20240055008. SUPPORT FOR GENERATION OF COMFORT NOISE simplified abstract (Telefonaktiebolaget LM Ericsson (publ))

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SUPPORT FOR GENERATION OF COMFORT NOISE

Organization Name

Telefonaktiebolaget LM Ericsson (publ)

Inventor(s)

Fredrik Jansson of Sundbyberg (SE)

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)]]

SUPPORT FOR GENERATION OF COMFORT NOISE - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240055008 titled 'SUPPORT FOR GENERATION OF COMFORT NOISE

Simplified Explanation

The abstract describes a method and a transmitting node for generating comfort noise for multiple audio channels at a receiving node. The method involves determining the spectral characteristics of the audio signals on the input channels and the spatial coherence between them. The spatial coherence is associated with perceptual importance measures. A compressed representation of the spatial coherence is determined per frequency band by weighting it according to the perceptual importance measures. Information about the spectral characteristics and the compressed representation of the spatial coherence is signaled to the receiving node to enable the generation of comfort noise.

  • The method involves determining the spectral characteristics of audio signals on multiple input channels.
  • The spatial coherence between the audio signals is determined, which is associated with perceptual importance measures.
  • A compressed representation of the spatial coherence is determined per frequency band by weighting it based on the perceptual importance measures.
  • Information about the spectral characteristics and the compressed representation of the spatial coherence is signaled to the receiving node.
  • The receiving node can then generate comfort noise based on this information.

Potential applications of this technology:

  • Telecommunication systems: This technology can be used in telecommunication systems to enhance the quality of audio transmission by generating comfort noise at the receiving end.
  • Voice over IP (VoIP): VoIP systems can benefit from this technology to improve the audio quality during calls by generating realistic comfort noise.
  • Audio conferencing: This technology can be applied in audio conferencing systems to provide a more natural and immersive audio experience for participants.

Problems solved by this technology:

  • Eliminating silence gaps: Comfort noise generation helps to fill in the gaps during periods of silence in audio transmission, reducing the perception of interruptions or disconnections.
  • Enhancing audio quality: By generating realistic comfort noise, this technology can improve the overall audio quality and user experience in communication systems.
  • Spatial coherence optimization: The method allows for the optimization of spatial coherence based on perceptual importance measures, ensuring that the generated comfort noise is aligned with the audio signals.

Benefits of this technology:

  • Improved user experience: By generating comfort noise, this technology can provide a more seamless and natural audio experience for users, reducing the perception of silence or interruptions.
  • Enhanced audio quality: The generation of realistic comfort noise helps to maintain a consistent audio quality, even during periods of silence.
  • Efficient transmission: The compressed representation of spatial coherence allows for efficient signaling of information, reducing the bandwidth and resources required for transmission.


Original Abstract Submitted

a method and a transmitting node for supporting generation of comfort noise for at least two audio channels at a receiving node. the method is performed by a transmitting node. the method comprises determining spectral characteristics of audio signals on at least two input audio channels and determining a spatial coherence between the audio signals. the spatial coherence is associated with perceptual importance measures. a compressed representation of the spatial coherence is determined per frequency band by weighting the spatial coherence within each frequency band according to the perceptual importance measures. information about the spectral characteristics and the compressed representation of the spatial coherence per frequency band is signaled to the receiving node for enabling the generation of the comfort noise at the receiving node.

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