Dolby Laboratories

About: Dolby Laboratories is a company organization based out in Amsterdam, Netherlands. It is known for research contribution in the topics: Audio signal & Audio signal flow. The organization has 956 authors who have published 1726 publications receiving 29456 citations.

Signal Decorrelation in an Audio Processing System

Abstract: Audio processing methods may involve receiving audio data corresponding to a plurality of audio channels. The audio data may include a frequency domain representation corresponding to filterbank coefficients of an audio encoding or processing system. A decorrelation process may be performed with the same filterbank coefficients used by the audio encoding or processing system. The decorrelation process may be performed without converting coefficients of the frequency domain representation to another frequency domain or time domain representation. The decorrelation process may involve selective or signal-adaptive decorrelation of specific channels and/or specific frequency bands. The decorrelation process may involve applying a decorrelation filter to a portion of the received audio data to produce filtered audio data. The decorrelation process may involve using a non-hierarchal mixer to combine a direct portion of the received audio data with the filtered audio data according to spatial parameters.

Processing audio data to compensate for partial hearing loss or an adverse hearing environment

Abstract: Methods a provided for improving an audio scene for people suffering from hearing loss or for adverse hearing environments Audio objects may be prioritized In some implementations, audio objects that correspond to dialogue may be assigned to a highest priority level Other implementations may involve assigning the highest priority to other types of audio objects, such as audio objects that correspond to events During a process of dynamic range compression, higher-priority objects may be boosted more, or cut less, than lower-priority objects Some lower-priority audio objects may fall below the threshold of human hearing, in which case the audio objects may be dropped and not rendered

Are Movies Too Loud

Abstract: Over the past few years, the subject of movies getting louder has generated increasing concern within the film production community. In addition, it has become commonplace for moviegoers to claim that movies are too loud. Many theatres now project films at an audio fader setting below the calibration setting that would match that in the dubbing theatre, presumably because of audience complaints. The following material discusses some of the issues that can be described as sound-track loudness. What is a measure of loudness for a movie? Why do theatres turn the sound down? Have new sound formats (Dolby SR and more recently the digital formats, Dolby SR.D, Sony SDDS, and DTS) exacerbated the perceived loudness problem? This paper describes an investigation aimed at defining perceived long-term sound-track loudness with a meter reading, and some data are presented.

Speaker identification using spatial information

Abstract: Embodiments of the present invention relate to speaker identification using spatial information. A method of speaker identification for audio content being of a format based on multiple channels is disclosed. The method comprises extracting, from a first audio clip in the format, a plurality of spatial acoustic features across the multiple channels and location information, the first audio clip containing voices from a speaker, and constructing a first model for the speaker based on the spatial acoustic features and the location information, the first model indicating a characteristic of the voices from the speaker. The method further comprises identifying whether the audio content contains voices from the speaker based on the first model. Corresponding system and computer program product are also disclosed.

Hybrid reference picture reconstruction method for single and multiple layered video coding systems

Abstract: An inter-layer reference picture is generated either by considering an inverse mapped signal from a base layer, a temporal signal from an enhancement layer, or a combination of both.