Virtual Microphone Audio Synthesis and Policy Control
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Solution Overview
Problem
Existing mobile electronic devices lack the capability to simulate a virtual microphone at a specified location using multiple physical microphones, limiting their ability to capture audio as if recorded from that location, and do not effectively manage audio recording policies based on geography, time, or individual presence.
Innovation Solution
A system and method that initializes and operates a virtual microphone by combining audio streams from multiple physical microphones positioned at different locations, allowing them to capture audio as if recorded from a specified location, while implementing policies to govern when and where such virtual microphones can be used, including geography-based, time-based, and individual-based restrictions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple physical microphones are used to create a virtual microphone at a specified location, then audio recording capability is improved, but device complexity increases
Solution Approach 1:
The patent creates a virtual microphone that copies the audio capture function of a physical microphone located at a specified position. Multiple physical microphones are used to synthesize and reproduce the acoustic characteristics of a single microphone at the target location, enabling flexible audio recording without physically placing a microphone at every desired position.
Solution Approach 2:
The system introduces a virtual microphone as an intermediary between physical microphones and the audio processing system. This virtual microphone acts as a mediator that receives audio signals from multiple physical microphones, processes them through beamforming and acoustic modeling, and outputs a combined audio stream that represents the sound field at the specified location.
2Adaptability or versatility
If virtual microphones are allowed at any location, then adaptability is improved, but security and privacy risks increase
Solution Approach 1:
The patent implements preliminary anti-action by establishing policies and restrictions before virtual microphones are deployed. Geographic restrictions define permissible locations in advance, time-based controls specify when virtual microphones can operate, and individual-based policies determine which users can create them. These preventive measures block potential privacy violations before they occur.
Solution Approach 2:
The system incorporates feedback mechanisms that continuously monitor virtual microphone usage against defined policies. When a virtual microphone attempts to operate in a restricted location or during prohibited times, the system detects this and terminates the operation. This feedback loop ensures compliance with privacy and security requirements while maintaining adaptability within acceptable boundaries.
Data Source
AI summary
The disclosed computer-implemented method may include establishing and implementing a virtual microphone. The method may include receiving an input specifying a location for a virtual microphone that is configured to capture audio as if located in the specified location. The method may next include initializing physical microphones to begin capturing audio as if located at the specified location. The physical microphones may be electronically or physically oriented to listen from the specified location. The method may then include combining audio streams from the physical microphones to generate a combined audio signal that sounds as if recorded at the specified location. Various other methods, systems, and computer-readable media are also disclosed.