FIELD: physics, computer engineering.
SUBSTANCE: invention relates to computer engineering. A method of maintaining speech audibility in a multi-channel audio signal, comprising comparing a first characteristic and a second characteristic of the multi-channel audio signal to generate an attenuation factor, wherein the first characteristic corresponds to a first channel of the multi-channel audio signal that contains speech audio and non-speech audio, wherein the second characteristic corresponds to a second channel of the multi-channel audio signal that contains predominantly non-speech audio; adjusting a gain applied to a second power spectrum until the predicted speech intelligibility meets a criterion; and using the adjusted gain as the attenuation factor once the predicted speech intelligibility meets the criterion; adjusting the attenuation factor according to a speech likelihood value to generate an adjusted attenuation factor; and attenuating the second channel using the adjusted attenuation factor.
EFFECT: improved speech audibility in a multi-channel audio signal.
14 cl, 5 dwg
