Hz (hertz), Impedance, Input sensitivity – Philips NP1100-37B User Manual

Page 27: Interface, Ip address, Kbps, Khz (kilo hertz), Lcd (liquid crystal display), Lossless compression, Mhz (mega hertz)

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28

K

kHz (kilo Hertz)

1000Hz or 1000 cycles per second.

L

LCD (Liquid Crystal Display)

Probably the most common way to show

visual information on non-computer electronic

equipment.
Lossless compression

A system for reducing the number of data bits

(density) in a musical signal without corrupting

the original.

M

M4A

The audio file format used by Apple in their

iTunes Music Store often appears on your

system with the ‘.m4a’ filename extension. M4A

can produce better audio quality than MP3

using less physical space for the files.
MHz (Mega Hertz)

One million cycles per second.
Mono (monaural)

The operation of an amplifier in one channel

for both input and output. Can refer to an

amplifier with only one channel of amplification

or operating in bridged mode. For low-

frequency amplification applications, it provides

better phase coherence and less distortion than

stereo operation.
MP3

A file format with a sound data compression

system. MP3 is the abbreviation of Motion

Picture Experts Group 1 (or MPEG-1) Audio

Layer 3. With the MP3 format, one CD-R or

CD-RW can contain about 10 times more data

than a regular CD.
Mute

individuals is often much more restricted.

A good full-range speaker system however,

reproduces as much of this range as possible to

cover all variations. Individual drivers are limited

to reproduce only that part of the spectrum

for which they were made, so their response is

limited, but still a necessary point to consider

when designing a complete sound system.

H

Hz (Hertz)

Cycles per second, named after Heinrich Hertz.

I

Impedance

The resistance to the flow of an electric current

in a circuit. This is effectively the electrical load

that a loudspeaker presents to the amplifier

which drives it and is measured in ohms.
Input sensitivity

SPL (sound pressure level) a speaker produces,

given one watt of power, measured from a

one-meter distance at a typical input frequency

(usually 1kHz unless otherwise noted on the

speaker).
Interface

A device or protocol which facilitates the linking

of any two devices or systems; or when used as

a verb (‘to interface’), the process of linking.
IP address

An IP (Internet Protocol) address is a unique

computer address that enables electronic

devices to communicate with and identify each

other.

K

Kbps

Kilobits per second. A digital-data-rate

measurement system which is often used with

highly compressed formats such as AAC, DAB,

MP3 etc. The higher the amount, the better the

quality generally is.

EN

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