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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.
The iPhone Stereo Headset was introduced in 2007 and was bundled with the original iPhone and iPhone 3G, and featured a control capsule in-line with the left earbud's wire with a microphone and a single button, actuated by squeezing the unit, which can be programmed to control calls, presentations, music and video playback, launch Siri, or take ...
The USB Type-C Cable and Connector Specification specifies a mapping from a USB-C jack to a 4-pole TRRS jack, for the use of headsets, and supports both CTIA and OMTP (YD/T 1885–2009) modes. [79] Some devices transparently handle many jack standards, [80] [81] and there are hardware implementations of this available as components. [82]
A USB-to-serial adapter or simply USB adapter is a type of protocol converter that is used for converting USB data signals to and from serial communications standards (serial ports). Most commonly the USB data signals are converted to either RS-232 , RS-485 , RS-422 , or TTL-level UART serial data.
Røde released its first USB microphone, the Podcaster, in 2007 to cater to the growing podcasting market. This was amongst the first products of its kind to utilise an in-built analog-to-digital converter and USB connection, allowing users to plug the microphone directly into a computer without the need for an external audio interface.
A typical example of a headset used for voice chats. A headset is a headphone combined with a microphone. Headsets provide the equivalent functionality of a telephone handset with hands-free operation. Among applications for headsets, besides telephone use, are aviation, theatre or television studio intercom systems, and console or PC gaming.
The iPad is designed to be charged with a high current of 2 amps using the included 10 W USB power adapter and USB cord with a USB connector at one end and a 30-pin dock connector at the other end. While it can be charged by an older USB port from a computer, these are limited to 500 milliamps (0.5 amps).
There are also royalty-free lossy formats like Vorbis for general music and Speex and Opus used for voice recordings. When "ripping" music from CDs, many people recommend the use of lossless audio formats to preserve the CD quality in audio files on a desktop, and to transcode the music to lossy compression formats when they are copied to a ...
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