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  2. Node (physics) - Wikipedia

    en.wikipedia.org/wiki/Node_(physics)

    For instance, in a vibrating guitar string, the ends of the string are nodes. By changing the position of the end node through frets, the guitarist changes the effective length of the vibrating string and thereby the note played. The opposite of a node is an anti-node, a point where the amplitude of the standing wave is at maximum. These occur ...

  3. Bode plot - Wikipedia

    en.wikipedia.org/wiki/Bode_plot

    Figure 10: Amplitude diagram of a 10th-order electronic filter plotted using a Bode plotter. The Bode plotter is an electronic instrument resembling an oscilloscope, which produces a Bode diagram, or a graph, of a circuit's voltage gain or phase shift plotted against frequency in a feedback control system or a filter. An example of this is ...

  4. Timbre - Wikipedia

    en.wikipedia.org/wiki/Timbre

    Spectrogram of the first second of an E9 suspended chord played on a Fender Stratocaster guitar. Below is the E9 suspended chord audio: In music, timbre (/ ˈ t æ m b ər, ˈ t ɪ m-, ˈ t æ̃-/), also known as tone color or tone quality (from psychoacoustics), is the perceived sound quality of a musical note, sound or tone.

  5. Regular tuning - Wikipedia

    en.wikipedia.org/wiki/Regular_tuning

    To build chords, Fripp uses "perfect intervals in fourths, fifths and octaves", so avoiding minor thirds and especially major thirds, [26] which are sharp in equal temperament tuning (in comparison to thirds in just intonation). It is a challenge to adapt conventional guitar-chords to new standard tuning, which is based on all-fifths tuning. [27]

  6. Stringed instrument tunings - Wikipedia

    en.wikipedia.org/wiki/Stringed_instrument_tunings

    (See Guitar, bass) (See Guitar, bass) Berimbau: 1 string 1 course [*] Brazil * No standard tuning, Biscernica, 5 string 5 strings 4 courses. C ♯ 3 •F ♯ 3 •B 3 •E 4 E 4: Bisernica Balkans The prim has 5 strings; there is another bisernica which has 6 strings. Bisernica, 6 string 6 strings 4 courses. E 3 •A 3 •D 4 D 4 •G 4 G 4 ...

  7. String vibration - Wikipedia

    en.wikipedia.org/wiki/String_vibration

    Vibration, standing waves in a string. The fundamental and the first 5 overtones in the harmonic series.. A vibration in a string is a wave. Resonance causes a vibrating string to produce a sound with constant frequency, i.e. constant pitch.

  8. Frequency compensation - Wikipedia

    en.wikipedia.org/wiki/Frequency_compensation

    In electronics engineering, frequency compensation is a technique used in amplifiers, and especially in amplifiers employing negative feedback.It usually has two primary goals: To avoid the unintentional creation of positive feedback, which will cause the amplifier to oscillate, and to control overshoot and ringing in the amplifier's step response.

  9. Phase margin - Wikipedia

    en.wikipedia.org/wiki/Phase_margin

    Bode plot illustrating phase margin. In electronic amplifiers, the phase margin (PM) is the difference between the phase lag φ (< 0) and -180°, for an amplifier's output signal (relative to its input) at zero dB gain - i.e. unity gain, or that the output signal has the same amplitude as the input.