Removable Microphone Array for Directional Audio Capture
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Solution Overview
Problem
Existing directional audio systems for mobile electronic devices lack the ability to efficiently capture and process high-definition audio in crowded environments and do not provide effective solutions for improving audio input for hearing-impaired users or enabling portable devices to capture and render high-quality audio and video recordings.
Innovation Solution
A microphone array apparatus with a removably attachable design, featuring an array surface with microphones and an audio processing module that can be integrated into or coupled with portable computing devices, allowing for directional audio capture and processing through beamforming and filtering, enabling improved audio input and output capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a microphone array apparatus is removably attached to a portable computing device, then audio capture capability is improved, but device complexity increases
Solution Approach 1:
The microphone array apparatus is designed as a separate, removable module that can be independently attached to or detached from the portable computing device. This segmentation allows the audio capture functionality to be enhanced without permanently increasing the complexity of the main device, as the array can be removed when not needed.
Solution Approach 2:
The microphone array apparatus is designed to be compatible with multiple types of portable computing devices through universal attachment mechanisms. This multi-functionality allows a single array design to enhance various devices without requiring device-specific customization, thereby managing complexity while improving audio capture across different platforms.
2Measurement precision
If directional audio capture is implemented, then audio quality in noisy environments is improved, but device complexity increases
Solution Approach 1:
The directional audio capture functionality is implemented as a separate microphone array module rather than integrating it into the main device. This segmentation isolates the complex beamforming and directional processing requirements to the removable array, allowing the main device to remain simpler while still achieving high-quality directional audio capture when the array is attached.
Solution Approach 2:
The microphone array apparatus acts as an intermediary between the acoustic environment and the portable computing device. It captures and processes directional audio signals using specialized microphones and beamforming algorithms, then transmits the processed audio data to the main device, thereby enabling directional audio capability without requiring the main device to contain all the complex audio processing hardware.
3Adaptability or versatility
If an array surface is made removable and attachable, then adaptability is improved, but manufacturing precision requirements increase
Solution Approach 1:
The attachment mechanism is designed with universal compatibility features that allow the microphone array to be attached to various types of portable computing devices with different form factors. This universality achieves adaptability across multiple device types while using standardized attachment components that do not require extremely high manufacturing precision, as the design accommodates reasonable variations in device surfaces.
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 microphone array apparatus enhances audio recording and playback quality, particularly in noisy environments, and aids hearing-impaired users by providing directional audio capture and processing, enabling high-definition audio capture and rendering on portable devices.
Implementation Method 1
an array surface 302 constructed from a substantially stretchable or bendable fabric capable of passing acoustic signals therethrough
Data Source
AI summary
A directional microphone array which can be integrated into a case for a portable computing device. A microphone array board connects to a surface of a laptop computer, tablet computer or smart phone, which can be steered in the direction of a target source. An audio processing module (APM) is operably engaged with the array board to receive a first staged beamformed audio input from the array board, and process a second beamformed stage audio output.