Audio Glossary
From impedance to LDAC — understand audio terms in minutes.
Active Noise Cancelling
Active Noise Cancellation (ANC) is a technology that uses electronic signals to "cancel sound wi...
Amplifier
A headphone amplifier, or "headphone amp" for short, is an audio device specifically designed to...
Balanced Armature
Balanced armature drivers, full name "balanced armature drive units," are miniature sound-emitti...
Balanced Output
Balanced output is an audio signal transmission method in which the signal is transmitted simult...
Bass
Low frequency refers to the portion of the sound spectrum in the lower range, typically covering...
Charging Case
The charging case is a portable storage and power supply device designed specifically for True W...
Closed-Back
Closed-back headphones are a type of headphone in which the ear cups or housings completely encl...
DAC
A DAC (Digital-to-Analog Converter) in the headphone/audio field refers to a "digital-to-analog...
Detachable Cable
"Detachable cable" refers to a headphone design where the cable connects to the earpieces or hea...
EQ
An equalizer (EQ) is an electronic device or software feature used to adjust the gain of differe...
Eartips
Ear tips, also known as earbud tips or silicone tips, are accessories that fit over the front no...
Flathead
Flat-head earphones are a classic form of earphone, referring to earphones whose driver unit is...
Frequency Response
A frequency response curve is, simply put, a "physical examination report for headphone sound."...
Harman Curve
The Harman curve is a set of target frequency response curves developed by audio experts Sean Ol...
IEM
In-Ear Monitors (IEMs) were originally professional devices designed for stage performers to hea...
Impedance
Impedance, in simple terms, is the headphone's resistance to the flow of electrical current, mea...
Isolation
Sound isolation, in the headphone and audio field, refers to the ability to physically block ext...
LDAC
LDAC is a Bluetooth audio coding technology developed by Sony, with the full name "Low-Latency A...
Leakage
Sound leakage refers to the phenomenon where, when headphones are playing audio, some sound wave...
Microphonics
"Cable noise effect" refers to the phenomenon in which mechanical vibrations caused by friction...
Midrange
Midrange refers to the frequency range in sound spanning approximately 200Hz to 2000Hz, covering...
Open-Back
Open-back headphones are a headphone design that does not seal the ear canal or enclose the ear...
Open-Ear
Open-back headphones refer to headphones whose acoustic structure is not sealed, with the rear c...
Planar Magnetic
Planar magnetic drivers are a type of headphone transducer that uses electromagnetic induction t...
Sensitivity
Sensitivity, in the realm of headphones and audio, refers to the sound pressure level a headphon...
Soundstage
The soundstage refers to the three-dimensional spatial sensation created by headphones or speake...
TWS
"True wireless" refers to a headphone form factor in which both the connection between the earbu...
Timbre
Timbre is the "fingerprint" of sound, referring to the quality that allows us to distinguish bet...
Treble
High frequency, in the headphone and audio field, typically refers to the sound band ranging fro...
aptX Lossless
aptX Lossless is a Bluetooth audio coding technology launched by Qualcomm, representing the top-...