Speaker Diffusion Member for Inaudible Sound Directivity
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Solution Overview
Problem
Existing technologies lack the ability to effectively diffuse and improve the directional characteristics of inaudible range sounds output from speakers, particularly with the advent of high resolution audio systems that utilize inaudible range sounds.
Innovation Solution
A speaker device equipped with a diffusion member on its sound emission surface that propagates both audible and inaudible range sounds, utilizing a member with specific airflow resistance values and structures to enhance the diffusion of inaudible range sounds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a speaker outputs inaudible range sound, then the sound has sharper directivity, but the listening range becomes narrower
Solution Approach 1:
A diffusion member is introduced as an intermediary component between the speaker and the listener. This diffusion member receives the inaudible range sound from the speaker and redistributes it in multiple directions, effectively expanding the listening range while preserving the sharp directivity characteristic of inaudible sounds.
Solution Approach 2:
The diffusion member transforms the sound propagation from a narrow directional beam (one-dimensional focus) into a multi-directional distribution (three-dimensional spread). By adding spatial diffusion dimensions, the listening range is expanded without sacrificing the angular precision of the original sound.
2Adaptability or versatility
If conventional acoustic lens is used to diffuse audible range sound, then the audible sound is diffused, but inaudible range sound diffusion is not achieved
Solution Approach 1:
The diffusion member is designed to handle both audible and inaudible range sounds universally. Unlike conventional acoustic lenses that are optimized for audible frequencies, this diffusion member employs a structure that effectively diffuses sound waves across the entire frequency spectrum, including the inaudible range, making it a multi-functional solution for all sound types.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The diffusion member effectively diffuses inaudible range sounds, improving their directional characteristics and ensuring a more reliable and expansive listening range for these sounds.
Implementation Method 1
a diffusion member that is provided on a sound emission surface of the speaker and diffuses the inaudible range sound output from the speaker
Implementation Method 2
diffuses the inaudible range sound output from the speaker, in which the diffusion member is a member that propagates the audible range sound and the inaudible range sound inside
Data Source
AI summary
[Task] To provide a speaker device capable of diffusing an inaudible range sound output from a speaker and improving directional characteristics of the inaudible range sound.[Solution] Provided is a speaker device including a speaker that outputs an audible range sound and an inaudible range sound, and a diffusion member that is provided on a sound emission surface of the speaker and diffuses the inaudible range sound output from the speaker, in which the diffusion member is a member that propagates the audible range sound and the inaudible range sound inside.