Multi-Speaker TWS Earphone Layout for Hi-Res Audio and Noise Reduction
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Solution Overview
Problem
Existing TWS earphones with single or dual moving-coil speakers struggle to meet the Sony high-definition audio Hires standard, particularly in high frequency sound reproduction, and fail to provide effective noise reduction in noisy environments.
Innovation Solution
A noise reducing TWS earphone design featuring multiple speakers, including a planar speaker for intermediate and high frequencies, a moving-coil speaker for intermediate and low frequencies, and a moving ironloud-speaker for ultrahigh frequencies, all aligned on a central axis, with an AI adaptive noise reduction system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a single moving-coil speaker or dual moving-coil speakers are used, then the device complexity is low, but the high frequency sound reproduction quality is poor and cannot meet the Sony Hires standard
Solution Approach 1:
The audio frequency range is segmented into different bands, with each speaker type (planar, moving-coil, moving iron) responsible for specific frequency ranges. This segmentation allows each speaker to optimize its performance for its designated frequency band, achieving Hires standard sound quality across the full spectrum.
Solution Approach 2:
Multiple speaker technologies (planar speaker, moving-coil speaker, and moving iron loud-speaker) are merged into a single earphone system. This combination integrates the strengths of each speaker type to achieve comprehensive frequency coverage and high-definition audio reproduction that no single speaker could achieve alone.
2Object-affected harmful factors
If traditional speaker configurations are used, then the device structure is simple, but noise reduction capability in noisy environments is insufficient
Solution Approach 1:
The patent employs multiple speakers not only for sound reproduction but also to create active noise reduction functionality. The additional speakers can generate anti-noise signals to cancel ambient noise, converting the complexity of multiple speakers into a benefit for noise reduction in noisy environments.
3Manufacturing precision
If a large moving-coil speaker is used, then the intermediate and low frequency sound performance is good, but the high frequency sound performance is poor
Solution Approach 1:
Different speaker types are assigned to different frequency ranges based on their optimal performance characteristics. The planar speaker handles high frequencies where precision is needed, the moving-coil speaker covers intermediate and low frequencies, and the moving iron loud-speaker handles ultrahigh frequencies, creating local optimization across the frequency spectrum.
Solution Approach 2:
The earphone system achieves universal frequency coverage by combining multiple speaker types, each contributing to different portions of the audio spectrum. This multi-functional approach ensures that the earphone can reproduce all frequency ranges with high quality, meeting the Hires standard across the entire audible range.
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 design achieves international Hires standard sound quality with enhanced frequency integrity, providing superior audio performance in noisy conditions through multi-speaker integration and AI noise reduction.
Implementation Method 1
an interior of the earphone is provided with a planar speaker responsible for an intermediate frequency sound and a high frequency sound
Implementation Method 2
a moving-coil speaker responsible for the intermediate frequency sound and a low frequency sound
Implementation Method 3
an interior of the earbud is provided with a moving iron loud-speaker responsible for an ultrahigh frequency sound
Data Source
AI summary
The present disclosure provides a noise reducing TWS earphone with multi-speakers including an earphone body and an earbud; where, an interior of the earphone body is provided with a planar speaker responsible for an intermediate frequency sound and a high frequency sound and a moving-coil speaker responsible for the intermediate frequency sound and a low frequency sound, an interior of the earbud is provided with a moving ironloud-speaker; a center of the planar speaker and a center of the moving-coil speaker are on the same central axis. The design of the present disclosure has reached the international Hires standard and realized an ultra-high bandwidth sound. With an AI adaptive noise reducing design, the sound performance has a stronger integrity, it can better reflect the depth of the sound and generally improve a full audio frequency performance of the earphone, and people can enjoy best sound in various noisy environments.