Patent ID: 9324337
Filing Date: 2016-04-26
CPC Classification: G10L

Claim Text:
1. A method for enhancing dialog determined by an audio input signal, said method including the steps of: (a) analyzing the input signal to generate filter control values without use of feedback; and (b) providing at least one of the control values to a peaking filter, filtering a speech channel determined by the input signal in the peaking filter in a manner steered by said at least one of the control values to generate a dialog-enhanced speech channel, and attenuating non-speech channels determined by the input signal in ducking circuitry steered by at least a subset of the control values to generate attenuated non-speech channels, where the control values are distinct from the speech channel, the control values are distinct from the non-speech channels, the peaking filter is distinct from the ducking circuitry, the peaking filter is coupled and configured to filter the speech channel but not the non-speech channels, the ducking circuitry is coupled and configured to attenuate the non-speech channels but not the speech channel, the peaking filter is configured to emphasize frequency components of the speech channel in a frequency range critical to intelligibility of speech, relative to frequency components of the speech channel outside the frequency range, and said frequency range has a center frequency, wherein the step of attenuating the non-speech channels includes reducing gain application to the non-speech channels in response to a change in said at least a subset of the control values indicative of increase of power of the speech channel relative to combined power of the non-speech channels, and the step of filtering the speech channel includes applying more gain to the frequency components of the speech channel at the center frequency in response to a change in said at least one of the control values indicative of an increase in power of the speech channel relative to power of at least one of the non-speech channels.