Telefonaktiebolaget LM Ericsson (publ) (20240282319). IMPROVED STABILITY OF INTER-CHANNEL TIME DIFFERENCE (ITD) ESTIMATOR FOR COINCIDENT STEREO CAPTURE simplified abstract
Contents
IMPROVED STABILITY OF INTER-CHANNEL TIME DIFFERENCE (ITD) ESTIMATOR FOR COINCIDENT STEREO CAPTURE
Organization Name
Telefonaktiebolaget LM Ericsson (publ)
Inventor(s)
Erik Norvell of Upplands Väsby (SE)
[[:Category:Tomas Jansson Toftg�rd of Uppsala (SE)|Tomas Jansson Toftg�rd of Uppsala (SE)]][[Category:Tomas Jansson Toftg�rd of Uppsala (SE)]]
IMPROVED STABILITY OF INTER-CHANNEL TIME DIFFERENCE (ITD) ESTIMATOR FOR COINCIDENT STEREO CAPTURE - A simplified explanation of the abstract
This abstract first appeared for US patent application 20240282319 titled 'IMPROVED STABILITY OF INTER-CHANNEL TIME DIFFERENCE (ITD) ESTIMATOR FOR COINCIDENT STEREO CAPTURE
The patent application describes a method and apparatus for identifying coincident microphone configurations and adapting inter-channel time differences in an encoder or decoder.
- Generating a cross-correlation of a channel pair in a multi-channel audio signal for each frame.
- Determining a first inter-channel time difference estimate based on the cross-correlation.
- Checking if the multi-channel audio signal is a coincident signal.
- Biasing the inter-channel time difference search to favor values close to zero if the signal is coincident, to obtain a final time difference estimate.
Potential Applications: - Audio processing systems - Surround sound systems - Virtual reality audio
Problems Solved: - Accurately determining inter-channel time differences in audio signals - Improving audio quality in multi-channel systems
Benefits: - Enhanced audio spatialization - Improved synchronization in multi-channel audio playback
Commercial Applications: Title: "Enhancing Audio Spatialization in Surround Sound Systems" This technology can be used in home theater systems, gaming consoles, and virtual reality platforms to provide users with a more immersive audio experience.
Questions about the technology: 1. How does this method improve audio quality in multi-channel systems?
- By accurately determining inter-channel time differences, the system can enhance audio spatialization and synchronization, resulting in a more immersive listening experience.
2. What are the potential applications of this technology beyond audio processing systems?
- This technology can also be utilized in virtual reality platforms and gaming consoles to enhance the audio experience for users.
Original Abstract Submitted
a method and apparatus to identify coincident microphone configurations, cc, and adapt an inter-channel time difference, itd, search, in an encoder or a decoder is provided. the method includes for each frame m of a multi-channel audio signal: generating a cross-correlation of a channel pair of the multi-channel audio signal; determining a first itd estimate based on the cross-correlation; determining if the multi-channel audio signal is a cc signal; and responsive to determining that the multi-channel audio signal is a cc signal, biasing the itd search to favor itds close to zero to obtain a final itd.
