Audio Enhancement System Using Device Metadata for Quality Consistency
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Solution Overview
Problem
Audio rendering systems, such as speakers or headphones, have varying capabilities and limitations due to differences in device characteristics, leading to inconsistent audio experiences across different devices and orientations, necessitating a method to adjust audio content accordingly.
Innovation Solution
An audio enhancement system that queries the device's operating system to determine device-specific rendering information, applies audio enhancements such as subband processing based on the device's manufacturer and orientation, and transmits the enhanced audio signal to the appropriate audio rendering system, either locally or remotely via a network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If audio content is rendered using standard rendering methods, then the audio signal can be output directly, but the audio quality becomes inconsistent across different devices with varying speaker characteristics and orientations
Solution Approach 1:
The system changes audio signal parameters (equalization filters, spatial audio processing parameters) based on device-specific characteristics such as speaker frequency responses and orientations. The audio enhancement system queries device metadata including manufacturer information and orientation data to dynamically adjust rendering parameters, transforming the audio signal to compensate for device variations and achieve consistent audio quality across different devices
Solution Approach 2:
The system implements feedback by querying device metadata from the operating system to obtain information about speaker characteristics and orientation. This feedback information is used to determine appropriate audio enhancements and adjust the audio signal accordingly, creating a closed-loop system that adapts to device-specific conditions to maintain consistent audio quality
2Reliability
If device-specific audio enhancements are applied, then audio quality can be optimized for each device, but the system complexity increases due to querying OS and processing device metadata
Solution Approach 1:
The system performs preliminary action by pre-defining audio enhancement characteristics for different device types and orientations. The audio enhancement system contains pre-configured enhancement profiles that can be quickly selected and applied based on device metadata, avoiding the need for complex real-time analysis and computation while still achieving device-specific optimization
Solution Approach 2:
The operating system acts as an intermediary by providing standardized device metadata queries that bridge the audio enhancement system and the device hardware. This intermediary layer simplifies the system architecture by centralizing device information access through standard OS APIs, reducing the complexity of direct device communication and metadata collection
3Measurement precision
If the audio enhancement system queries OS for device information, then accurate device-specific rendering can be achieved, but the processing time and system resources are consumed
Solution Approach 1:
Device information is obtained through preliminary queries to the operating system that leverage already-collected and cached device metadata. The system queries for information such as speaker orientations and device characteristics that may have been previously gathered during device initialization or configuration, avoiding redundant processing and reducing time consumption while maintaining accurate device-specific rendering
Data Source
AI summary
A device renders enhanced audio based on properties of an audio rendering system. For example, audio rendering system information of an audio rendering system associated with the device is used to determine an audio enhancement optimized for the audio rendering system. The OS of the device (e.g., a mobile phone) is queried to determine the audio rendering system information. The audio rendering system information is used to determine an audio enhancement, such as by querying a database storing associations between rendering system information and audio enhancements. The audio enhancement may include, for example, one or more types of audio processing (e.g., subband spatial processing, crosstalk processing, etc.) and particular parameters for the audio processing. The audio enhancement is applied to an audio signal to generate an enhanced audio signal that is provided to the audio rendering system.