4.6/5 - (75 votes)

On audio devices like karaoke speakers, ceiling speakers, amplifier, audio mixer, power amplifier… usually have technical specifications written in English, this article Phuc Truong We would like to send you the Vietnamese translation and explanation of the meaning of those audio terms.

2-way, two way (Two-way audio): The wire structure is designed with separate transmission lines for high and low frequencies, allowing the frequencies to be transmitted at the same speed and for accurate sound. For example, 2-way speakers consist of two speakers, 1 woofer and 1 tweeter, and use a crossover circuit to reproduce the two bass, mid and high frequencies with separate speakers.
3-way (Three-way audio): The wire structure is designed with separate transmission lines for high frequency, mid frequency and low frequency to help the frequencies transmit at the same speed and give accurate sound. For example, for 3-way speakers including 3 speakers, 1 bass speaker and 1 mid-range and 1 treble speaker and using a crossover circuit to reproduce the two bass, mid and high frequencies with separate speakers.
Amplifier: Devices that increase the level of a signal. They usually increase voltage, current, or both.

A power amplifier – Amply OBT LA 1600
Analog: Is a continuous representation of sound waves. A continuous electrical signal is often represented as an oscillating wave. It can take any value within a range and change smoothly between values, in contrast to a digital signal. digital, characterized by discrete bits of information in numerical steps.
Anechoic (Silent Room): Anechoic chamber. An anechoic chamber is a room without any sound reflections.
Audio frequency: The range of sounds that the human ear can hear, typically from 20Hz to 20kHz.
Asymmetrical: Often used to describe the sound of an unbalanced, off-center device.
Aux Input (Aux input): This is a suitable input connection for both source input and microphone input from an amplifier, which can be balanced or unbalanced input.
Axis: Imaginary line/axis running from the speaker to the listener position.
Banana Plug: It is a banana-shaped connector about 0,32cm (1/8 inch) wide and about 2,54cm (1 inch) long that plugs directly into the core of the terminal block behind the speaker or amplifier.
Bandwidth. A specific frequency range.
Baffle: In each speaker, the term baffle is often used to refer to the front panel that mounts the speaker face.
Binding Post (Speaker binding post/station): The terminals on the back of speakers and amplifiers are used to connect speaker wire. These terminals come in many different shapes, from small hole wire clamps, spiral clamps, to spade connectors or banana plugs.
Bass (Low sound, low sound): Bass in the audio range with frequencies from 0Hz to 200Hz.
Bass Reflex (Speaker cabinet, bass reflex): This is a type of speaker box that uses a separate chamber or duct to enhance the bass, which is to use the resonance phenomenon of sound that you learned in the high school physics program. This phenomenon is often applied to make speaker boxes, guitars... Speakers are designed with vent holes to enhance the bass. If the vent is behind the speaker when placed near the wall, the bass will increase a lot.
Bi-amping (Bi-amping): Use 2 amplifiers to drive 2 speaker bridges. 1 bridge is the low range, and 1 bridge is the high mid range. This does not necessarily require an active crossover. The speaker just needs 2 pairs of speaker bridges.
Biwiring: is to use two pairs of speaker wires connected from an amplifier to play separately for the bass and treble ranges on one pair of speakers.
Center Channel speaker: The center speaker is used to reproduce voice, dialogue or any kind of sound mixed during the disc production process. In home theater applications, the center channel speaker is typically located directly above or below the television set. The center channel speaker serves an important role, acting as a bridge between the front left speaker and the front right speaker. It is this speaker that creates a coherent and convincing sound field for a movie.
Coaxial cable (Transfer cable): A 75 Ohm impedance cable, commonly used to connect a television to some FM or broadcast antenna systems. It is also used to connect the mechanism of a CD player or DVD player to a DA converter.
Cone (Speaker cone): A cone-shaped speaker membrane is attached to a voice coil to create vibrations in the air that help the ears perceive sound.
Condenser Microphone: Condenser microphone or electret microphone, it is widely used for speech and meetings, the device always needs to be powered from battery or from phantom power provided in amplifier.
Crossover: A passive (in a speaker cabinet) or active (in a processor) component that divides specific frequency bands to the individual drivers of each speaker system. Without a crossover, each speaker would have the entire frequency range passed through it.
