Annular Array Earphone Speaker for Wideband Sound Balance
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Solution Overview
Problem
Existing headphones lack performance in mid to high and ultra-high bass, and may exhibit left-right sound differences due to misalignment of dynamic coil speakers.
Innovation Solution
An earphone design featuring an array frequency multiplication speaker with a large dynamic coil for mid-low frequencies, a noise reduction microphone, and multiple speaker units arranged in an annular array around the microphone, including high-frequency dynamic coil, high-frequency flat, and ceramic piezoelectric speakers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a large dynamic coil speaker is used, then mid-bass performance is strong, but mid to high and ultra-high bass performance is lacking
Solution Approach 1:
The speaker system is segmented into multiple functional units: a large dynamic coil speaker for mid-bass, and multiple high-frequency speaker units (including high-frequency dynamic coil, high-frequency flat, and ceramic piezoelectric speakers) arranged in an annular array for mid to high and ultra-high frequencies. This segmentation allows each component to specialize in its frequency range, resolving the contradiction between strong mid-bass performance and comprehensive frequency response.
Solution Approach 2:
Multiple speaker units with different frequency characteristics are merged into a single integrated speaker system. The large dynamic coil speaker handles low frequencies while the annular array of high-frequency speakers handles mid to high frequencies, combining their strengths to achieve both powerful mid-bass and extended high-frequency response simultaneously.
2Adaptability or versatility
If large dynamic coil speaker and high-frequency dynamic coil speaker are not located on the same axis, then frequency compensation is achieved, but left-right sound performance difference occurs
Solution Approach 1:
The high-frequency speaker units are arranged in an annular (circular) array around the large dynamic coil speaker, creating a symmetric configuration that eliminates left-right sound differences. This asymmetric arrangement of multiple speakers in a circular pattern ensures uniform sound distribution in all horizontal directions while maintaining frequency compensation benefits.
3Power
If multiple speaker units are arranged in an annular array, then overall sound performance and sound depth are enhanced, but device complexity increases
Solution Approach 1:
The speaker units are arranged in an annular array, transitioning from a simple linear or radial arrangement to a two-dimensional circular configuration. This dimensional change allows multiple speakers to work together in a coordinated manner, enhancing overall sound performance and creating a more immersive auditory experience while managing the complexity through systematic geometric arrangement.
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
Enhances overall sound performance with balanced left-right sound, wide frequency response, clear and natural sound quality, smooth frequency response, and high-quality sound expression.
Implementation Method 1
a large dynamic coil configured to express middle and low frequencies
Implementation Method 2
ceramic piezoelectric speaker
Data Source
AI summary
An earphone with array frequency multiplication speaker is provided, which includes an outer shell, a center of an inner side of the outer shell is provided with a hollow mounting seat. An inner side of the hollow mounting seat is provided with a large dynamic coil for expressing middle and low frequencies. A center of an upper of the hollow mounting seat is provided with a noise reduction microphone, the upper of the hollow mounting seat is provided with a plurality of speaker units located at an outside the noise reduction microphone. The plurality of multiple speaker units are arranged in an annular array with the noise reduction microphone as an axis, so as to enhance an overall sound performance of the earphone and better reflect a depth of the sound, this earphone has a wide frequency response range, clear and natural sound quality, smooth response frequency.