Object Audio Encoding With Sense-of-Distance Control Metadata
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Solution Overview
Problem
Existing object-based audio technologies lack the ability to reproduce a sense of distance based on the content creator's intention, as gain control and filter processing are predetermined.
Innovation Solution
An encoding device and method that includes encoding audio data, metadata, and sense-of-distance control information, allowing for customizable sense-of-distance control processing on the decoding side, and a decoding device that performs this processing to generate reproduction audio data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If gain control and filter processing are predetermined for reproducing sense of distance, then audio reproduction with standard distance characteristics is achieved, but the ability to reproduce customized sense of distance based on content creator's intention is lost
Solution Approach 1:
The encoding device determines and encodes sense-of-distance control information (gain control parameters and filter parameters) before audio encoding. This preliminary preparation allows the decoding device to apply customized distance characteristics without complex real-time processing, resolving the contradiction between adaptability and complexity.
Solution Approach 2:
The patent changes the parameters of gain control and filter processing based on sense-of-distance control information. By dynamically adjusting these parameters according to the encoded control data, the system achieves customized sense of distance reproduction while maintaining manageable system complexity through parameter-based control rather than structural complexity.
2Adaptability or versatility
If predetermined gain control and filter processing are used, then standard sense of distance reproduction is achieved, but customization according to content creator's intention is prevented
Solution Approach 1:
The encoding device performs preliminary determination of sense-of-distance control information and encodes it alongside audio data. This ensures that customization parameters are preserved and transmitted to the decoding device, preventing loss of control information and enabling intention-based customization.
Solution Approach 2:
The patent introduces sense-of-distance control information as an intermediary element between the content creator's intentions and the audio reproduction process. This intermediary carries the customization parameters through the encoding/decoding system, enabling lossless transmission of control intentions while maintaining standard processing architecture.
Data Source
AI summary
The present technology relates to an encoding device and method, a decoding device and method, and a program capable of realizing sense-of-distance control based on intention of a content creator.The encoding device includes: an object encoding unit that encodes audio data of an object; a metadata encoding unit that encodes metadata including position information of the object; a sense-of-distance control information determination unit that determines sense-of-distance control information for sense-of-distance control processing to be performed on the audio data; a sense-of-distance control information encoding unit that encodes the sense-of-distance control information; and a multiplexer that multiplexes the coded audio data, the coded metadata, and the coded sense-of-distance control information to generate coded data. The present technology can be applied to a content reproduction system.