Ring Sound Wave Shaper for Compact Audio Integration
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Solution Overview
Problem
Conventional sound transducers in the automotive and aviation sectors are bulky, heavy, and difficult to integrate into limited spaces, compromising both acoustic quality and design aesthetics, while existing alternatives like DML and BMR types suffer from poor sound reproduction and high mass requirements.
Innovation Solution
A ring sound wave shaper with a thin, flexible membrane and a hybrid isodynamic design that integrates with the surrounding structure, featuring a spiral conductor track, central and circumferential elastic dampers, and dual windings in the voice coil to reduce resonances and distortion, effectively creating a point sound source with improved high-frequency transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional sound transducers are installed in automotive and aviation panels, then acoustic quality is maintained, but installation space requirements and weight increase
Solution Approach 1:
The patent transitions from conventional deep, three-dimensional speaker installations to a two-dimensional planar membrane structure. The sound transducer is implemented as a flat membrane that can be integrated into panel surfaces, eliminating the need for deep installation cavities while maintaining acoustic functionality.
Solution Approach 2:
The patent merges the sound transducer membrane with the panel structure itself. The membrane becomes an integral part of the panel surface, combining structural and acoustic functions into a single element, thereby eliminating separate installation spaces for speakers.
2Reliability
If conventional sound transducers are installed, then acoustic quality is maintained, but weight increases
Solution Approach 1:
The patent employs a thin, flexible membrane as the sound transducer element instead of conventional rigid speaker components. This membrane structure dramatically reduces weight while maintaining the ability to produce and transmit sound waves effectively.
Solution Approach 2:
The patent extracts and eliminates heavy components from conventional speaker designs, such as large magnets, deep baskets, and protective grilles, retaining only the essential membrane element that generates sound, thereby significantly reducing overall weight.
3Volume of moving object
If DML or BMR sound converters are used, then installation space is reduced, but sound reproduction quality deteriorates and mass requirements increase
Solution Approach 1:
The patent applies local quality by creating point-shaped or ring-shaped sound sources at specific locations on the membrane, rather than relying on chaotic vibrations across the entire surface. This localized sound generation improves acoustic precision while maintaining the flat membrane structure.
Solution Approach 2:
The patent uses controlled mechanical vibration of the membrane to generate sound waves, with specific vibration patterns created by voice coil actuators. This approach produces accurate sound reproduction without requiring the high mass of DML exiters or the complex structures of BMR systems.
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 solution enables efficient integration with minimal space and weight, achieving high-quality audio reproduction across the entire frequency range, including beyond 20 kHz, and reduces the need for additional speakers, thereby saving installation space, materials, and power consumption.
Implementation Method 1
a voice coil, which dips into the air gap of a magnet system and whose voice coil support is connected to the underside of the membrane
Implementation Method 2
a first elastic central guide damper and a first elastic central damper on the first elastic central guide damper
Data Source
AI summary
Disclosed is a sound transducer, which can be assembled, integrated or installed primarily in the consumer, pro audio, installation and automotive sectors on land, water and air with minimal space requirements, use of materials and weight. The transducer includes a ring sound wave shaper having a very flat, thin multi-layered, flexible membrane, which generates point-shaped or ring-shaped sound within the membrane diameter.