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  2. Electromagnetically induced acoustic noise - Wikipedia

    en.wikipedia.org/wiki/Electromagnetically...

    These phenomena can potentially generate vibrations of the ferromagnetic, conductive parts, coils and permanent magnets of electrical, magnetic and electromechanical device, resulting in an audible sound if the frequency of vibrations lies between 20 Hz and 20 kHz, and if the sound level is high enough to be heard (e.g. large surface of ...

  3. Microphonics - Wikipedia

    en.wikipedia.org/wiki/Microphonics

    Depending on the construction of the player the sound may acoustically couple into the record player's dust cover or other mechanical parts and cause a feedback loop into the pickup cartridge. Many In-ear monitors exhibit microphonics when headphone cables transfer vibrations due to cable movement directly to the wearers ears. [7]

  4. How to fix that annoying audio delay on your soundbar - AOL

    www.aol.com/lifestyle/fix-annoying-audio-delay...

    “It is a complicated problem,” explains Allan Devantier, vice president of audio research and development at Samsung. To their credit, though, Devantier tells me Samsung has done a lot of work ...

  5. Radio noise - Wikipedia

    en.wikipedia.org/wiki/Radio_noise

    Radio noise near in frequency to a received radio signal (in the receiver's passband) interferes (RFI) with the operation of the receiver's circuitry.The level of noise determines the maximum sensitivity and reception range of a radio receiver; if no noise were picked up with radio signals, even weak transmissions could be received at virtually any distance by making a radio receiver that had ...

  6. Noise reduction - Wikipedia

    en.wikipedia.org/wiki/Noise_reduction

    Noise reduction techniques exist for audio and images. Noise reduction algorithms may distort the signal to some degree. Noise rejection is the ability of a circuit to isolate an undesired signal component from the desired signal component, as with common-mode rejection ratio.

  7. Electromagnetic interference - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_interference

    Audio processing equipment, such as audio power amplifiers and loudspeakers. Demodulation of a high-frequency carrier wave such as an FM radio transmission. Radio frequency interference (RFI), from typically 20 kHz to an upper limit which constantly increases as technology pushes it higher.

  8. Active noise control - Wikipedia

    en.wikipedia.org/wiki/Active_noise_control

    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 than a power source. Active noise canceling is best suited for low frequencies.

  9. Feds find Worcester, Massachusetts police used force, had ...

    www.aol.com/feds-worcester-massachusetts-police...

    Investigators said they had “serious concerns” about “credible reports of sexual assault and other sexual misconduct" by the officers.