Microphone Sound Pipe for Flexible Mounting
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Solution Overview
Problem
Conventional microphone packages require precise placement adjacent to the sound source, limiting design flexibility and mounting options, as they rely on direct access through an aperture in the substrate or lid to receive acoustic signals effectively.
Innovation Solution
A microphone module design featuring a substrate with an aperture for sound wave passage, a lid, a housing with acoustic ports, and a sound pipe that directs sound waves to the microphone, allowing for flexible mounting and sound wave guidance from a distal location, eliminating the need for immediate adjacency to the sound source or substrate aperture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the microphone package uses direct access through substrate aperture, then sound wave reception is simple, but mounting flexibility is limited
Solution Approach 1:
The patent introduces a sound pipe that extends in a direction perpendicular to the substrate plane, allowing sound waves to reach the microphone element from a distal location rather than requiring direct access through the substrate aperture. This dimensional extension enables the microphone package to be mounted away from the sound source while maintaining effective sound reception, thereby improving mounting flexibility without significantly increasing overall structural complexity.
Solution Approach 2:
The sound pipe acts as an intermediary acoustic waveguide between the external sound environment and the microphone element. It transmits sound waves from a distance to the microphone diaphragm, eliminating the need for the microphone to be positioned immediately adjacent to the sound source or substrate aperture. This intermediary structure enables flexible mounting positions while ensuring adequate sound wave reception.
2Adaptability or versatility
If the microphone is placed far from the sound source, then mounting flexibility improves, but sound wave reception effectiveness deteriorates
Solution Approach 1:
The sound pipe extends perpendicular to the substrate plane, creating an acoustic pathway that bridges the gap between distant sound sources and the microphone element. This vertical dimension allows the microphone to be positioned away from the sound source while maintaining effective sound reception through the extended acoustic channel.
Solution Approach 2:
The sound pipe serves as an acoustic intermediary that transports sound waves from the external environment to the microphone element over extended distances. It ensures reliable sound wave reception even when the microphone is positioned far from the sound source, thereby maintaining reception effectiveness while enabling flexible placement options.
3Adaptability or versatility
If the microphone package requires adjacency to substrate aperture, then acoustic signal access is ensured, but design freedom is reduced
Solution Approach 1:
The sound pipe extends in a direction perpendicular to the substrate, creating an acoustic pathway that does not rely on direct alignment with substrate apertures. This dimensional approach allows the microphone package to be mounted in various positions and orientations while maintaining acoustic signal access through the extended pipe structure.
Solution Approach 2:
The sound pipe acts as an intermediary acoustic channel that connects the external sound environment to the microphone element without requiring direct access through substrate apertures. It facilitates acoustic signal access while enabling greater design freedom in terms of mounting position, orientation, and integration with the host system.
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 enhances flexibility in mounting the microphone module within a host system, enabling effective sound wave reception and conversion without requiring direct adjacency to the sound source or specific substrate apertures, thus expanding design and placement options.
Implementation Method 1
The pipe has an open end to receive sound waves and direct them toward the acoustic port in the housing
Data Source
AI summary
A microphone module has a substrate with an aperture to allow sound waves to pass through the substrate, a lid mounted to the substrate to define a first interior volume, a microphone mounted to the substrate within the first interior volume, and a housing coupled to the substrate and covering the aperture. The housing forms a second interior volume and includes an acoustic port configured to allow sound to enter the second interior volume. The module further includes a pipe extending from the acoustic port in the housing, and at least one exterior interface pad outside of the second interior volume. The pipe has an open end to receive sound waves and direct them toward the acoustic port in the housing. Moreover, the at least one exterior interface pad electrically couples to the microphone.