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.

Method and System for Color-Grading Multi-View Content

Abstract: Methods and apparatus for color grading stereoscopic and autostereoscopic (multi-view) view video content are provided. Video content for one view is adjusted so that a histogram of the adjusted video data is more similar to a target histogram than the original, unadjusted video content for the one view. The adjusted video content is automatically color graded based on a color grading of video content for another view. The target histogram may be calculated for the video content for the other view.

Time-base correction of audio signals in video tape recorders

Abstract: The time-base corrector of this invention corrects the time-base of audio signals reproduced from video tapes without correcting the time-base of video signals which are associated with the audio signals Reference signals such as the horizontal synchronizing pulses which accompany video information are used for correcting the time-base of audio signals if such reference signals have been subjected to substantially the same time compression or expansion as the audio signals In the preferred embodiment, the reproduced audio signals are sampled and written into a sampled data delay and read out of it by means of a control circuit The control circuit receives as input the undistorted reference signal and the reproduced reference signal which has undergone time compression or expansion The control circuit derives a write clock signal with a frequency equal to k times the frequency of the distorted reference signal The reproduced (and therefore time compressed or expanded) audio signal is sampled and read into the sampled data delay by the write clock signal The audio signal stored in the sampled data delay is then read by the control circuit at a frequency of a read clock signal with a frequency equal to k times the frequency of the undistorted reference signal The audio signal read in the above manner will be time-base corrected

System and method of enabling content output on a digital device

Abstract: In one embodiment the present invention includes a system and method of distributing content. Authorization information is encoded with the content. When received and decoded, if a particular device output is authorized by the authorization information, then the content is output. By encoding the authorization information along with the content, unauthorized display of the content is reduced.

Immersive Audio Coding for Virtual Reality Using a Metadata-assisted Extension of the 3GPP EVS Codec

Abstract: Virtual Reality (VR) audio scenes may be composed of a very large number of audio elements, including dynamic audio objects, fixed audio channels and scene-based audio elements such as Higher Order Ambisonics (HOA). Potentially, the subjective listening experience may be replicated using a compact spatial format with a set number of dynamic objects and scene-based elements, retaining only the perceptual essence of the audio scene. The compact format would further enable a reduction in the complexity of subsequent compression and rendering. This paper investigates these hypotheses by exploring the use of a compact format that consists of up to four dynamic objects and nine HOA channels, with the Enhanced Voice Services (EVS) codec being applied to a 4-channel down-mix of the compact format.

Adjustable free-running secure clock

Abstract: A free-running secure clock in a computing device that is adjustable by a user of the device so long as cumulative adjustments do not exceed a predicted clock drift. The clock may be initially set by the user or by a trusted time authority or the like. Such a clock may be required in a trust-based system that measures a temporal requirement against the clock.