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This is the most commonly used profile, providing support for the popular Bluetooth headsets to be used with mobile phones and gaming consoles. It relies on SCO audio encoded in 64 kbit/s CVSD or PCM and a subset of AT commands from GSM 07.07 for minimal controls including the ability to ring, answer a call, hang up and adjust the volume.
In 2005, Audio-Technica developed "Uniguard", a method for making microphones resistant to radio frequency interference from cell phones, Bluetooth devices, wireless computer networks and walkie-talkies. 13 patents were involved in bringing the feature to fruition, as company engineers modified many different elements of microphone construction ...
Many wireless mobile headsets use Bluetooth technology, supported by many phones and computers, sometimes by connecting a Bluetooth adapter to a USB port. Since version 1.1 Bluetooth devices can transmit voice calls and play several music and video formats, but audio will not be played in stereo unless the cell phone or media device, and the ...
For example, when you use a mobile phone with a Bluetooth headset, the phone uses SDP to determine which Bluetooth profiles the headset can use (Headset Profile, Hands Free Profile (HFP), Advanced Audio Distribution Profile (A2DP) etc.) and the protocol multiplexer settings needed for the phone to connect to the headset using each of them.
Singer Sophia Abrahão using a handheld wireless microphone Singer Cody Simpson using a wireless microphone headset in a 2013 concert in Montreal. A wireless microphone, or cordless microphone, is a microphone without a physical cable connecting it directly to the sound recording or amplifying equipment with which it is associated.
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