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  2. Quality (physics) - Wikipedia

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

    In the case of a homogeneous, isotropic system, the quality is proportional to the FWHM. This sense of the phrase is the precursor of the usage of the word in music theory. In music theory, quality is the number of harmonics of a fundamental frequency of an instrument (the higher the quality, the richer the sound).

  3. Sound - Wikipedia

    en.wikipedia.org/wiki/Sound

    In physics, sound is a vibration that propagates as an acoustic wave through a transmission medium such as a ... Timbre is perceived as the quality of different ...

  4. Acoustics - Wikipedia

    en.wikipedia.org/wiki/Acoustics

    Acoustics is a branch of physics that deals with the study of mechanical waves in gases, liquids, and solids including topics such as vibration, sound, ultrasound and infrasound. A scientist who works in the field of acoustics is an acoustician while someone working in the field of acoustics technology may be called an acoustical engineer .

  5. Sound quality - Wikipedia

    en.wikipedia.org/wiki/Sound_quality

    Sound quality is typically an assessment of the accuracy, fidelity, or intelligibility of audio output from an electronic device. Quality can be measured objectively, such as when tools are used to gauge the accuracy with which the device reproduces an original sound; or it can be measured subjectively, such as when human listeners respond to ...

  6. Quantum acoustics - Wikipedia

    en.wikipedia.org/wiki/Quantum_acoustics

    In physics, quantum acoustics is the study of sound under conditions such that quantum mechanical effects are relevant. For most applications, classical mechanics are sufficient to accurately describe the physics of sound. However very high frequency sounds, or sounds made at very low temperatures may be subject to quantum effects.

  7. Nonlinear acoustics - Wikipedia

    en.wikipedia.org/wiki/Nonlinear_acoustics

    Nonlinear acoustics (NLA) is a branch of physics and acoustics dealing with sound waves of sufficiently large amplitudes. Large amplitudes require using full systems of governing equations of fluid dynamics (for sound waves in liquids and gases) and elasticity (for sound waves in solids).

  8. Loudness - Wikipedia

    en.wikipedia.org/wiki/Loudness

    The horizontal axis shows frequency in Hertz. In acoustics, loudness is the subjective perception of sound pressure.More formally, it is defined as the "attribute of auditory sensation in terms of which sounds can be ordered on a scale extending from quiet to loud". [1]

  9. Q factor - Wikipedia

    en.wikipedia.org/wiki/Q_factor

    In physics and engineering, the quality factor or Q factor is a dimensionless parameter that describes how underdamped an oscillator or resonator is. It is defined as the ratio of the initial energy stored in the resonator to the energy lost in one radian of the cycle of oscillation. [ 1 ]