Advanced Audio Coding. Type of lossy audio compression
based on MPEG-4 format. Superior to MP3 due to its
smaller file size while maintaining audio quality.
AAC format is compatible with Apple iPods and iTunes
The study of how sound is produced and reacts within
Audio Interchange File Format. Based on an uncompressed,
high-quality format used for audio files.
The measure of power or voltage given to a speaker
to magnify the decibels.
Audio Frequency (AF)
Range of sound that can be detected by human hearing
that measures between 20Hz to 20,000Hz.
Audio frequencies produced by low signals measuring
The number of bytes that can be transmitted per second.
Distorted sound created when a speaker is amplified
beyond its ability.
Unit of sound measured by the intensity of sound pressure.
Speaker component that contains two opposite-polarized
magnets to control the speaker coil. The more powerful
the magnet is the better the sound quality.
The difference of the loudest and softest sound produced
by a speaker maintaining its sound quality without
A program that converts audio files into various formats
such as AIFF to MP3.
Hardware or software that controls the audio frequencies
to enhance or diminish sound qualities.
The number of cycles produced by a signal and indicated
by Hertz (Hz).
The range of a speaker's response to high and low frequencies
and denoted by Hz to Hz +/-dB.
A single component of frequency that is determined
by the cycles per second.
Equal to 1000 Hertz.
Musical Instrument Digital Interface. Process of integrating
music instruments with computers.
MPEG Layer 3. Standard of MPEG format that has an audio
compression ratio of 10:1 compared to that of MPEG-1
(ratio 4:1) and MPEG-2 (ratio 8:1). Most popular format
used on the internet for music or voice recordings.
Custom music selection that can be created by a music
management program such as iTunes or Windows® Media
Term used to describe the process of copying or digitizing
A bass speaker designed to produce sound below 80Hz.
A speaker engineered to create high frequency sounds
from 5,000Hz to 20,000Hz.
WAVE. Lossless audio format used for high-quality recordings.
Windows® Media Audio. Audio compression format
designed to work with Windows® Media Player and
Bass speaker that produces low frequency sounds from