Integrated Horn Speaker Duct Structure for Multi-Band Sound
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Solution Overview
Problem
Conventional horn speakers have a limited sound reproduction range and efficiency due to the separate installation of the horn and duct, which restricts the size and length of the horn, making it difficult to achieve multi-band sound reproduction and smooth sound diffusion.
Innovation Solution
The horn speaker enclosure is designed with a primary and secondary case, featuring integrally formed horn parts that guide sound waves through a seating groove and discharge outlet, allowing for expanded sound wave propagation and improved sound quality by maximizing sound transmission and minimizing diffusion and noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the horn is installed in a separate duct, then the horn structure can be simplified, but the length and size of the horn are limited, reducing speaker efficiency
Solution Approach 1:
The patent merges the horn and duct into a single integrated structure where the horn is formed as one piece with the duct, eliminating the need for separate components. This integration allows the horn to achieve greater effective length while maintaining compact overall dimensions, directly resolving the contradiction between structural simplicity and horn length limitations.
Solution Approach 2:
The horn is nested within the duct structure, with the horn's flared section positioned inside the duct's internal volume. This nesting arrangement allows the horn to utilize the duct's internal space, effectively extending the horn's acoustic length without increasing the external footprint of the speaker assembly.
2Ease of manufacture
If the horn is installed in a separate duct, then assembly is easier, but multi-band sound reproduction is difficult to achieve
Solution Approach 1:
The integrated horn-duct structure is segmented into distinct functional zones: the horn section for high-frequency radiation, the duct section for mid-frequency guidance, and the enclosure section for low-frequency resonance. This segmentation within integration allows each zone to be optimized for its specific frequency range, enabling multi-band sound reproduction while maintaining manufacturing simplicity.
Solution Approach 2:
The integrated horn-duct structure serves multiple functions simultaneously: it acts as both the horn for high-frequency projection and the duct for acoustic guidance, while also providing structural support and defining the enclosure volume. This multi-functionality enables the single structure to support multi-band sound reproduction across different frequency ranges.
3Productivity
If the horn is installed in a separate duct, then the duct can be optimized for airflow, but sound diffusion towards the rear is not smooth
Solution Approach 1:
The integrated horn-duct structure utilizes three-dimensional spatial arrangement to guide sound waves from the diaphragm through the horn's flared section and into the duct, creating smooth sound diffusion in multiple directions including rearward propagation. The curved transitions and optimized internal geometry enable efficient sound distribution across different spatial dimensions.
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
This configuration enhances sound quality and ambience by extending the sound reproduction band, reducing distortion, and simplifying the structure for reduced production costs and easier assembly, while allowing for compact installation in confined spaces.
Implementation Method 1
a speaker unit that generates a sound wave by converting an electric signal into a sound wave signal
Implementation Method 2
the horn parts (110, 120) include a primary half section (110a) of the horn part (110) and a secondary half section (120a) of the horn part (120)
Implementation Method 3
extends the sound reproduction band, reducing distortion
Data Source
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AI summary
A horn speaker improves ambience and sound quality by minimizing the transmission of sound diffusion and noise while maximizing the transmission of source sound generated by a speaker unit. The sound emitted by the speaker unit is collected in a seating groove and discharged through a discharge outlet of the horn speaker by integrally forming a plurality of horns in primary and secondary cases of the horn speaker enclosure. A simplified structure reduces the size of the horn speaker and difficulty associated with its assembly. The reproduction band of sound can be extended by forming a horn in a duct structure and adding sound pressure by combining it with sound emitted from the resonance of the duct in forward and backward directions. The amplitude of the resonance point is reduced in the same band and consequently advantageously reduces distortion of the sound.