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2. 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 ...

3. Phone connector (audio) - Wikipedia

   en.wikipedia.org/wiki/Phone_connector_(audio)

   The 2.5 mm or sub-miniature sizes were similarly popularized on small portable electronics. They often appeared next to a 3.5 mm microphone jack for a remote control on-off switch on early portable tape recorders; the microphone provided with such machines had the on-off switch and used a two-pronged connector with both the 3.5 and 2.5 mm plugs.

4. Apple headphones - Wikipedia

   en.wikipedia.org/wiki/Apple_headphones

   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 ...

5. Microphone connector - Wikipedia

   en.wikipedia.org/wiki/Microphone_connector

   Photo: 2.5 mm mono (TS), 3.5 mm mono and stereo (TRS), and 1 ⁄ 4 inch (6.4 mm) stereo (TRS) phone connectors The most common microphone connector in consumer use is the venerable phone connector, in 1 ⁄ 4 inch (6.4 mm), 3.5 mm, and 2.5 mm sizes, and in both mono and stereo configurations.

6. Sound-powered telephone - Wikipedia

   en.wikipedia.org/wiki/Sound-powered_telephone

   The microphone transducer converts sound pressure from a user's voice into an electric current, which is then converted back to sound by a transducer at the receiver nodes. The most significant distinction between ordinary telephones and sound-powered telephones is in the operation of the microphone.

7. Microphone blocker - Wikipedia

   en.wikipedia.org/wiki/Microphone_blocker

   Microphone blockers disable the internal microphone by tricking the device into believing an external microphone is connected. [7] A 3.5 mm microphone blocker with just TS channel is enough to disconnect the internal microphone, but most commercial microphone blockers have TRRS connections which in theory makes them headset blockers that in ...