Object-Based Audio System Preset Control for Independent Signal Customization
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Solution Overview
Problem
In object-based audio services, users cannot independently control the characteristics of audio signals from different sound sources, limiting their ability to customize audio experiences, such as reducing vocal volume in Karaoke versions without affecting other audio objects.
Innovation Solution
An object-based audio system that provides preset information to control audio objects and reference information to locate audio files, allowing for the creation and distribution of a preset file that includes both, enabling users to control and play back audio objects even when the original audio file is not distributed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If audio signals for each sound source are independently stored, then users can control characteristics of audio signals for each sound source, but storage and transmission requirements increase
Solution Approach 1:
The audio service is segmented into two independent components: audio objects (stored in audio files) and control parameters (stored in preset files). This allows users to control audio characteristics through separate preset information without duplicating the entire audio content, reducing storage requirements while maintaining operational flexibility.
Solution Approach 2:
Instead of storing complete audio signals for each sound source, the system stores compact preset information that copies only the essential control parameters (such as volume, pan position, effects) needed to reproduce the desired audio characteristics. This significantly reduces storage requirements while preserving the ability to control audio signals independently.
2Quantity of substance
If only preset information is distributed, then storage and transmission requirements are reduced, but users cannot acquire the audio file without additional reference information
Solution Approach 1:
The preset file includes reference information that preliminarily identifies the location or name of the corresponding audio file. This preliminary information allows users to easily locate and associate the audio file with the preset, ensuring that no critical information is lost during distribution while maintaining compact file sizes.
3Quantity of substance
If audio signals are synthesized into a single signal, then storage is simplified, but users cannot control characteristics of audio signals for each sound source
Solution Approach 1:
The system segments the audio signal into multiple independent audio objects, each representing a distinct sound source. This segmentation enables independent control of each audio object's characteristics through separate preset parameters, providing operational flexibility while maintaining efficient storage through the separation of audio data and control data.
Data Source
AI summary
An object-based audio system, an object-based audio providing method, and an object-based audio playback method using a preset are provided. The object-based audio system includes a reference information providing unit to provide reference information used to refer to a storage location of an object-based audio file, and a preset information providing unit to provide preset information used to control at least one audio object forming the object-based audio file.