5.1 surround sound 5.1 surround sound
Surround sound composed of 6 channels, including 5 discrete channels plus an independent subwoofer channel
AAD
Refers to the CD production process, recording and editing adopt analog mode (A), and storage adopts digital mode (D)
AC3
Also It's called Dolby Digital. Using 5 independent channels (front left, front right, front center, left surround and right surround) plus a subwoofer (0.1 channel) is called 5.1 channel
ADD
Refers to the CD production process, recording uses analog methods (A), editing and storage uses digital methods (D)
Amplifier power amplifier
Amplifies signals for driving The unit's electronic system
Analogue
Simulates sound waves in a non-digital form. For example, LP and tape
Balanced Connections
The positive and negative signal lines are protected by independent ground wires to prevent mutual interference
Bass
Low-frequency sound
Bass Drive Unit (Woofer) Bass unit
The unit used for bass reproduction in the speaker.
Bass Reflex
A concept in speaker design. There are guide holes on the panel of the speaker. By using the guide holes, you can get better low-frequency extension.
Bi-amping bi-amplification
Each unit of the speaker is driven by an independent amplification circuit. Therefore, a two-way system consists of two stereo amplifier circuits and two-way connecting wires connecting each unit
Bi-wiring
It means that each speaker uses two Set up speaker cables to connect. One set of wires connects to the bass and one set of wires connects to the treble
Bridging bridge connection
A way to increase power. Use one stereo amplifier as a single channel, and add a second "bridged stereo" amplifier to amplify the other channel. There is a dedicated amplifier for bridge connection
Cables
Good cables can be multi-stranded or hard-core. Some cables are directional. The arrows mark from the audio source to the power amplifier or from the power amplifier to the audio source. The purity of copper can be represented by a series of 9s. Good copper can also be represented by linear crystals and oxygen-free copper
Chassis cone
A basket or basket for installing a midrange or bass unit
Class A Amplifier
A power amplifier that amplifies both the positive and negative half cycles.
Class A power amplifier has better sound quality, but it is easy to heat up because the transistor is always working
Class B Amplifier Class B power amplifier
The positive half cycle and negative half cycle are amplified separately, and the output device is also Continuously switching power amplifiers. Class B amplifiers are less likely to heat up than class A amplifiers, but the sound is less pure.
Coloration Coloration
Any situation that is out of nature during music playback. Coloration It is undesirable. For example, rumbling bass and humming midrange
Compression compression
The situation when the air density in the box is greater than the usual standard atmospheric pressure. When the bass This compression occurs when the cone of the unit's sound moves forward.
Crossover Network
A circuit used to divide signals into different frequency bands, such as in a dual The signal is divided into low frequency and high frequency in the circuit. The frequency divider is used to distribute different frequencies to the appropriate units.
DDD
Refers to the recording, editing and Mastering is all done digitally.
Decibel (dB) Decibel
A unit that represents relative power or amplitude level
Diffraction
Refers to the sound wave continuing to propagate around the object.
Digital number
Storing the sound in a digital stream. For example, CD, DAT, DCC, etc.
Distortion Distortion
Unwanted signals added by equipment
Dolby Digital (AC3) Dolby Digital
Uses the latest surround sound technology of 5.1 channels.
Dolby Pro-Logic
An earlier surround sound mode. The four-channel signal is encoded into a two-channel signal and decoded into a left-channel signal through the processor. , center, right and surround channels, surround sound is usually produced by the two rear units.
Dolby Stereo Dolby Stereo
Developed by Dolby in the early 1970s, Dolby Stereo Dolby Surround produces 4-channel sound than stereo, with three channels in the front, the left and right channels are responsible for music and effects, the center channel is responsible for dialogue, and the surround channels are responsible for effects and atmosphere.
Dolby Surround Than Surround
An encoding method that combines the four-channel front left, front right, center and surround sound into two channels for storage and transmission, and uses the Dolby Surround decoder for decoding.