Crossover Frequency: Is the frequency that the speaker's crossover system selects to feed the audio signal into the sub-speaker.
Compact Disc Transport (CD mechanism): The device reads information in binary form from the compact disc and sends it to an external unit for conversion into an analog signal.
Damping Material: Materials are equipped to increase dissipation such as glass wool, polyester padding or foam... placed in the speaker box to reduce the frequency resonance of the bass speaker cone.
DAC- Digital to Audio Converter (Digital to Analog Converter): A device that converts a digital signal sequence to an analog signal.
Decibel (dB): A measure of sound intensity. Each dB is the smallest change in sound intensity that can be detected by the human ear.
Dipolar (bipolar): It is a speaker design with pairs of opposite speakers that are calibrated to be out of phase and radiate sound in many directions. This leads to mutual cancellation between the speakers and the listener only feels the sound reflected from the walls around the listening room. This technology is often applied in "surround" speakers of home theater systems.
Diaphragm (Vibrating membrane): In a speaker, the diaphragm is driven by the voice coil. It moves and creates air waves, creating sound. The diaphragm is usually conical or dome-shaped.
Digital: Describes estimated values over discrete time intervals.
Diaphragm (Vibrating membrane): In a speaker, the diaphragm is driven by the voice coil. It moves and creates air waves, creating sound. The diaphragm is usually conical or dome-shaped.
DSP (Digital Signal Processing): The program is used to modify digital input signals with some common applications such as processing the delay time of rear speakers, calibrating subwoofers, filtering low frequencies from satellite speakers and adding effects (theater).
DTS (Digital Theater System): Is the name of the method of encoding audio channels for watching movies and listening to music. Can be up to 7 channels (6.1). This method is superior to Dolby Digital 5.1.
Equalizer (EQ): An electronic device that acts as an active filter to boost or cut a certain range of frequencies. Purposefully changing the frequency sensitivity of a circuit changes the sound. You might do this to increase the bass in a game or movie. Or to create a more balanced sound for your music.
Filter: An electrical circuit or mechanical device that removes or attenuates energy at certain frequencies while allowing other frequencies to pass.Crossover: A passive (in a speaker cabinet) or active (in a processor) component that divides specific frequency bands to the individual drivers of a speaker system. Without a crossover, each driver would have the entire frequency range passed through it.
Frequency: The number of cycles of sound repeated in a given period of time, measured in hertz or kilohertz. The ceiling value is usually 20Hz to 20K Hz with lower frequencies representing bass and higher frequencies representing treble.
Frequency Response (Frequency range, frequency response, frequency response): Is the balanced range of sound across the entire spectrum reproduced by audio equipment that the human ear can hear at the same volume level, typically from 20Hz to 20.000Hz.
Gain: In electronics, Gain is a measure of the ability of a circuit (usually an amplifier) to increase the power or amplitude of a signal from input to output. It is usually defined as the average ratio of the output signal of a system to the input signal of the same system.
HDMI (High Definition Multimedia Interface): It stands for High-Definition Multimedia Interface, which is used to transmit digital video signals from a source to a TV. The source must convert the digital signal to analog. The result is a “clean” signal that is transmitted to a TV equipped with HDMI or DVI. The HDMI signal cable can transmit both video and audio signals. The jack has 19 pins.
Hertz (Hz): The standard unit of frequency, equal to 1 cycle per second. One hertz (Hz) represents one cycle per second, 20Hz represents 20 cycles per second, and so on…
High Pass Filter: A filter designed to allow only high frequency signals to pass through, while minimizing low frequencies.
Impedance: The total amount of resistance (resistance, capacitance, inductance) in the path for an alternating current. Impedance is measured in (Ohms) and varies at different frequency thresholds.
Integrated Amplifier: Monoblock device including both preamplifier and power amplifier section.
Interconnects – Cables: Signal cables are used to connect low-level signal devices from CD players to receivers, from DVD players to receivers, from receivers to powered subwoofers, etc. Most signal cables have an anti-interference shielding structure and use RCA connectors.
Line Level: The input signal level of an amplifying device such as a preamplifier or amplifier.
Llow Pass Filter (bass filter): A filter designed to pass low-frequency frequencies while attenuating high-frequency frequencies.
Maximum Power Rating: Is the maximum power level (W) that the audio device can handle in the mid-bass range, usually at the upper end of the sub-bass speaker's frequency range (around 100 – 200Hz).
