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  2. Music box - Wikipedia

    en.wikipedia.org/wiki/Music_box

    In 2019, Tevofy Technology Ltd., based in Taiwan, released the first app-controlled mechanical music box called the Muro Box, an abbreviation of "Music Robot in a Box". Unlike traditional music boxes, people do not need to punch holes to compose songs on a paper-strip music box, and there is no minimum order for making customized music box ...

  3. Ray J - Wikipedia

    en.wikipedia.org/wiki/Ray_J

    Sanctuary. Atlantic. Elektra. EastWest. Musical artist. Website. rayj .com. William Ray Norwood Jr. (born January 17, 1981), [1] known professionally as Ray J, is an American R&B singer, songwriter, television presenter, and actor. Born in McComb, Mississippi and raised in Carson, California, he is the younger brother of singer and actress Brandy.

  4. Missing fundamental - Wikipedia

    en.wikipedia.org/wiki/Missing_fundamental

    Missing fundamental. The bottom waveform is missing the fundamental frequency, 100 hertz, and the second harmonic, 200 hertz. The periodicity is nevertheless clear when compared to the full-spectrum waveform on top. The pitch being perceived with the first harmonic being absent in the waveform is called the missing fundamental phenomenon.

  5. Beat (acoustics) - Wikipedia

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

    Beat (acoustics) In acoustics, a beat is an interference pattern between two sounds of slightly different frequencies, perceived as a periodic variation in volume whose rate is the difference of the two frequencies. With tuning instruments that can produce sustained tones, beats can be readily recognized.

  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 ...

  7. Noise gate - Wikipedia

    en.wikipedia.org/wiki/Noise_gate

    An Alesis Micro Gate noise gate. A noise gate or simply gate is an electronic device or software that is used to control the volume of an audio signal. Comparable to a compressor, which attenuates signals above a threshold, such as loud attacks from the start of musical notes, noise gates attenuate signals that register below the threshold. [ 1]

  8. Sound power - Wikipedia

    en.wikipedia.org/wiki/Sound_power

    TL. v. t. e. Sound power or acoustic power is the rate at which sound energy is emitted, reflected, transmitted or received, per unit time. [ 1] It is defined [ 2] as "through a surface, the product of the sound pressure, and the component of the particle velocity, at a point on the surface in the direction normal to the surface, integrated ...

  9. Khalid concert on TODAY: What you need to know - AOL

    www.aol.com/news/khalid-concert-today-know...

    Here’s everything you need to know to attend the concert: Date: Friday, August 30. Check-in: By 5:15am (concert concludes at 9:30 a.m.) Where: 48th Street and Rockefeller Plaza (between 5th and ...