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Headphones are a pair of small loudspeaker drivers worn on or around the head over a user's ears. They are electroacoustic transducers, which convert an electrical signal to a corresponding sound. Headphones let a single user listen to an audio source privately, in contrast to a loudspeaker, which emits sound into the open air for anyone nearby ...
Headsets using this wiring are sometimes indicated by white plastic separators between the rings. [60] [59] If a CTIA headset is connected to an OMTP device, the missing ground effectively connects the speakers in series, out-of-phase. This removes the singer's voice on typical popular music recordings, which place the singers in the center.
Most 2.4 GHz Wireless Headsets come in two units, a wireless headset and a wireless base-station, which connects to your original telephone unit via the handset jack. The wireless headset communicates with the base-station via 2.4 GHz RF, and the voice signals are sent or received via the base unit to the telephone unit.
A lineman's handset typically connects via a pair of test leads, not the modular connector found on most consumer telephone equipment. The test leads will feature some combination of alligator clips (to connect to bare wires), a piercing spike or "bed-of-nails" (for insulated wires), and something designed to fit a punch block.
Most Bluetooth headsets implement both Hands-Free Profile and Headset Profile, because of the extra features in HFP for use with a mobile phone, such as last number redial, call waiting and voice dialing. The mobile phone side of an HFP link is Audio Gateway or HFP Server. The automobile side of HFP link is Car Kit or HFP Client.
Microsoft would produce headsets for at least 120,000 members of the Army Close Combat Force. [14] The contract was worth up to US$21.88 billion. [15] In September 2021, an "Adversarial Electronic Warfare and Cybersecurity Test" of IVAS was conducted. [16] In mid-October, the system's "Operational Test and fielding" was moved to 2022.
A bone conduction headset (GoldenDance brand) Bone conduction products are usually categorized into three groups: Ordinary products, such as hands-free headsets or headphones; Bone-anchored hearing aids and assistive listening devices; Specialized communication products (e.g. for underwater or high-noise environments)
The "A30 Aviation Headset" was released in 2023 as the successor to the "A20 Aviation Headset" with extended noise cancellation and less clamping force than its predecessor. It has a claimed battery life of 45 hours (using two AA batteries) or can be powered by the airplane's electrical system.