DTS (Digital Theater Systems) Digital Cinema System
A multi-channel digital surround sound system that can improve signal quality to obtain better sound effects. Used in cinemas and home theaters
Dual Mono dual single channel
The left and right channels are processed separately in the power amplifier to avoid interference
DVD Multi Functional Digital Disc
Functional Digital Disc (formerly known as Digital Video Disc) is a new video format the size of a CD disc. It has large capacity, high-quality sound and near-theater picture quality. .
Dynamic Range
The level difference between the strongest and weakest parts of the signal, expressed in decibels
Ferrofluid
A liquid containing magnetic particles contained in the magnetic gap of the unit. Used to cool the voice coil and dampen the moving parts
Frequency Frequency
Refers to the number of repetitions in a cycle, or the number of cycles per second, in Hertz.
For example, a 1000 Hz signal represents 1000 sine wave cycles per second
Frequency Range
The limit of human hearing ranges from a low frequency of about 20 Hz to 20,000 High frequencies around Hertz.
Hertz (Hz) Hertz
The unit of frequency. Refers to the number of cycles of a signal in one second
Hi-Fi High Fidelity
Hi-Fi comes from the abbreviation of English High Fidelity, which means "high fidelity" and refers to the accurate detection of sound. Playback
Tweeter tweeter unit
The speaker unit used to play back treble is generally small and placed on the top of the speaker
Home Cinema
Through the use of a special combination of audio-visual equipment, an immersive three-dimensional theater effect can be created at home. This set of equipment generally includes program sources, display equipment, power amplifiers and speakers
Impedance
Is used to refer to the resistance to alternating current. Including inductive reactance, electrical resistance and capacitive reactance
Kevlar Kevlar
A hard fabric material developed by DuPont. Used in the manufacture of body armor and marine panels. The light weight, stiffness and asymmetry make it an excellent material for making speaker cones (Kevlar? is a registered trademark of DuPont)
Midrange midrange
A complete set of units with a sound range in About 300 Hz to 4 Hz. The sound of the signal distributed through the crossover
Midband
The frequency band where most instruments and vocals are located. It is crucial for the sound to sound natural
Multi-room Hi-Fi multi-room high-fidelity sound system
An audio system with centrally placed sound sources that can be controlled and listened to in different rooms
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Nicam 丽音
A digital stereo TV sound mode that achieves CD sound quality
Ohm ohm
The unit of resistance. In the circuit, the voltage is equal to the current multiplied by the resistance value, which is called Ohm's law
Power Amplifier
The amplifier that provides the amplified signal to the speaker is the last step in power amplification. One step
Power handling power capacity
The maximum power that the speaker can withstand
Preamplifier preamplifier
The first step in power amplification Steps, including volume control, audio source selection, etc. Can be separated from the power amplifier, or can be combined with the power amplifier
Sensitivity Sensitivity
When given an input of 1 watt and 8 ohms, measured 1 meter away from the front of the speaker The sound pressure obtained is the sensitivity of the speaker. Measured in decibels
Shielding
Protecting conductors or other equipment from interference
Signal-to-noise ratio Signal-to-noise ratio
The ratio between the level of the sound signal and the level of the noise, expressed in decibels. The larger the number, the smaller the noise
Standing Wave
The wavelength and spatial size are special Related sound waves, due to the existence of standing waves, lead to the generation of resonance. In a room, the standing waves will change due to the movement of people or objects but the density of the sound
THX
A series of patents, technologies and related standards developed by the American Lucas Film Company to improve the quality of movie soundtracks. Audiovisual equipment that needs to be manufactured to strict requirements and specific specifications.
(LucasFilm? and THX? are registered trademarks of Lucas Film Company)
Treble tweeter
High-frequency sound
Tweeter tweeter unit
Unit used for treble reproduction
Watt Watt
Unit of electrical power. Refers to the power dissipated when a current of 1 ampere passes through a resistance of 1 ohm. 1 watt is equivalent to 1 joule/second of energy
Woofer bass unit
Unit for bass reproduction