Babble noise suppression

A method of performing noise suppression of an audio signal, the audio signal including foreground speech components and background noise, the method comprising:

• determining, dynamically, a speech detection result indicating a likelihood of a presence of the foreground speech components in the audio signal;
• and computing, dynamically, spectral weighting coefficients based on the speech detection result determined and applying the spectral weighting coefficients computed to the audio signal to suppress the background noise in a dynamic manner, the method further including:
• identifying one or more spectral weighting coefficients from the spectral weighting coefficients computed based on contextual information from neighboring spectral weighting coefficients;
• and post-processing the spectral weighting coefficients computed by setting first values computed for the one or more spectral weighting coefficients identified to second values, the second values enabling a stronger attenuation of the background noise than the first values, and further wherein the applying includes applying the spectral weighting coefficients computed and post-processed.

A system configured to perform noise suppression of an audio signal, the audio signal including foreground speech components and background noise, the system comprising:

• a soft speech detector configured to determine, dynamically, a speech detection result indicating a likelihood of a presence of the foreground speech components in the audio signal;
• and a noise suppressor communicatively coupled to the soft speech detector to receive the speech detection result determined and configured to compute, dynamically, spectral weighting coefficients based on the speech detection result determined and apply the spectral weighting coefficients computed to the audio signal to suppress the background noise in a dynamic manner, wherein the noise suppressor is further configured to:
• identify one or more spectral weighting coefficients from the spectral weighting coefficients computed based on contextual information from neighboring spectral weighting coefficients;
• and post-process the spectral weighting coefficients computed by setting first values computed for the one or more spectral weighting coefficients identified to second values, the second values enabling a stronger attenuation of the background noise than the first values, and further wherein the applying includes applying the spectral weighting coefficients computed and post-processed.