Electrodynamic Loudspeaker Commutating Coil Winding
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Solution Overview
Problem
Electrodynamic loudspeakers fail to accurately reproduce the original sound of a sound event, resulting in a synthetic sound experience that differs significantly from the natural sound experience, despite advancements in high-quality loudspeakers.
Innovation Solution
An electrodynamic loudspeaker design featuring a commutating coil made of electrically conductive wire surrounding the magnet, with opposing windings connected at inflection points to enhance the electromagnetic effect, allowing for a more natural sound reproduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional electrodynamic loudspeakers are used to reproduce sound, then electrical signals can be converted into sound waves, but the sound reproduction is synthetic and differs significantly from the natural sound experience
Solution Approach 1:
The patent changes the electromagnetic parameters by introducing a commutating coil with specific winding patterns (inflection points at 180° intervals) that creates dynamic electromagnetic field variations. This modifies the electromagnetic interaction between the voice coil and permanent magnet, generating sound patterns that more closely match natural sound wave characteristics, thereby improving sound reproduction accuracy and reducing synthetic perception
Solution Approach 2:
The commutating coil creates periodic electromagnetic field changes through its winding configuration, where the electromagnetic force varies periodically during the sound reproduction process. This periodic electromagnetic action generates acoustic waves with more natural pattern formation, improving the fidelity of sound reproduction while maintaining the electrodynamic conversion function
2Measurement precision
If high-quality loudspeakers with advanced electronics are used to improve sound quality, then the reproduction quality improves, but the cost becomes exorbitantly high
Solution Approach 1:
The patent extracts and modifies only the critical electromagnetic component (the commutating coil winding pattern) rather than redesigning the entire loudspeaker system. By focusing the improvement on this specific element with its inflection point configuration, the solution achieves high sound reproduction quality without requiring expensive high-power amplifiers or complex electronic systems, thus reducing overall system cost
Solution Approach 2:
The invention achieves quality improvement through parameter changes in the electromagnetic field generation rather than through expensive components. The commutating coil's specific winding configuration creates optimized electromagnetic interactions that improve sound reproduction quality at lower system cost compared to conventional high-power amplifier approaches
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 commutating coil improves the reproduction of speech and music, making it softer and more natural, reducing the synthetic sound perception.
Implementation Method 1
the basic principle of any loudspeaker is to convert the electrical signal received from an amplifier into sound waves
Implementation Method 2
The oscillating device has at least one permanent magnet and one voice coil arranged within the permanent magnet
Data Source
AI summary
An electrodynamic loudspeaker comprising a housing, at least one magnet, each with a voice coil arranged in this in an axially moveable manner, a diaphragm and a loudspeaker frame for each magnet). The shell surface of the at least one magnet is surrounded by a commutating coil of an electrically conductive wire, which consists of at least two opposing windings coaxially surrounding the magnet. After wrapping the two opposing wire ends, these two opposing wire ends are connected into an inflection point at the point the two opposing wire ends respectively meet after each are wrapped by 180° in such a way that they are led in the opposite direction to the next inflection point, which is diametrically opposite to the previous inflection point. After the last winding formed, these two wire ends are connected to each other.