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  2. Square wave - Wikipedia

    en.wikipedia.org/wiki/Square_wave

    The square wave is a special case of a pulse wave which allows arbitrary durations at minimum and maximum amplitudes. The ratio of the high period to the total period of a pulse wave is called the duty cycle. A true square wave has a 50% duty cycle (equal high and low periods).

  3. Cross sea - Wikipedia

    en.wikipedia.org/wiki/Cross_sea

    A cross sea (also referred to as a squared sea or square waves [a]) is a sea state of wind-generated ocean waves that form nonparallel wave systems. Cross seas have a large amount of directional spreading. [1] This may occur when water waves from one weather system continue despite a shift in wind. Waves generated by the new wind run at an ...

  4. Pulse-width modulation - Wikipedia

    en.wikipedia.org/wiki/Pulse-width_modulation

    Varying the duty cycle of a pulse waveform in a synthesis instrument creates useful timbral variations. Some synthesizers have a duty-cycle trimmer for their square-wave outputs, and that trimmer can be set by ear; the 50% point (true square wave) is distinctive because even-numbered harmonics essentially disappear at 50%.

  5. Pulse wave - Wikipedia

    en.wikipedia.org/wiki/Pulse_wave

    A pulse wave or pulse train or rectangular wave is a non-sinusoidal waveform that is the periodic version of the rectangular function. It is held high a percent each cycle called the duty cycle and for the remainder of each cycle is low. A duty cycle of 50% produces a square wave, a specific case of a rectangular wave. The average level of a ...

  6. Duty cycle - Wikipedia

    en.wikipedia.org/wiki/Duty_cycle

    One way to generate fairly accurate square wave signals with 1/n duty factor, where n is an integer, is to vary the duty cycle until the nth-harmonic is significantly suppressed. For audio-band signals, this can even be done "by ear"; for example, a -40 dB reduction in the 3rd harmonic corresponds to setting the duty factor to 1/3 with a ...

  7. These are the pedophile symbols you need to know to protect ...

    www.aol.com/news/2016-04-26-these-are-the...

    In March, a mother was horrified to find a pedophile symbol on a toy she bought for her daughter. Although the symbol was not intentionally placed on the toy by the company who manufactured the ...

  8. The symbolism and meaning behind different engagement ring shapes

    www.aol.com/lifestyle/symbolism-meaning-behind...

    VRAI shares what the most popular diamond shapes for engagement rings mean, plus tips to choose the best one for your partner.

  9. The Crystal Ball: Envisioning how AI will shape our world in 2025

    www.aol.com/finance/crystal-ball-envisioning-ai...

    In 2025 and beyond, voice AI will become a true and new kind of personal assistant never seen before, meaning it will rapidly evolve from being task-driven to becoming a contextually aware companion.