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  2. Phone etiquette 101: When it’s rude to be on speaker - AOL

    www.aol.com/news/phone-etiquette-101-rude...

    Don’t use speakerphone. Do not use speakerphone for calls you make in public — use headphones. This is especially true for video calls or when watching to something on your device. This ...

  3. Active noise control - Wikipedia

    en.wikipedia.org/wiki/Active_noise_control

    Noise control is an active or passive means of reducing sound emissions, often for personal comfort, environmental considerations, or legal compliance. Active noise control is sound reduction using a power source. Passive noise control is sound reduction by noise-isolating materials such as insulation, sound-absorbing tiles, or a muffler rather ...

  4. Loudspeaker acoustics - Wikipedia

    en.wikipedia.org/wiki/Loudspeaker_acoustics

    Loudspeaker acoustics is a subfield of acoustical engineering concerned with the design of loudspeakers. [1] It focuses on the reproduction of sound and the parameters involved in doing so in actual equipment. Engineers measure the performance of drivers and complete speaker systems to characterize their behavior, often in an anechoic chamber ...

  5. Why Do My Ears Itch? (And How to Make It Stop) - AOL

    www.aol.com/lifestyle/why-ears-itch-stop...

    Key Takeaways: Itchy ears are not uncommon when adjusting to hearing aids, as it takes time for the ear to adjust to the presence of a hearing aid. Other common causes of itchy ears includes ...

  6. Why sudden loud booms sometimes occur when it's very ... - AOL

    www.aol.com/weather/why-sudden-loud-booms...

    During extreme cold events, you may hear a loud boom and feel like you have experienced an earthquake. However, this event was more likely a cryoseism, also known as an ice quake or a frost quake ...

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  8. Audio feedback - Wikipedia

    en.wikipedia.org/wiki/Audio_feedback

    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 ). In this example, a signal received by the microphone is amplified and passed out ...

  9. Take 20% Off Raycon Earbuds, Headphones and Speakers Right ...

    www.aol.com/entertainment/20-off-raycon-earbuds...

    These Basic Earbuds. The Work Earbuds Classic. Raycon. For everyday wear that’s easy to take in and out, these buds are the perfect pick! See it! Get The Work Earbuds Classic (originally $120 ...