Multi-Lobe Digital Microphones for Selective Arena Audio Capture
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Solution Overview
Problem
Existing audio capture systems in arena environments struggle with capturing localized and classified audio streams effectively, leading to inclusion of unwanted sounds and requiring manual adjustment of directional microphones, which is cumbersome and difficult during live broadcasts.
Innovation Solution
Utilization of multi-lobe digital sound wave capture devices with beamformed lobes and advanced audio processing techniques, such as AI classification, to selectively capture and classify audio streams based on locality and source, enabling immersive audio experiences with reduced noise and manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional directional microphones are used in arena environments, then audio capture coverage is achieved, but manual adjustment is required which is cumbersome and difficult during live broadcasts
Solution Approach 1:
The system employs automated audio capture and classification algorithms that self-adjust to capture desired audio sources without manual intervention. The multi-lobe digital microphone automatically identifies and tracks audio sources, classifies them by type and location, and adjusts beamforming lobes dynamically during live broadcasts, eliminating the need for operators to manually reposition microphones.
Solution Approach 2:
The patent implements dynamic beamforming capabilities where the microphone system continuously adapts its directional sensitivity patterns in real-time. The beamformed lobes are dynamically adjusted based on the movement and classification of audio sources, allowing the system to maintain optimal capture performance throughout live events without static configuration limitations.
2Measurement precision
If traditional audio capture systems are used, then general audio coverage is achieved, but unwanted sounds are included and localized/classified audio streams are not captured effectively
Solution Approach 1:
The audio spectrum is segmented into distinct classified streams based on source type (e.g., player communications, crowd noise, commentary) and spatial location. The multi-lobe digital microphone divides the capture field into multiple beamformed lobes, each targeting specific zones or source types, allowing precise separation and selective capture of desired audio while excluding unwanted sounds from other segments.
Solution Approach 2:
Different regions of the audio capture field are assigned different quality characteristics through localized beamforming. Each beamformed lobe is optimized for specific spatial zones or source types, applying enhanced sensitivity and classification precision to locally relevant audio sources while reducing sensitivity to distant or unwanted sounds, thereby achieving high localization precision and noise rejection simultaneously.
3Measurement precision
If multi-lobe digital sound wave capture devices with beamformed lobes are used, then audio capture selectivity is enhanced and unwanted noise is reduced, but device complexity increases
Solution Approach 1:
The patent replaces complex mechanical microphone adjustment systems with digital signal processing and software-based beamforming algorithms. Instead of physically repositioning multiple microphones or manually adjusting mechanical directional elements, the system uses digital processing to create and steer beamformed lobes, achieving high selectivity through computational methods rather than mechanical complexity.
Solution Approach 2:
The multi-lobe digital microphone is designed as a universal platform that can capture and classify multiple types of audio sources simultaneously across different spatial zones. A single device performs the functions of multiple specialized microphones by dynamically configuring its beamformed lobes, reducing the overall system complexity while maintaining high capture selectivity through multi-functional capability.
Data Source
AI summary
An example immersive audio signal processing system and a computer-implemented method for generating a target arena environment audio stream are provided. The example immersive audio signal processing system includes a plurality of multi-lobe digital sound wave capture devices positioned within the arena environment. The plurality of multi-lobe digital sound wave capture devices is configured to direct first beamformed lobes to a playing region of the arena environment, second beamformed lobes to a spectator region of the arena environment, and third beamformed lobes to a noise source region of the arena environment. A digital signal processor is configured to isolate noise audio components originating from at least the spectator region or the noise source region from the audio signal stream and generate a target arena environment audio stream.