Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Relative Motion Analysis using Rotating Axes-Problem Solving01:29

Relative Motion Analysis using Rotating Axes-Problem Solving

652
Consider a crane whose telescopic boom rotates with an angular velocity of 0.04 rad/s and angular acceleration of 0.02 rad/s2. Along with the rotation, the boom also extends linearly with a uniform speed of 5 m/s. The extension of the boom is measured at point D, which is measured with respect to the fixed point C on the other end of the boom. For the given instant, the distance between points C and D is 60 meters.
Here, in order to determine the magnitude of velocity and acceleration for point...
652
Relative Motion Analysis using Rotating Axes01:25

Relative Motion Analysis using Rotating Axes

817
Consider a component AB undergoing a linear motion. Along with a linear motion, point B also rotates around point A. To comprehend this complex movement, position vectors for both points A and B are established using a stationary reference frame.
However, to express the relative position of point B relative to point A, an additional frame of reference, denoted as x'y', is necessary. This additional frame not only translates but also rotates relative to the fixed frame, making it...
817
Relative Motion Analysis using Rotating Axes - Acceleration01:22

Relative Motion Analysis using Rotating Axes - Acceleration

692
Consider a component AB undergoing a linear motion. Along with a linear motion, point B also rotates around point A. To comprehend this complex movement, position vectors for both points A and B are established using a stationary reference frame. The absolute velocity of point B is determined by adding the absolute velocity of point A, the relative velocity of point B in the rotating frame, and the effects caused by the angular velocity within the rotating frame.
Time differentiation is...
692
Equilibrium and Balance01:15

Equilibrium and Balance

6.1K
The inner ear assumes dual functionalities of auditory perception and equilibrium maintenance. The vestibule is the organ responsible for balance. This organ contains mechanoreceptors, specifically hair cells, endowed with stereocilia, which aid in deciphering information regarding the position and motion of our heads. Two intrinsic components, the utricle and saccule, help perceive head position, while the semicircular canals track head movement. Neurological messages initiated in the...
6.1K
Rotational Motion about a Fixed Axis01:26

Rotational Motion about a Fixed Axis

1.2K
A rigid body's rotation around a fixed axis makes every point within it trace a circular path around a specific line or point. The term given to this type of spinning is defined by the angular position, symbolized by the angle θ. This angle is gauged from a static reference line to the revolving object. From this angular position, any variation is referred to as angular displacement, denoted by dθ. The extent of this displacement can be calculated in degrees, radians, or...
1.2K
Rotation with Constant Angular Acceleration - II01:16

Rotation with Constant Angular Acceleration - II

6.8K
Kinematics is the description of motion. The kinematics of rotational motion discusses the relationships between rotation angle, angular velocity, angular acceleration, and time. One can describe many things with great precision using kinematics, but kinematics does not consider causes. For example, a large angular acceleration describes a very rapid change in angular velocity without any consideration of its cause. Thus, rotational kinematics does not represent the laws of nature.
The first...
6.8K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Secondary channel estimation in spatial active noise control systems using a single moving higher order microphone.

The Journal of the Acoustical Society of America·2022
Same author

Coherence-based performance analysis on noise reduction in multichannel active noise control systems.

The Journal of the Acoustical Society of America·2020
See all related articles

Related Experiment Video

Updated: Dec 29, 2025

A Method to Study Adaptation to Left-Right Reversed Audition
07:14

A Method to Study Adaptation to Left-Right Reversed Audition

Published on: October 29, 2018

6.8K

Analytic error control methods for efficient rotation in dynamic binaural rendering of Ambisonics.

Tetsu Magariyachi1, Yuki Mitsufuji1

  • 1R&D Center, Sony Corporation, 2-10-1 Osaki, Shinagawa, Tokyo 141-8610, Japan.

The Journal of the Acoustical Society of America
|February 3, 2020
PubMed
Summary

This study introduces a method to reduce computational costs for dynamic binaural rendering of Ambisonics. By approximating the Wigner D-matrix (WDM) for vertical head rotations, realistic audio experiences become more efficient.

More Related Videos

Mapping Cortical Dynamics Using Simultaneous MEG/EEG and Anatomically-constrained Minimum-norm Estimates: an Auditory Attention Example
08:45

Mapping Cortical Dynamics Using Simultaneous MEG/EEG and Anatomically-constrained Minimum-norm Estimates: an Auditory Attention Example

Published on: October 24, 2012

15.1K
Using Unidirectional Rotations to Improve Vestibular System Asymmetry in Patients with Vestibular Dysfunction
05:02

Using Unidirectional Rotations to Improve Vestibular System Asymmetry in Patients with Vestibular Dysfunction

Published on: August 30, 2019

7.6K

Related Experiment Videos

Last Updated: Dec 29, 2025

A Method to Study Adaptation to Left-Right Reversed Audition
07:14

A Method to Study Adaptation to Left-Right Reversed Audition

Published on: October 29, 2018

6.8K
Mapping Cortical Dynamics Using Simultaneous MEG/EEG and Anatomically-constrained Minimum-norm Estimates: an Auditory Attention Example
08:45

Mapping Cortical Dynamics Using Simultaneous MEG/EEG and Anatomically-constrained Minimum-norm Estimates: an Auditory Attention Example

Published on: October 24, 2012

15.1K
Using Unidirectional Rotations to Improve Vestibular System Asymmetry in Patients with Vestibular Dysfunction
05:02

Using Unidirectional Rotations to Improve Vestibular System Asymmetry in Patients with Vestibular Dysfunction

Published on: August 30, 2019

7.6K

Area of Science:

  • Acoustics and Signal Processing
  • Computer Science and Engineering

Background:

  • Dynamic binaural rendering of Ambisonics enhances realism through precise localization and dynamic cues during head movements.
  • Spherical harmonic domain processing typically uses Wigner D-matrices (WDM) for head rotation, but vertical rotations incur high computational costs due to WDM structure.

Purpose of the Study:

  • To reduce the computational cost associated with vertical rotations in dynamic binaural rendering of Ambisonics.
  • To develop methods for approximating the Wigner D-matrix (WDM) to achieve significant computational savings.

Main Methods:

  • Approximating the Wigner D-matrix (WDM) using a banded WDM derived from a truncated power series expansion.
  • Utilizing an analytically derived upper bound for approximation error to determine optimal bandwidth.
  • Devising two methods to find the minimum bandwidth for maximum computational reduction under a specified error threshold.

Main Results:

  • Demonstrated a trade-off between approximation error and computational cost.
  • Experimental results confirm the applicability of the proposed methods for dynamic binaural rendering.
  • Significant computational cost reduction achieved for vertical rotations.

Conclusions:

  • The proposed WDM approximation method effectively reduces computational load for vertical head rotations in Ambisonics.
  • The developed techniques allow for efficient dynamic binaural rendering while maintaining a user-defined level of accuracy.
  • This research contributes to more computationally feasible and realistic immersive audio experiences.