Delay Estimation Method and Apparatus

Organization Name

HUAWEI TECHNOLOGIES CO., LTD.

Inventor(s)

Eyal Shlomot of Long Beach CA (US)

Haiting Li of Beijing (CN)

Lei Miao of Beijing (CN)

Delay Estimation Method and Apparatus - A simplified explanation of the abstract

This abstract first appeared for US patent application 18590257 titled 'Delay Estimation Method and Apparatus

Simplified Explanation:

The patent application describes a method for estimating delays in a multi-channel signal by analyzing cross-correlation coefficients, past time difference information, and adaptive window functions.

**Determining cross-correlation coefficient of a multi-channel signal**
**Estimating delay track based on past inter-channel time difference information**
**Calculating adaptive window function for the current frame**
**Weighting the cross-correlation coefficient based on delay track estimation and adaptive window function**
**Determining inter-channel time difference based on the weighted cross-correlation coefficient**

Key Features and Innovation:

Analysis of cross-correlation coefficients in multi-channel signals
Utilization of past time difference information for delay estimation
Implementation of adaptive window functions for accurate estimation
Weighting mechanism for improved accuracy in delay estimation

Potential Applications:

This technology can be applied in various fields such as telecommunications, audio processing, and image processing where accurate delay estimation is crucial.

Problems Solved:

This technology addresses the challenge of accurately estimating delays in multi-channel signals, which is essential for synchronization and alignment in various applications.

Benefits:

Improved accuracy in delay estimation
Enhanced synchronization in multi-channel systems
Increased efficiency in signal processing applications

Commercial Applications:

Title: Advanced Delay Estimation Method for Multi-Channel Signals

This technology has potential commercial applications in industries such as telecommunications, audio equipment manufacturing, and video production where precise delay estimation is critical for optimal performance and quality.

Prior Art:

Further research can be conducted in the field of signal processing, specifically in the area of delay estimation methods for multi-channel signals.

Frequently Updated Research:

Researchers are continuously exploring new methods and algorithms for improving delay estimation in multi-channel signals, which could lead to advancements in this technology.

Questions about Delay Estimation Technology: 1. What are the key challenges in accurately estimating delays in multi-channel signals? 2. How does the weighting mechanism based on past information improve the accuracy of delay estimation?

Original Abstract Submitted

A delay estimation method includes determining a cross-correlation coefficient of a multi-channel signal of a current frame, determining a delay track estimation value of the current frame based on buffered inter-channel time difference information of at least one past frame, determining an adaptive window function of the current frame, performing weighting on the cross-correlation coefficient based on the delay track estimation value of the current frame and the adaptive window function of the current frame, to obtain a weighted cross-correlation coefficient, and determining an inter-channel time difference of the current frame based on the weighted cross-correlation coefficient.