Integrated Acoustic Coupler for In-Ear Monitor Testing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current acoustic couplers for in-ear monitors (IEMs) are cumbersome, difficult to assemble, and lack practicality in studio and live performance settings due to non-standard connections and the need for putty to achieve a reliable seal, leading to inconsistent and time-consuming measurement processes.
Innovation Solution
An integrated acoustic coupler with a deformable polymer foam seat and multiple interconnected chambers to simulate the human ear, integrated with a transducer and electrical circuit, allowing for a compact, ergonomic design that connects directly to professional audio standards via a single XLR cable, eliminating the need for external components and providing a repeatable seal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional multi-component couplers are used for IEM testing, then measurement accuracy can be maintained, but device complexity and ease of operation deteriorate due to multiple components requiring assembly and non-standard connections
Solution Approach 1:
The patent combines multiple separate components (coupler body, preamplifier, power supply, cables) into a single integrated unit. The coupler housing incorporates the preamplifier circuitry and power supply internally, eliminating the need for external components and complex assembly, while maintaining measurement accuracy through preserved acoustic coupling characteristics.
Solution Approach 2:
The integrated coupler is designed to interface with standard professional audio equipment (mixers, audio analyzers) through conventional XLR connections, making it universally compatible across different testing environments. The single device performs multiple functions: acoustic coupling, signal amplification, and power supply, replacing several specialized components.
2Reliability
If putty is used to seal the coupler to the IEM, then measurement reliability improves, but ease of operation and time efficiency deteriorate due to repeated application and adjustment
Solution Approach 1:
The patent employs a disposable foam sealing element that is pre-formed and easily replaceable. Instead of reusing and reconditioning putty, the foam seal is inserted once and discarded after a single use, eliminating the time-consuming process of applying and adjusting putty while ensuring consistent sealing reliability.
Solution Approach 2:
The sealing mechanism transitions from a malleable material (putty) requiring manual shaping to a pre-formed foam structure with optimized geometric parameters. The foam's cellular structure and dimensional characteristics are engineered to provide adequate sealing without requiring adjustment, changing the sealing approach from craft-based to parameter-based.
3Measurement precision
If custom-fitted ear buds are used for each musician, then measurement accuracy improves, but adaptability deteriorates as each IEM requires separate sealing and testing procedures
Solution Approach 1:
The coupler design separates the sealing function from the measurement function. The foam seal is a standalone, replaceable component that can be quickly exchanged between different IEMs, while the measurement system remains constant. This segmentation allows each musician's custom IEM to be tested independently without affecting the overall system or requiring complex reconfiguration.
Solution Approach 2:
The foam sealing element is pre-formed with dimensions and properties optimized for creating an acoustic seal. This preliminary preparation eliminates the need for on-site shaping or adjustment when testing different IEMs, allowing sound engineers to quickly swap seals between custom-fitted ear buds while maintaining measurement accuracy.
4Measurement precision
If standard professional audio connections are not used, then measurement precision can be maintained, but ease of operation and productivity deteriorate in live performance settings
Solution Approach 1:
The integrated coupler incorporates standard XLR output connections that are universally compatible with professional audio equipment (mixers, audio analyzers, digital consoles). This universal interfacing allows the device to be quickly connected to any standard audio system in live performance environments without requiring specialized cabling or adapters, significantly improving testing productivity.
Solution Approach 2:
By integrating the preamplifier and power supply within the coupler housing, the device eliminates multiple external connections and power sources. The single XLR connection carries both audio signal and power, reducing cable clutter and setup time in fast-paced live performance settings while maintaining measurement precision.
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
Enables accurate, repeatable, and efficient testing and adjustment of IEMs in non-laboratory settings by providing a compact, ergonomic solution that maintains professional audio standards and simplifies the measurement process, ensuring reliable acoustic performance without the need for additional equipment or putty.
Implementation Method 1
The integrated acoustic coupler includes a transducer positioned in operative relationship with the first chamber and an electrical circuit connecting the transducer and the output port
Implementation Method 2
an input defining an IEM seat defined by a deformable member and into an which an IEM may be inserted to define an air-tight seal between the deformable member and the IEM
Data Source
AI summary
An integrated acoustic coupler for use in sound engineering testing of an IEM (in-ear monitor). The integrated acoustic coupler comprises an integrated coupler body having an input, a first chamber and an output port. The input defines an IEM seat defined by a foam member and into an which an IEM may be inserted to define an air-tight seal between the foam and the IEM. The first chamber is in fluid communication with the IEM seat and interconnected with at least one second chamber via a passageway configured for creating compliance and impedance to simulate a human ear. The output port is configured for electronically interconnecting to an XLR cable and outputting a signal from an IEM under test to a mixer or audio analyzer.