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D
• DAC (D/A)
- Digital to analog converter.
• Damping
- The reduction of the magnitude of
resonance using some sort of material.
• Damping
Factor - The ratio of rated load
impedance to the internal resistance of an
amplifier.
• DAT -
Digital Audio Tape.
• DC/DC
Converter - A group of components within
an amplifier that converts battery voltage
(DC) into AC. Increased by switching devices
and converted back to DC providing higher
voltage for amplification.
• Decade
- A measurement equal to the low pass
frequency. Ten times the high pass
frequency, which is relevant in a passive
band pass crossover.
• Decibel
(dB) - A unit of measurement for the
intensity of audio volume. The threshold of hearing is 0 dB.
• Dielectric
- Material with low electrical conductivity.
• Digital
Output - A signal that has a digital
output
form, allowing external processing before
being converted to an analog signal.
• Digital
Time Delay - A component that
electronically delays the audio signals to
provide surround type sound.
• Diode
- A semiconductor that allows the flow of
current in one direction and two terminals.
• Direct
Current (DC) - An electrical current
that flows in one direction.
•
Directional - The angle at which a
speaker disperses sound.
• Discharge
- The release of stored energy to a load.
• Dispersion
- The delivery of sound from a speaker.
• Distortion
- Sound that is limited in some way. Any
unwanted sounds found in any audio
reproduction.
• Diversity
Tuner - FM tuning adjustment utilizing
two antennas. The tuner can shift between
the two antennas for clearer reception.
• Digital
Multimeter - A device that measures
voltage, current, or resistance using a
digital display to indicate measurement.
• Dome -
An arched speaker configuration used for
tweeters.
• Door Lock
Solenoid - The name for the electric
motor that provides power to the vehicle
door locks.
• Driver
- Any speaker or audio reproduction device.
• DSP -
Digital Signal Processing - A micro-computer
chip specifically designed for signal
control.
• Dual Mode
- A configuration of an amplifier in which
the stereo speaker and mono speaker system
(typically subwoofer) are simultaneously
powered by a stereo amplifier.
• Dynamic
Noise Reduction (DNR) - A circuit that
reduces the level of high undesirable
frequencies. Similar to Dolby Noise
Reduction, DNR.
• Dynamic
Range - The difference between minimum
and maximum sound of an audio signal.
• Dynamic
Range Suppression - A signal which
boosts the minor passages without affecting
volume. |
