ALPS ALPINE CO., LTD. (20240259748). APPARATUS AND METHOD FOR CONTROLLING SOUND FIELD simplified abstract
Contents
APPARATUS AND METHOD FOR CONTROLLING SOUND FIELD
Organization Name
Inventor(s)
APPARATUS AND METHOD FOR CONTROLLING SOUND FIELD - A simplified explanation of the abstract
This abstract first appeared for US patent application 20240259748 titled 'APPARATUS AND METHOD FOR CONTROLLING SOUND FIELD
The present disclosure introduces a filtering unit that processes input audio signals based on coefficients set for multiple audio outputs, along with a group of speakers that emit audio corresponding to the filtered signals for these outputs. The filtering unit adjusts the coefficients to ensure that sound pressures and gradients at various control points on the boundary plane of an enclosed space surrounding the speakers match the desired sound field values. By leveraging the Kirchhoff-Helmholtz integral equation, which mandates the presence of sound sources within an enclosed space, the system can create the desired sound field on the boundary plane.
- Filtering unit processes input audio signals based on coefficients for multiple audio outputs
- Speakers emit audio based on filtered signals for the different outputs
- Coefficients are adjusted to match sound pressures and gradients at control points on the boundary plane
- Desired sound field values are achieved using the Kirchhoff-Helmholtz integral equation
- System creates the desired sound field on the boundary plane of the enclosed space
Potential Applications: - Audio production studios - Home theater systems - Virtual reality environments
Problems Solved: - Achieving a desired sound field in an enclosed space - Ensuring consistent audio quality across multiple outputs
Benefits: - Enhanced audio experience - Precise sound field control - Improved immersion in audiovisual content
Commercial Applications: Title: Advanced Sound Field Control System for Immersive Audio Experiences This technology can be utilized in high-end audio systems for home entertainment, professional audio production studios, and virtual reality platforms to deliver unparalleled sound quality and immersive experiences to users.
Questions about the technology: 1. How does the filtering unit adjust coefficients to match sound pressures and gradients at control points? 2. What are the key advantages of using the Kirchhoff-Helmholtz integral equation in creating the desired sound field?
Original Abstract Submitted
the present disclosure teaches a filtering unit configured to perform filtering on input audio signals in accordance with coefficients set for a plurality of audio outputs, respectively, and a plurality of speakers configured to output audio in response to audio signals filtered for the plurality of audio outputs. the filtering unit performs the filtering on the input audio signals in accordance with the coefficients adjusted so that the sound pressures and the sound pressure gradients at a plurality of control points set on a boundary plane of an enclosed space surrounding the plurality of speakers reach values corresponding to a desired sound field. this allows producing a desired sound field on the boundary plane of the enclosed space surrounding the sound sources by making use of the properties of the kirchhoff-helmholtz integral equation that requires that the sound sources are present in an enclosed space.
