duplex. Example: when a modem operates in full-duplex mode, it can transmit data in two directions simultaneously. In half-duplex mode it can transmit data in two directions, but not simultaneously.

E

Eco (Eco Standby)

Eco Standby is the most ‘economic’ mode of the WAC7500 and consumes less than 1W. It is ‘economic’ and environmentally friendly to use this mode during longer times of non-usage of the WAC7500.

EQ (Equalizer)

A class of electronic filter circuits designed to augment or adjust electronic or acoustic systems. Equalizers can be fixed or adjustable, active or passive. Many equalizers divide the spectrum into 3 to 12 bands.This allows each section to be either increased or decreased in amplitude without changing the response of the rest.

F

Fidelity

A term used to describe the accuracy of recording, reproduction, or general quality of audio processing.“High Fidelity” (Hi-Fi) is the goal of every designer.

EN 37