Camera Audio Geo-Orientation and Metadata Mapping
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Solution Overview
Problem
Existing cameras lack the ability to effectively provide audio direction and clip information, as well as classify and map audio data with geo-orientation and speaker identification.
Innovation Solution
A camera equipped with a multi-directional microphone that determines geo-orientation information based on audio arrival time difference, amplitude, and intensity, and classifies audio types, including voice recognition and keyword detection, mapping this information to metadata.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a camera is equipped with a multi-directional microphone to receive audio, then audio direction information can be obtained, but the device complexity increases
Solution Approach 1:
The camera device is enhanced with multi-functional capabilities by integrating a multi-directional microphone array that serves both audio recording and directional source localization. The processor performs multiple functions including audio signal processing, geo-orientation calculation, audio classification, and metadata generation, allowing a single device to handle diverse audio-related tasks without requiring separate specialized equipment.
2Measurement precision
If the processor extracts audio information and determines geo-orientation information based on arrival time difference, amplitude, and intensity, then audio source localization accuracy is improved, but the processing time and computational complexity increase
Solution Approach 1:
The system performs preliminary audio signal processing by continuously monitoring and analyzing audio characteristics such as arrival time differences, amplitude, and intensity from the multi-directional microphone array. This preliminary analysis enables rapid determination of geo-orientation information when audio events occur, reducing the processing time required for real-time audio source localization while maintaining high accuracy.
3Loss of information
If the camera classifies audio into types and performs voice recognition with keyword detection, then audio information utility is enhanced, but the processing complexity and energy consumption increase
Solution Approach 1:
The audio classification system implements local quality processing by focusing computational resources on specific audio characteristics relevant to particular classification tasks. The processor analyzes audio signals with varying levels of detail depending on the required classification granularity, performing comprehensive analysis only when necessary for accurate audio type identification and keyword detection, thereby optimizing energy consumption while maintaining high information utility.
4Loss of information
If the camera maps audio information to metadata including audio clip information and geo-orientation information, then audio data utilization is improved, but the data processing complexity increases
Solution Approach 1:
The system merges multiple audio-related data elements including audio clip information, geo-orientation information, audio classification results, and speaker identification data into a unified metadata structure. This consolidation integrates diverse information sources into a coherent framework that simplifies data access and utilization while maintaining comprehensive audio information, reducing the complexity of handling separate data streams independently.
Data Source
AI summary
A camera includes: a multi-directional microphone configured to receive audio; a processor configured to extract audio information about the audio from the multi-directional microphone; and a memory configured to store instructions executable by the processor, where, by executing the instructions stored on the memory, the processor is configured to control: a direction information calculation module to determine geo-orientation information about the audio based on the audio information, and an audio information providing module to map information to metadata including audio clip information about an audio clip from the audio, and the geo-orientation information.