Dolby Laboratories Licensing Corporation

Eugene Edward Radzik

Alan Jeffrey Seefeldt

David S McGrath

C Phillip Brown

Michael John Smithers

David Matthew Fischer

Timothy James Eggerding

Warren Mansfield

Adam Christopher Noel

Jared Smith

David S Mcgrath

Embodiments are directed to speakers and circuits that reflect sound off a wall surface () to a listening location at a distance from a speaker. The reflected sound () provides direct audio cues to reproduce audio objects that have direct audio components without the need for direct firing speakers. The speaker comprises sideward firing drivers () to reflect sound off of the wall surface () and represents a virtual direct speaker (). A virtual direct filter is applied to the sideward-firing driver signal to improve the perception of direct audio transmitted by the sideward firing speaker () to provide optimum reproduction of the reflected sound. The virtual direct filter may be incorporated as part of a crossover circuit that separates the full band and sends high frequency sound to the sideward-firing driver ().

Reflected sound rendering using downward firing drivers

Improved methods and devices for processing low-frequency audio data are provided. A bass extraction process may involve applying low-pass filters to received audio object signals, to produce extracted low-frequency audio signals. The bass extraction process may be performed prior to a process of rendering audio objects into speaker feed signals. A bass management process may involve routing the extracted low-frequency audio signals to the one or more speakers capable of reproducing low-frequency audio signals.

Bass management for audio rendering

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San Leandro, CA, United States of America

Eugene Edward Radzik