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  2. Back-up beeper - Wikipedia

    en.wikipedia.org/wiki/Back-up_beeper

    Back-up beepers or an observer are required by OSHA for earth-moving vehicles with an obstructed view to the rear and no one on the ground to help guide the driver. [9] OSHA regulation 29 CFR Part 1926.601(b)(4) requires "a reverse signal alarm audible above surrounding noise level", but only when the motor vehicle has "an obstructed view to the rear".

  3. Exploding head syndrome - Wikipedia

    en.wikipedia.org/wiki/Exploding_head_syndrome

    Exploding head syndrome (EHS) is an abnormal sensory perception during sleep in which a person experiences auditory hallucinations that are loud and of short duration when falling asleep or waking up. [2] [4] The noise may be frightening, typically occurs only occasionally, and is not a serious health concern. [2]

  4. Reversing (vehicle maneuver) - Wikipedia

    en.wikipedia.org/wiki/Reversing_(Vehicle_maneuver)

    Reversing (also known as backing up) is the process of driving a vehicle in the reverse direction in order to maneuver. Rear view mirrors are somewhat standard equipment for this endeavor. Reversing a vehicle is used as an intermediate step to complete a three point turn , J-turn , parallel park , or similar maneuver.

  5. Click (acoustics) - Wikipedia

    en.wikipedia.org/wiki/Click_(acoustics)

    In speech recording, click noises (not to be confused with click consonants) result from tongue movements, swallowing, mouth and saliva noises. [8] While in voice-over recordings, click noises are undesirable, they can be used as a sound effect of close-miking in ASMR and pop music, e.g. in Bad Guy (2019) by Billie Eilish .

  6. Electric vehicle warning sounds - Wikipedia

    en.wikipedia.org/.../Electric_vehicle_warning_sounds

    The 2011 Nissan Leaf was the first electric car equipped with Nissan's Vehicle Sound for Pedestrians called 'Canto'.. Electric vehicle warning sounds are sounds designed to alert pedestrians to the presence of electric drive vehicles such as hybrid electric vehicles (HEVs), plug-in hybrid electric vehicles (PHEVs), and battery electric vehicles (BEVs) travelling at low speeds.

  7. Click of death - Wikipedia

    en.wikipedia.org/wiki/Click_of_death

    Click of death is a term that had become common in the late 1990s referring to the clicking sound in disk storage systems that signals a disk drive has failed, often catastrophically. [1] The clicking sound itself arises from the unexpected movement of the disk's read/write actuator. At startup, and during use, the disk head must move correctly ...

  8. Click consonant - Wikipedia

    en.wikipedia.org/wiki/Click_consonant

    A voiceless nasal back-released velar click [ʞ] is used throughout Africa for backchanneling. This sound starts off as a typical click, but the action is reversed and it is the rear velar or uvular closure that is released, drawing in air from the throat and nasal passages.

  9. Clicking noise - Wikipedia

    en.wikipedia.org/?title=Clicking_noise&redirect=no

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