Transducer Surround Barometric Vent for Compact Acoustic Volume
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Solution Overview
Problem
Portable communications devices face challenges in maintaining optimal sound quality due to their low profile, which restricts the size and volume of transducer components, particularly affecting the acoustic performance of transducers.
Innovation Solution
Incorporating a barometric vent through the surround of the transducer assembly, allowing pressure equalization between chambers without increasing the frame footprint, thereby maintaining or increasing the interior volume for improved acoustic performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a barometric vent is accommodated by increasing the frame footprint with an additional pocket or structure, then the barometric vent can be formed, but the acoustic volume within the enclosure is reduced and the size of interior chambers is reduced
Solution Approach 1:
The barometric vent is stacked vertically on top of the projecting portion of the surround rather than being formed horizontally within the frame footprint. This vertical stacking approach allows the vent to be accommodated within the existing footprint dimensions, preserving the acoustic volume and interior chamber sizes while still providing the necessary pressure equalization function.
2Reliability
If the frame footprint is increased to accommodate a barometric vent structure, then pressure equalization can be achieved, but the device footprint increases
Solution Approach 1:
The barometric vent structure is merged with the existing surround and frame components by stacking it on top of the projecting portion. This integration allows the vent to share the same footprint space as the surround structure, eliminating the need for additional horizontal space and maintaining a compact device footprint while achieving pressure equalization.
3Area of stationary object
If the interior chamber volume is reduced to accommodate frame structures, then the device can be compact, but the acoustic performance of the transducer is reduced
Solution Approach 1:
By transitioning the barometric vent from a horizontal configuration to a vertical stacking arrangement, the invention preserves the interior chamber volumes and acoustic performance while maintaining device compactness. The vertical dimension provides the necessary venting function without encroaching on the horizontal footprint or reducing the acoustic volume.
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 maintains a smaller device footprint while enhancing acoustic performance by increasing the back volume chamber and enabling additional features like low-frequency performance without occupying additional space.
Implementation Method 1
a barometric vent coupled to the fixed portion to vent a pressure between the front volume chamber and the back volume chamber
Data Source
AI summary
A transducer assembly comprising: a frame positioned within an interior chamber defined by an enclosure comprising a port to an ambient environment; a surround comprising a fixed portion sealed to the frame and a movable portion dividing the interior chamber into a front volume chamber coupling a first side of the surround to the port and a back volume chamber coupled to a second side of the surround; and a barometric vent coupled to the fixed portion to vent a pressure between the front volume chamber and the back volume chamber.