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  2. 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 ...

  3. Harmonic - Wikipedia

    en.wikipedia.org/wiki/Harmonic

    Two different notations of natural harmonics on the cello. First as sounded (more common), then as fingered (easier to sightread). In physics, acoustics, and telecommunications, a harmonic is a sinusoidal wave with a frequency that is a positive integer multiple of the fundamental frequency of a periodic signal.

  4. 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.

  5. Vocal cords - Wikipedia

    en.wikipedia.org/wiki/Vocal_cords

    The fundamental frequency is influenced by the length, size, and tension of the vocal folds. This frequency averages about 125 Hz in an adult male, 210 Hz in adult females, and over 300 Hz in children. Depth-kymography [31] is an imaging method to visualize the complex horizontal and vertical movements of vocal folds.

  6. Phonemic awareness - Wikipedia

    en.wikipedia.org/wiki/Phonemic_awareness

    Phoneme isolation: which requires recognizing the individual sounds in words, for example, "Tell me the first sound you hear in the word paste" (/p/). Phoneme identity: which requires recognizing the common sound in different words, for example, "Tell me the sound that is the same in bike, boy and bell" ( /b/ ).

  7. Human voice - Wikipedia

    en.wikipedia.org/wiki/Human_voice

    The human voice frequency is specifically a part of human sound production in which the vocal folds (vocal cords) are the primary sound source. (Other sound production mechanisms produced from the same general area of the body involve the production of unvoiced consonants, clicks, whistling and whispering.)

  8. Sound - Wikipedia

    en.wikipedia.org/wiki/Sound

    Humans normally hear sound frequencies between approximately 20 Hz and 20,000 Hz (20 kHz), [18]: 382 The upper limit decreases with age. [18]: 249 Sometimes sound refers to only those vibrations with frequencies that are within the hearing range for humans [19] or sometimes it relates to a particular animal. Other species have different ranges ...

  9. Beat (acoustics) - Wikipedia

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

    Diagram of beat frequency. 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.

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