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Related Concept Videos

Sound as Pressure Waves01:17

Sound as Pressure Waves

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Sound waves, which are longitudinal waves, can be modeled as the displacement amplitude varying as a function of the spatial and temporal coordinates. As a column of the medium is displaced, its successive columns are also displaced. As the successive displacements differ relatively, a pressure difference with the surrounding pressure is created. The gauge pressure varies across the medium.
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Sound Intensity00:58

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The loudness of a sound source is related to how energetically the source is vibrating, consequently making the molecules of the propagation medium vibrate. To measure the loudness of a source, the physical quantity of interest is the intensity. This is defined as the energy emitted per unit of time per unit of area perpendicular to the sound wave's propagation direction. Since the total energy is greater if the source vibrates for a longer duration and over a larger area, dividing the...
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Sound Waves01:01

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Sound waves can be thought of as fluctuations in the pressure of a medium through which they propagate. Since the pressure also makes the medium's particles vibrate along its direction of motion, the waves can be modeled as the displacement of the medium's particles from their mean position.
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The human ear is not equally sensitive to all frequencies in the audible range. It may perceive sound waves with the same pressure but different frequencies as having different loudness. Moreover, the perception of sound waves depends on the health of an individual's ears, which decays with age. The health of one's ears may also be affected by regular exposure to loud noises.
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Resonance is produced depending on the boundary conditions imposed on a wave. Resonance can be produced in a string under tension with symmetrical boundary conditions (i.e., has a node at each end). A node is defined as a fixed point where the string does not move. The symmetrical boundary conditions result in some frequencies resonating and producing standing waves, while other frequencies interfere destructively. Sound waves can resonate in a hollow tube, and the frequencies of the sound...
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Sound waves can be modeled either as longitudinal waves, wherein the molecules of the medium oscillate around an equilibrium position, or as pressure waves. When two identical waves from the same source superimpose on each other, the combination of two crests or two troughs results in amplitude reinforcement known as constructive interference. If two identical waves, that are initially in phase, become out of phase because of different path lengths, the combination of crests with troughs...
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Constraint-Based Sound-Motion Objects in Music Performance.

Rolf Inge Godøy1,2

  • 1Department of Musicology, University of Oslo, Oslo, Norway.

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|January 7, 2022
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Summary
This summary is machine-generated.

This study introduces sound-motion objects, brief, coherent units of sound and motion in music performance. Understanding these objects and their constraints enhances music generation and practical applications.

Keywords:
constraintsintermittencymotor gestaltperformancesound objects

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Area of Science:

  • Music Performance
  • Biomechanics
  • Cognitive Science

Background:

  • Music performance involves complex interactions between sound production and body motion.
  • Sound-motion objects are identified as fundamental units in musical expression.
  • Existing research lacks a systematic framework for analyzing these multimodal units.

Purpose of the Study:

  • To present principles of constraint-based sound-motion objects in music performance.
  • To explore the role of these objects as building blocks in music.
  • To enhance understanding of generative processes in music.

Main Methods:

  • Analysis of multimodal fragments combining sound and body motion.
  • Identification of instrumental, biomechanical, and motor control constraints.
  • Conceptualization of sound-motion objects as intrinsically coherent units.

Main Results:

  • Sound-motion objects are short, coherent units of sound and motion.
  • These objects emerge from performance constraints.
  • They play a crucial role in music structure and generation.

Conclusions:

  • Constraint-based principles offer a new perspective on sound-motion objects.
  • Understanding these objects can advance music performance, improvisation, and composition.
  • This framework facilitates deeper insights into music's generative processes.