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  2. 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 ...

  3. Noise-cancelling headphones - Wikipedia

    en.wikipedia.org/wiki/Noise-cancelling_headphones

    Noise -cancelling headphones alongside a carry case. Noise-cancelling headphones are headphones which suppress unwanted ambient sounds using active noise control. This is distinct from passive headphones which, if they reduce ambient sounds at all, use techniques such as soundproofing . Noise cancellation makes it possible to listen to audio ...

  4. Noise-induced hearing loss - Wikipedia

    en.wikipedia.org/wiki/Noise-induced_hearing_loss

    Noise-induced hearing loss ( NIHL) is a hearing impairment resulting from exposure to loud sound. People may have a loss of perception of a narrow range of frequencies or impaired perception of sound including sensitivity to sound or ringing in the ears. [1] When exposure to hazards such as noise occur at work and is associated with hearing ...

  5. Auditory masking - Wikipedia

    en.wikipedia.org/wiki/Auditory_masking

    Auditory masking. In audio signal processing, auditory masking occurs when the perception of one sound is affected by the presence of another sound. [1] Auditory masking in the frequency domain is known as simultaneous masking, frequency masking or spectral masking. Auditory masking in the time domain is known as temporal masking or non ...

  6. 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 ...

  7. It's Not Enough to be Loud, You Have to Suck to. - Wikipedia

    en.wikipedia.org/wiki/It's_Not_Enough_to_be_Loud...

    It's Not Enough to be Loud, You Have to Suck to. is the debut recording of Hullabaloo, released through their own Gawdawful Records label in 1988. According to an anecdote on the band's Facebook page, the misspelling of the final "to" in the title is intentional; the title comes from an epithet written on the wall of the bathroom in the band's practice space.

  8. Equal-loudness contour - Wikipedia

    en.wikipedia.org/wiki/Equal-loudness_contour

    Equal-loudness contour. An equal-loudness contour is a measure of sound pressure level, over the frequency spectrum, for which a listener perceives a constant loudness when presented with pure steady tones. [1] The unit of measurement for loudness levels is the phon and is arrived at by reference to equal-loudness contours.

  9. Regulators fine Citigroup $136 million in setback for CEO ...

    www.aol.com/finance/regulators-fine-citigroup...

    Citigroup will pay the OCC $75 million and the Fed $60.6 million, on top of $400 million Citigroup previously paid as part of the 2020 consent order. Fraser responded Wednesday with her own ...