Dolby Laboratories Licensing Corporation

Charles Phillip Brown

Alan Jeffrey Seefeldt

Brett Graham Crockett

Rongshan Yu

A method and system for enhancing dialog determined by an audio input signal. In some embodiments the input signal is a stereo signal, and the system includes an analysis subsystem configured to analyze the stereo signal to generate filter control values, and a filtering subsystem including upmixing circuitry configured to upmix the input signal to generate a speech channel and non-speech channels and a peaking filter configured to filter the speech channel to enhance dialog while being steered by at least one of the control values. The filtering subsystem also includes ducking circuitry for attenuating the non-speech channels while being steered by at least some of the control values, and downmixing circuitry configured to combine outputs of the peaking filter and ducking circuitry to generate a filtered stereo output. In some embodiments, the system is configured to downmix a multichannel input signal to generate a downmixed stereo signal, an analysis subsystem is configured to analyze the downmixed stereo signal to generate filter control values, and a filtering subsystem is configured to generate a dialog-enhanced audio signal in response to the input signal while being steered by at least some of the filter control values. Preferably, the filter control values are generated without use of feedback including by generating power ratios (for pairs of speech and non-speech channels) and preferably also shaping in nonlinear fashion and scaling at least one of the power ratios.

Method and system for dialog enhancement

A method for an audio/video (A/V) system includes accessing processing modules for downloadable applications. Each downloadable application can have at least one processing module and data for a graphical user interface (GUI), and each processing module can be configured to interact with an upgradable engine to adjust a performance or a setting of an audio and video (A/V) equipment. The method includes arranging an order of two or more of the processing modules in a processing chain to share processing resources, to reduce a processing requirement of the A/V equipment, or to enhance a level of performance of the A/V equipment.

Hierarchy and processing order control of downloadable and upgradeable media processing applications

An audio/video (A/V) system includes an audio/video (A/V) component configured to generate audio or video data. The A/V system includes one or more processing devices configured to implement an audio or video processing engine to process the audio or video data to generate one or more different domain representations of the audio or video data. The A/V system includes one or more audio or video processing applications that are each configured to access one or more of the different domain representations of the audio or video data, and to perform audio or video processing on the one or more accessed domain representations of the audio or video data. Each of the one or more processing applications access and process the domain representations independently of each other.

Upgradeable engine framework for audio and video

A method for enhancing speech components of an audio signal composed of speech and noise components processes subbands of the audio signal, the processing including controlling the gain of the audio signal in ones of the subbands, wherein the gain in a subband is controlled at least by processes that convey either additive/subtractive differences in gain or multiplicative ratios of gain so as to reduce gain in a subband as the level of noise components increases with respect to the level of speech components in the subband and increase gain in a subband when speech components are present in subbands of the audio signal, the processes each responding to subbands of the audio signal and controlling gain independently of each other to provide a processed subband audio signal.

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Castro Valley, CA, United States of America

Charles Phillip Brown