Adaptive Inter-Channel Time Difference Parameter Search
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Solution Overview
Problem
Existing audio processing technologies waste computing resources and reduce processing efficiency due to using a fixed search range and step for determining the inter-channel time difference (ITD) parameter, which does not adapt to varying channel quality.
Innovation Solution
Adapting the search complexity based on current channel quality by determining a target search complexity from multiple predefined complexities, allowing for flexible precision of the ITD parameter, thereby optimizing search processing on audio signals from multiple channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a fixed search range and search step are used for determining ITD parameter, then the determination method is simple, but computing resources are wasted and processing efficiency is reduced
Solution Approach 1:
The patent applies dynamics by making the search range and search step adaptive rather than fixed. The search parameters are dynamically adjusted based on channel quality assessment, allowing the system to optimize processing efficiency for different audio conditions while maintaining simplicity through automated adaptation.
Solution Approach 2:
The patent changes the parameters of search range and search step based on channel quality. By modifying these parameters dynamically according to the assessed channel conditions, the system resolves the contradiction between method simplicity and processing efficiency, achieving both through adaptive parameter selection.
2Measurement precision
If a large search range and small search step are used, then precision of ITD parameter is high, but computing resources are wasted
Solution Approach 1:
The patent applies local quality by adjusting the search parameters according to local channel conditions. Different search ranges and steps are selected based on the specific channel quality assessment, ensuring high precision when needed while conserving computing resources when channel conditions allow for coarser search.
Solution Approach 2:
The patent changes search parameters (range and step) based on channel quality to resolve the contradiction between precision and computing resource usage. When channel quality is good, finer search parameters are used for higher precision; when channel quality is poor, coarser parameters reduce computing resource consumption.
3Productivity
If adaptive search complexity is implemented, then processing efficiency is improved, but device complexity increases
Solution Approach 1:
The patent applies preliminary action by performing channel quality assessment before the ITD parameter search. This preliminary step enables the system to pre-determine appropriate search parameters, improving processing efficiency while keeping the overall device complexity manageable through a structured two-stage approach.
Solution Approach 2:
The patent uses feedback from channel quality assessment to adjust search parameters. The system evaluates channel conditions and feeds this information back to select appropriate search range and step, achieving adaptive processing efficiency while maintaining reasonable device complexity through feedback-driven parameter selection.
Data Source
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AI summary
A method (100) and an apparatus (200) for determining an inter-channel time difference parameter are provided, so that precision of a determined ITD parameter can adapt to channel quality. The method (100) includes: determining a target search complexity from at least two search complexities, where the at least two search complexities are in a one-to-one correspondence with at least two channel quality values (S110); and performing search processing on a signal on a first sound channel and a signal on a second sound channel according to the target search complexity, to determine a first inter-channel time difference ITD parameter corresponding to the first sound channel and the second sound channel (S120).