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  2. Colors of noise - Wikipedia

    en.wikipedia.org/wiki/Colors_of_noise

    The color names for these different types of sounds are derived from a loose analogy between the spectrum of frequencies of sound wave present in the sound (as shown in the blue diagrams) and the equivalent spectrum of light wave frequencies.

  3. Audio frequency - Wikipedia

    en.wikipedia.org/wiki/Audio_frequency

    In general, frequency components of a sound determine its "color", its timbre. When speaking about the frequency (in singular) of a sound, it means the property that most determines its pitch. [6] Higher pitches have higher frequency, and lower pitches are lower frequency. The frequencies an ear can hear are limited to a specific range of ...

  4. Doctors Say This Type Of Noise Is Best For Deep Sleep - AOL

    www.aol.com/doctors-type-noise-best-deep...

    “It has 20 different fan sounds and settings with frequencies that aren’t too intense, and it feels relaxing when I shut my eyes.” $49.95 at Amazon Sound+Sleep Special Edition White Noise ...

  5. File:Map of The Sound frequencies.png - Wikipedia

    en.wikipedia.org/wiki/File:Map_of_The_Sound...

    Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Donate

  6. Harmonic series (music) - Wikipedia

    en.wikipedia.org/wiki/Harmonic_series_(music)

    The fourth harmonic vibrates at four times the frequency of the fundamental and sounds a perfect fourth above the third harmonic (two octaves above the fundamental). Double the harmonic number means double the frequency (which sounds an octave higher). An illustration in musical notation of the harmonic series (on C) up to the 20th harmonic.

  7. Audiogram - Wikipedia

    en.wikipedia.org/wiki/Audiogram

    They are not the same as equal-loudness contours, which are a set of curves representing equal loudness at different levels, as well as at the threshold of hearing, in absolute terms measured in dB SPL (sound pressure level). The frequencies displayed on the audiogram are octaves, which represent a doubling in frequency (e.g., 250 Hz, 500 Hz ...

  8. Frequency - Wikipedia

    en.wikipedia.org/wiki/Frequency

    In general, frequency components of a sound determine its "color", its timbre. When speaking about the frequency (in singular) of a sound, it means the property that most determines its pitch. [11] The frequencies an ear can hear are limited to a specific range of frequencies.

  9. Hearing range - Wikipedia

    en.wikipedia.org/wiki/Hearing_range

    The ear's shape also allows the sound to be heard more accurately. Many breeds often have upright and curved ears, which direct and amplify sounds. As dogs hear higher frequency sounds than humans, they have a different acoustic perception of the world. [24] Sounds that seem loud to humans often emit high-frequency tones that can scare away dogs.

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