Acoustic Waveguide Compression Driver Axis Alignment
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Solution Overview
Problem
Conventional acoustic assemblies face dimensional constraints in shallow-depth environments, leading to sacrifices in acoustic quality due to the alignment of compression drivers and waveguides along a single axis, which prioritizes dimensional focus over acoustics.
Innovation Solution
An acoustic system with a waveguide aligned along a first axis and a compression driver aligned along a second axis, utilizing a finite impulse response (FIR) filter to transition sound waves from one direction to another, allowing for improved acoustical matching and sound quality by focusing on acoustics rather than dimensional constraints.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the compression driver and waveguide are aligned along a single common axis, then the dimensional constraint is satisfied, but the acoustic quality deteriorates
Solution Approach 1:
The patent introduces a second axis for the compression driver alignment, creating a multi-axis configuration instead of a single common axis. This dimensional change allows the sound wave to travel through a tube along the second axis before entering the waveguide, effectively adding a depth dimension that resolves the conflict between shallow installation requirements and acoustic quality requirements.
2Device complexity
If the compression driver and waveguide are aligned along a single common axis, then the device complexity is reduced, but the acoustic performance deteriorates
Solution Approach 1:
The patent introduces a tube as an intermediary component between the compression driver and the waveguide. This tube serves as a mediator that connects the two components along different axes, allowing the sound wave to transition from the second axis (compression driver alignment) to the first axis (waveguide alignment). The intermediary tube enables improved acoustic performance without requiring complex direct alignment between the compression driver and waveguide.
Data Source
AI summary
An acoustic system that includes an acoustic assembly and a sound system. The acoustic assembly at least includes a tube removably attached to a compression driver. Additionally, the acoustic assembly includes either a waveguide or a deflector. Either the waveguide or the deflector is also removably attached to the tube. The sound system communicates with the acoustic assembly and includes a filter. The filter includes a filter length that is based on an impulse response of the acoustic assembly. As part of the communication, the sound system sends an audio signal, which has been filtered by the filter, to the acoustic assembly. In response to the audio signal, the compression driver generates a sound wave that travels through the acoustic assembly. While traveling, the acoustic assembly transitions the sound wave from generally traveling in a first direction to a second direction.