Back-to-back speaker system for realistic acoustic field reproduction
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Solution Overview
Problem
Conventional speaker systems fail to accurately reproduce the sound of instruments and acoustic fields due to limitations in collecting and directing sound waves, leading to inferior sound quality and potential amplifier damage, and existing methods do not effectively simulate the original sound experience without restricting the listening point.
Innovation Solution
A speaker system design where left and right speakers are arranged back to back with minimal obstruction, allowing reverse phase sound to interact with normal sound, and front speakers are angled to intersect, creating a wide sound range that mimics the acoustic space of a live performance, without eliminating reverse phase sound.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If reverse phase sound is eliminated to maximum extent, then sound quality is improved, but the sound becomes different from the actual instrument sound
Solution Approach 1:
The patent converts the harmful reverse phase sound into a beneficial element by intentionally allowing it to pass through the speaker cabinet and interfere with sound from the opposite speaker. This creates a natural acoustic field that mimics actual instrument sound propagation, resolving the contradiction between sound quality and original sound characteristics.
Solution Approach 2:
Instead of eliminating reverse phase sound as conventional systems do, the patent inverts the approach by deliberately preserving and utilizing it. The back-to-back speaker arrangement ensures reverse phase sound from one speaker interferes with normal sound from the opposite speaker, creating authentic acoustic reproduction.
2Area of stationary object
If speakers are mounted in multiple directions to spread sound, then sound coverage is improved, but the sound becomes inferior to actual sound
Solution Approach 1:
The patent segments the sound reproduction function into two distinct components: normal phase sound for directional coverage and reverse phase sound for acoustic authenticity. By separating these functions and allowing them to interact naturally, the system achieves both wide sound coverage and high sound quality.
Solution Approach 2:
The patent merges normal phase sound and reverse phase sound in the acoustic field by positioning speakers back-to-back. The reverse phase sound from one speaker combines with normal sound from the opposite speaker, creating a unified acoustic output that maintains both coverage and quality.
3Measurement precision
If listening point is determined for clear sound, then sound clarity is improved, but the system restricts listener movement
Solution Approach 1:
The patent creates a universal sound reproduction system that functions effectively at multiple listening positions simultaneously. By utilizing both normal and reverse phase sound propagation, the system provides clear sound reproduction whether the listener is at the center, to the side, or at various distances, eliminating the need for a fixed listening point.
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 design enables a more realistic sound reproduction that is not limited to a specific listening point, enhancing the audio experience by producing sound waves similar to those in a live hall, suitable for indoor or outdoor use and compatible with various audio devices.
Implementation Method 1
the reverse phase sound output from one of the left and right speakers 3, 4 is interfered with the reverse normal sound output from the other of the left and right speakers 3, 4
Data Source
AI summary
The present invention is a speaker system for reproducing sound close to the actual sound of instruments or actual acoustic field. The instruments output sounds in various directions. For example, reverse phase sound is output and human voice is output in forward direction. Therefore, the speaker capable of reproducing stereophonic sound close to the original sound without limiting a listening point is required. In a speaker cabinet 5, left and right speakers 3, 4 are arranged back to back with each other to output normal phase sound and reverse phase sound from left and right. Front left and front right speakers 1, 2 are slightly facing to each other to output the sound like a voice by a point sound source. Sounds of the front speakers and left and light speakers are overlapped with each other and stereophonic sound can be reproduced.