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  2. Audio headset - Wikipedia

    en.wikipedia.org/wiki/Audio_headset

    The microphone arm of headsets may carry an external microphone or be of the voice tube type. External microphone designs have the microphone housed in the front end of the microphone arm. Voicetube designs are also called internal microphone design, and have the microphone housed near the earpiece, with a tube carrying sound to the microphone.

  3. Headphones - Wikipedia

    en.wikipedia.org/wiki/Headphones

    Active noise-cancelling headphones use a microphone, amplifier, and speaker to pick up, amplify, and play ambient noise in phase-reversed form; this to some extent cancels out unwanted noise from the environment without affecting the desired sound source, which is not picked up and reversed by the microphone. They require a power source ...

  4. Boundary microphone - Wikipedia

    en.wikipedia.org/wiki/Boundary_microphone

    A conventional microphone placed on, or a few inches above, a hard boundary surface will pick up the desired direct sound as well as delayed sound reflecting off the boundary surface. The direct and delayed reflected sounds will combine at the microphone to create comb filtering , with constructive and destructive interference causing peaks and ...

  5. Line level - Wikipedia

    en.wikipedia.org/wiki/Line_level

    Generally, line level signals sit in the middle of the hierarchy of signal levels in audio engineering. There are weaker signals such as those from microphones (Mic Level/Microphone Level) and instrument pickups (Instrument Level), and stronger signals, such as those used to drive headphones and loudspeakers (Speaker Level).

  6. Microphone - Wikipedia

    en.wikipedia.org/wiki/Microphone

    Contact microphones have been used to pick up the sound of a snail's heartbeat and the footsteps of ants. A portable version of this microphone has recently been developed. A throat microphone is a variant of the contact microphone that picks up speech directly from a person's throat, which it is strapped to. This lets the device be used in ...

  7. Audio feedback - Wikipedia

    en.wikipedia.org/wiki/Audio_feedback

    Block diagram of the signal-flow for a common feedback loop. [1]: 118 Audio feedback (also known as acoustic feedback, simply as feedback) is a positive feedback situation that may occur when an acoustic path exists between an audio output (for example, a loudspeaker) and its audio input (for example, a microphone or guitar pickup).

  8. 3 Minute Guide to Behind-The-Ear (BTE) Hearing Aids - AOL

    www.aol.com/lifestyle/3-minute-guide-behind-ear...

    BTEs work by picking up sound in your environment, amplifying it and piping it to your ear through the tubing to the earmold. This type of hearing aid is capable of high power output and is ...

  9. 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 ...

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