Smart Rearview Mirror Audio Delay Estimation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing smart rearview mirrors face challenges in audio playback delay due to large data transmission, with fixed delay estimation upper limits failing to adapt to varying external device performances, leading to suboptimal noise reduction and voice interaction experiences.
Innovation Solution
A method to dynamically set a target delay estimation upper limit based on the identification information of connected external devices, using a configuration file to determine suitable limits for each device, ensuring accurate delay estimation and improved audio playback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a fixed delay estimation upper limit is used in the delay estimation algorithm, then the calculation result is constrained within a small range, but the algorithm cannot adapt to external devices with different performance levels, causing inaccurate delay estimation for devices with poor performance
Solution Approach 1:
The patent implements dynamic adjustment of the delay estimation upper limit based on external device performance. The system obtains identification information of the external device, queries a configuration file to determine the device's performance level, and dynamically sets the upper limit accordingly. This resolves the contradiction by making the previously fixed parameter adaptive to different device capabilities.
Solution Approach 2:
The patent changes the parameter value of the delay estimation upper limit based on external device performance characteristics. By querying the configuration file with the external device's identification information, the system retrieves performance data and adjusts the upper limit parameter to match the device's capabilities, thereby achieving both accuracy and adaptability.
2Productivity
If the delay estimation upper limit is set small to ensure fast convergence, then the algorithm converges quickly for devices with good performance, but devices with poor performance cannot achieve suitable delay estimation within this range
Solution Approach 1:
The patent applies different delay estimation upper limit values to different external devices based on their performance characteristics. High-performance devices receive smaller upper limits for fast convergence, while low-performance devices receive larger upper limits to ensure accurate delay estimation within their processing capabilities. This local differentiation resolves the contradiction between convergence speed and estimation accuracy.
3Reliability
If the delay estimation upper limit is increased to accommodate poor performance devices, then these devices can achieve delay estimation, but devices with good performance experience slow convergence and deteriorated voice interaction experience
Solution Approach 1:
The system dynamically adjusts the delay estimation upper limit based on the external device's performance level obtained from the configuration file. This dynamic parameter adjustment ensures that each device operates with an optimal upper limit value, achieving both reliable delay estimation and acceptable convergence time for its specific performance characteristics.
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
A delay estimation method for a smart rearview mirror, a delay estimation apparatus for a smart rearview mirror, and an electronic device are provided. Identification information of an external device is obtained (101) in response to connecting to the external device by a smart rearview mirror for screen projection. A target delay estimation upper limit corresponding to the external device is obtained (102) based on the identification information. A delay estimation result is obtained (103) by performing delay estimation based on the target delay estimation upper limit in response to sending a voice signal by the smart rearview mirror to the external device. The delay processing is performed (104) on the voice signal based on the delay estimation result.