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2. Wireless microphone - Wikipedia

   en.wikipedia.org/wiki/Wireless_microphone

   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. Also known as a radio microphone , it has a small, battery-powered radio transmitter in the microphone body, which transmits the audio signal from the ...

3. List of Bluetooth profiles - Wikipedia

   en.wikipedia.org/wiki/List_of_Bluetooth_profiles

   These systems often also implement Headset (HSP) or Hands-Free (HFP) profiles for telephone calls, which may be used separately. Each A2DP service, of possibly many, is designed to uni-directionally transfer an audio stream in up to 2 channel stereo, either to or from the Bluetooth host. [ 2 ]

4. Hands-free computing - Wikipedia

   en.wikipedia.org/wiki/Hands-free_computing

   Likewise disabled persons may find hands-free computing important in their everyday lives. Just like visually impaired have found computers useful in their lives. [1] This can range from using the tongue, lips, mouth, or movement of the head to voice activated interfaces utilizing speech recognition software and a microphone or bluetooth ...

5. Audio headset - Wikipedia

   en.wikipedia.org/wiki/Audio_headset

   General 3.5 mm computer headsets come with two 3.5 mm connectors: one connecting to the microphone jack and one connecting to the headphone/speaker jack of the computer. 3.5 mm computer headsets connect to the computer via a sound card, which converts the digital signal of the computer to an analog signal for the headset. USB computer headsets ...

6. Lavalier microphone - Wikipedia

   en.wikipedia.org/wiki/Lavalier_microphone

   A lavalier microphone mounted on a T-shirt. A lavalier microphone or lavalier (also known as a lav, lapel mic, clip mic, body mic, collar mic, neck mic or personal mic) is a small microphone used for television, theater, and public speaking applications to allow hands-free operation.

7. Best hearing aids for seniors in 2025, according to experts ...

   www.aol.com/lifestyle/hearing-aids-for-seniors...

   Other key features include Bluetooth capability, hands-free calling for iPhone users, and an easy-to-use app with a “find my hearing aid” feature. There are nine models to choose from with BTE ...