Automatic discovery and localization of speaker locations in surround sound systems

A loudspeaker position and loudspeaker technology, applied in the arrangement of the loudspeaker shell, the spatial/structural arrangement of the loudspeaker, the stereo system, etc., can solve the problem of the non-optimal placement of the loudspeaker

Pending Publication Date: 2019-05-21
DOLBY LAB LICENSING CORP +1
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  • Automatic discovery and localization of speaker locations in surround sound systems
  • Automatic discovery and localization of speaker locations in surround sound systems
  • Automatic discovery and localization of speaker locations in surround sound systems

Examples

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Embodiment Construction

[0025] Systems and methods are described for an automatic speaker discovery process that uses multiple arrival times and delay data to locate speakers in a room, but embodiments are not limited thereto. Aspects of one or more embodiments described herein may be implemented in an audio or audiovisual system that plays back source audio information produced in a presentation / encoding system with a decoding / playback system, wherein the presentation and playback system Both include one or more computers or processing devices that execute software instructions. Any of the described embodiments may be used alone or together in any combination. While the various embodiments may have been motivated by various deficiencies of the prior art which may be discussed or referred to in one or more places in the specification, the embodiments do not necessarily address any of these deficiencies . In other words, different embodiments may address different deficiencies that may be discussed ...

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Abstract

Embodiments are described for a method for localizing a set of speakers (106) and microphones (108), having only the times of arrival between each of the speakers and microphones. An autodiscovery process (107) uses an external input to set: a global translation (3 continuous parameters), a global rotation (3 continuous parameters), and discrete symmetries, i.e., an exchange of any axis pairs and/or reversal of any axis. Different time of arrival acquisition techniques may be used, such as ultrasonic sweeps or generic multitrack audio content. The autodiscovery algorithm is based in minimizinga certain cost function, and the process allows for latencies in the recordings, possibly linked to the latencies in the emission.

Description

technical field [0001] One or more implementations relate generally to surround sound speaker systems, and more specifically to automatically determining speaker positions in a listening environment. [0002] Copyright Notice [0003] Portions of the disclosure of this patent document contain material that is protected by copyright. The copyright owner has no objection to the facsimile reproduction by anyone of the patent document or the patent disclosure, as it appears in the Patent and Trademark Office patent files or records, but otherwise reserves all copyrights. Background technique [0004] A surround sound speaker system includes several speakers as well as Low Frequency Effects (LFE) speakers (subwoofers), which are designed to be placed at designated locations in a room to provide an audio surround effect of 360 degrees of sound in the horizontal plane. In most cases, a surround sound system maps each source channel to its own speakers. Many different surround so...

Claims

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Application Information

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IPC IPC(8): G01S5/18H04R5/04H04S7/00
CPCG01S5/18H04R2205/024H04R5/04H04S7/301H04S2400/11H04R5/02H04S3/00H04S2420/03H04R5/027H04R3/12H04S2400/01H04R2420/05H04R2420/07H04R3/005H04S7/305
Inventor D·阿提加G·圣高尔D·M·费舍尔A·玛蒂奥斯索尔D·斯凯尼A·J·希菲尔德
Owner DOLBY LAB LICENSING CORP
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