Neutral (Balanced): Balanced sound is a standard that audio and headphone brands all aim for. Balanced sound means that all three sound ranges, high, mid, low, are at the same level, helping users enjoy every detail in harmony. However, there is no headphone that is perfectly balanced, each brand has a different definition of 'balance', so sometimes a product that is balanced for one person becomes difficult to listen to for another.
Noise: Unwanted signals interfere with the original audio/video signal source.
Nominal: In home audio systems, the term nominal has two main meanings: 1-Nominal power is the minimum power the amplifier needs to drive the speakers. 2-Nominal impedance is the theoretical minimum impedance of the speaker pair.
Output (Power): The sound reproduction intensity of a pair of speakers, amplifier, power amplifier...
Overload: The system is supplied with too high a signal level. The consequences of overload can be distortion or damage to the equipment.
Passive: An amplifier circuit or device that does not have active components such as transistors or vacuum tubes, so the passive circuit does not amplify the power of the signal. There is virtually no distortion.
Phantom Power: In professional audio equipment systems, this is a method of transmitting DC electrical energy through a microphone cable to operate a microphone containing an electronic circuit. It is known as a convenient power source for microphones.
Phase): In audio, phase refers to the time relationship between two or more waves. It is especially important for two speakers in the same system to operate in phase. This means that all the speakers in the speaker system must move in and out at the same time. If the speakers are out of phase, it will cause a lack of bass or a broken stereo image.
Preamplifier: The preamplifier is the control center of the audio system. All the modulation is done here such as volume, sound balance between channels. Usually, this device has a certain level of signal amplification. An AV receiver consists of both a preamplifier and an amplifier.
Power Amplifier (Power amplifier).
Peak Power: is the highest power level of the amplifier or speaker recommended for safe operation of the equipment.
PMPO (Peak Music Power Output): Peak power is achieved at a point in time, not the continuous power of the device. Often printed on integrated systems, mini systems, or radio cassettes to create a false impression that the device has high power.
Power Hanging: The maximum safe power that the speaker can handle. However, remember that an amplifier with too little power will have a harder time pushing the speaker than an amplifier with too much power.
RCA Connector: A standard plug or jack used to connect audio or video devices. This type of plug, also known as a lotus signal jack, lotus jack – was invented by RCA Laboratories. RCA connectors are also called phono lines or jacks, even when they are used in devices that do not use a phono circuit.
RMS (Root Mean Squared, RMS Power): Is an abbreviation system used to indicate estimated power (in watts) in the audio field to evaluate the continuous output power of an amplifier or the load capacity of a speaker.
Six Channel Input: Many DVD players today have a built-in Dolby Digital sound processor with 5 independent surround outputs and a subwoofer output. To use this feature, you need a 6-input movie amplifier (one input for each surround sound channel).
Stereo: The term comes from the Greek word for solidity. A two-channel audio format designed to give the listener the illusion of three-dimensional space with stereo imaging between two pairs of speakers.
Sensitivity or SPL: A measurement of the sound pressure level measured from a distance of one meter from the loudspeaker when the loudspeaker receives a 1-Volt-2,83 Watt signal at 8 Ohms
Shielding: Keep wires or equipment free from unwanted noise.
Subwoofer: A separate bass speaker box produces deep sound that other small speakers cannot.
Toroidal Transformer: Toroidal transformers have high stability and cause little interference to surrounding circuits.
Treble): High frequency sound, treble sounds in the frequency range from above 200Hz – 20KHz.
Triamping/Triwiring: Similar to biamping and biwiring, but in speakers with 3 speaker lines (3 speakers). You need 3 pairs of speaker wires and 3 stereo amplifiers if you want to connect speakers in triaming style.
Tweeter (treble speaker): Speakers are responsible for reproducing high frequency sounds.
Valve (Tube): Electronic lights, for warm, seductive sound.
Watt (Unit of power measurement): The higher the Watt, the more powerful the speaker, but how loud the speaker is depends on the sensitivity of the speaker and the size of the listening room. See also PMPO.
Woofer: The largest speaker in a speaker cabinet, responsible for reproducing bass. In a karaoke system, the subwoofer is responsible for the booming, vibrating, and rumbling sounds. This is the range for explosions, tubas, cellos, bass, drums, and more.