Audio Source Location Determination Using Likelihood Estimation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for determining the physical location of an audio source are often inaccurate, leading to unreliable results in audio monitoring systems.
Innovation Solution
The system calculates estimated source locations and creates estimation error values, using these to calculate likelihood values for each location. The location with the highest likelihood value is selected as the actual physical location of the audio source.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing methods are used to determine audio source location, then the system can provide location information, but the accuracy of the location determination is poor
Solution Approach 1:
The system calculates estimation errors for each candidate location by comparing expected time differences with actual measured time differences. This feedback mechanism allows the system to evaluate and select the most accurate location estimate from multiple candidates, thereby improving both measurement precision and result reliability
Solution Approach 2:
The system changes the approach from directly selecting a single location estimate to evaluating multiple candidate locations using likelihood values based on estimation errors. By transforming the selection criterion into a probabilistic framework, the system achieves more accurate and reliable location determination
Data Source
AI summary
Methods, apparatus, systems, and articles of manufacture to determine a physical location of an audio source are disclosed. One such apparatus includes a microphone set identifier to identify ordered microphone sets from a plurality of microphones and an estimated source location calculator to calculate estimated source locations for the audio source. The apparatus further includes an estimation error calculator to calculate respective estimation errors for corresponding ones of the estimated source locations. A likelihood calculator calculates respective likelihood values for corresponding ones of the estimated source locations and a first one of the estimated source location associated with a selected one of the likelihood values is used to represent the physical location of the audio source.