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Related Concept Videos

Perception of Sound Waves01:01

Perception of Sound Waves

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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.
The pitch of a sound depends on the frequency and the pressure amplitude of the source. Two sounds of the same...
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Sound as Pressure Waves01:17

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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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Hearing01:31

Hearing

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When we hear a sound, our nervous system is detecting sound waves—pressure waves of mechanical energy traveling through a medium. The frequency of the wave is perceived as pitch, while the amplitude is perceived as loudness.
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State Space Representation01:27

State Space Representation

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The frequency-domain technique, commonly used in analyzing and designing feedback control systems, is effective for linear, time-invariant systems. However, it falls short when dealing with nonlinear, time-varying, and multiple-input multiple-output systems. The time-domain or state-space approach addresses these limitations by utilizing state variables to construct simultaneous, first-order differential equations, known as state equations, for an nth-order system.
Consider an RLC circuit, a...
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Sound Intensity00:58

Sound Intensity

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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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Auditory Pathway01:15

Auditory Pathway

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Auditory pathways constitute the complex neural circuits responsible for transmitting and interpreting auditory information from the peripheral auditory system to the brain. Sound waves are initially captured by the outer ear, funneled through the ear canal, and reach the tympanic membrane (eardrum). These vibrations are transmitted via the middle ear's ossicles to the inner ear's cochlea.
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Updated: May 7, 2026

Real-Time Proxy-Control of Re-Parameterized Peripheral Signals using a Close-Loop Interface
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Accessible Fine-grained Data Representation via Spatial Audio.

Can Liu, Wenjie Jiang, Shaolun Ruan

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    |May 5, 2026
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    Summary
    This summary is machine-generated.

    Spatial audio sonification improves data accessibility for blind and low-vision individuals. Representing data values as sound direction enhances perception of fine-grained details compared to pitch-based methods.

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    Area of Science:

    • Human-Computer Interaction
    • Data Visualization
    • Auditory Displays

    Background:

    • Pitch-based sonification enhances data accessibility for blind and low-vision (BLV) individuals.
    • Pitch representations effectively convey coarse-grained data but struggle with fine-grained details like data sign and exact values.

    Purpose of the Study:

    • To propose and evaluate a spatial audio-based approach for representing quantitative data.
    • To enhance the accessibility of fine-grained data details for BLV individuals.

    Main Methods:

    • Developed a novel sonification method using sound direction in the azimuth plane to represent data values.
    • Conducted a user study with 26 participants (10 BLV) performing four data perception tasks.

    Main Results:

    • The spatial audio approach significantly outperformed pitch representation in recognizing data signs and exact values.
    • Performance was similar for data trend identification, with slightly lower accuracy for value comparison.

    Conclusions:

    • Spatial audio sonification offers superior accessibility for fine-grained data perception compared to pitch-based methods.
    • This approach expands the potential of auditory displays for data analysis by BLV users.