18516046. SUPPORT FOR GENERATION OF COMFORT NOISE, AND GENERATION OF COMFORT NOISE simplified abstract (Telefonaktiebolaget LM Ericsson (publ))
Contents
SUPPORT FOR GENERATION OF COMFORT NOISE, AND GENERATION OF COMFORT NOISE
Organization Name
Telefonaktiebolaget LM Ericsson (publ)
Inventor(s)
Erik Norvell of Upplands Väsby (SE)
Fredrik Jansson of Sundbyberg (SE)
SUPPORT FOR GENERATION OF COMFORT NOISE, AND GENERATION OF COMFORT NOISE - A simplified explanation of the abstract
This abstract first appeared for US patent application 18516046 titled 'SUPPORT FOR GENERATION OF COMFORT NOISE, AND GENERATION OF COMFORT NOISE
Simplified Explanation
The patent application describes a method for generating comfort noise for at least two audio channels by determining spatial coherence between audio signals on the respective channels and forming a vector of spatial coherence values. This vector is used to predict spatial coherence values by combining first and second coherence predictions with a weight factor α, which is then signaled to the receiving node for generating the comfort noise.
- Explanation of the patent/innovation:
- Determining spatial coherence between audio signals on different channels - Forming a vector of spatial coherence values - Predicting spatial coherence values using a weighted combination of coherence predictions - Signaling information about the weight factor α to the receiving node
- Potential applications of this technology:
- Audio conferencing systems - Virtual reality environments with spatial audio - Telecommunication systems with multiple audio channels
- Problems solved by this technology:
- Providing a more realistic and immersive audio experience - Reducing background noise in multi-channel audio systems - Enhancing the quality of audio communication in various applications
- Benefits of this technology:
- Improved audio quality - Enhanced spatial audio effects - Better user experience in audio-related applications
- Potential commercial applications of this technology:
- Audio equipment manufacturers - Communication software developers - Entertainment industry for immersive audio experiences
- Possible prior art:
- Spatial audio processing techniques in virtual reality systems - Noise reduction algorithms in audio conferencing systems
Questions:
1. How does the method determine the weight factor α for combining coherence predictions? 2. What are the specific frequency bands used for determining spatial coherence values in the method?
Original Abstract Submitted
A method for generation of comfort noise for at least two audio channels. The method comprises determining a spatial coherence between audio signals on the respective audio channels, wherein at least one spatial coherence value per frame and frequency band is determined to form a vector of spatial coherence values. A vector of predicted spatial coherence values is formed by a weighted combination of a first coherence prediction and a second coherence prediction that are combined using a weight factor α. The method comprises signaling information about the weight factor α to the receiving node, for enabling the generation of the comfort noise for the at least two audio channels at the receiving node.
