Microphone Array Beamforming for Portable Instrument Recording
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Professional-grade audio recording of musical instruments often requires specialized microphones and expertise, limiting accessibility for non-experts and environments without professional studio equipment.
Innovation Solution
A portable electronic device equipped with a microphone array that emulates professional recording techniques by combining microphone signals to create acoustic pickup beams with varying directivity patterns and look-directions, guided by user input and sensor analysis to simulate a professional studio environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If professional studio microphones and techniques are used, then audio recording quality is improved, but device complexity and cost increase
Solution Approach 1:
The patent combines multiple microphones into a single integrated array within the portable device, merging the functions of what would traditionally require multiple separate professional microphones. This consolidation maintains audio quality while reducing equipment complexity and making the system portable.
Solution Approach 2:
The microphone array is designed to perform multiple recording functions (close-mic technique, stereo-mic technique, and spatial width enhancement) that would traditionally require different specialized microphones. This multi-functionality allows a single device to replace multiple professional equipment pieces.
2Measurement precision
If professional sound engineers operate the recording equipment, then audio recording quality is improved, but ease of operation deteriorates
Solution Approach 1:
The system automatically determines the type of musical instrument being recorded and selects appropriate microphone configurations without requiring user expertise. The device serves itself by making professional engineering decisions autonomously, eliminating the need for skilled operators while maintaining high audio quality.
Solution Approach 2:
The system uses sensor feedback to detect the instrument type and automatically adjusts microphone settings accordingly. This closed-loop control allows non-experts to achieve professional results by simply placing the device near the instrument, with the system self-correcting based on detected conditions.
3Measurement precision
If close-mic technique is used with specialized microphones, then audio recording quality is improved, but adaptability to different environments deteriorates
Solution Approach 1:
The microphone array dynamically adjusts its configuration and beamforming patterns based on the detected instrument type and environmental conditions. This dynamic adaptability allows the system to maintain close-mic quality across various environments without requiring manual reconfiguration or specialized equipment for each setting.
Data Source
AI summary
A microphone array included in a portable electronic device is used to generate various virtual studio microphones by combining one or more microphone signals to produce one or more acoustic pickup beams. An error is determined in a position of the microphone array relative to an audio source to be recorded. An interface is displayed to instruct a user on repositioning the microphone array relative to the instrument and the instrument is recorded using the repositioned microphone array.