Methods, apparatus and systems for audio reproduction

Patent metadata

Field	Value
Publication number	US-11350231-B2
Application number	US-202117183360-A
Country	US
Kind code	B2
Filing date	Feb 24, 2021
Priority date	Mar 23, 2010
Publication date	May 31, 2022
Grant date	May 31, 2022

Abstract

Audio perception in local proximity to visual cues is provided. A device includes a video display, first row of audio transducers, and second row of audio transducers. The first and second rows can be vertically disposed above and below the video display. An audio transducer of the first row and an audio transducer of the second row form a column to produce, in concert, an audible signal. The perceived emanation of the audible signal is from a plane of the video display (e.g., a location of a visual cue) by weighing outputs of the audio transducers of the column. In certain embodiments, the audio transducers are spaced farther apart at a periphery for increased fidelity in a center portion of the plane and less fidelity at the periphery.

First claim

We claim:

1. A method for audio reproduction of an audio object by a playback device, the method comprising:
receiving, by a receiver, the audio object and location metadata, wherein the location metadata uniquely corresponds to the audio object, and wherein the location metadata indicates a sound reproduction location of the audio object relative to a reference screen, and wherein the location metadata further includes angle information of the audio object relative to the reference screen;
receiving display screen metadata, wherein the display screen metadata indicates information of a display screen of the playback device;
determining, by a processor, a reproduction location for sound reproduction of the audio object_relative to the display screen, wherein the reproduction location is determined based on the location metadata and the display screen metadata; and
rendering, by the playback device, the audio object at the reproduction location.

2. The method of claim 1 , wherein the audio object is a center channel audio signal.

3. The method of claim 1 , further comprising receiving a plurality of other audio signals for a front left speaker, a front right speaker, a back left speaker, and a back right speaker.

4. The method of claim 1 , wherein the location metadata corresponds to Cartesian x-y coordinates relative to the reference screen.

5. The method of claim 1 , wherein the display screen metadata indicates a plurality of aspect ratios related to the reference screen.

6. A non-transitory computer readable medium storing a computer program that, when executed by the processor, controls an apparatus to execute the method of claim 1 .

7. The method of claim 1 , wherein the audio object is one of a plurality of audio objects, wherein the location metadata includes a plurality of sound reproduction locations that each uniquely corresponds to each of the plurality of audio objects.

8. The method of claim 1 , wherein the location metadata includes timing information, wherein the timing information corresponds to an elapsed time for the audio object.

9. A playback apparatus for audio reproduction of an audio object, the playback apparatus comprising:
a first receiver for receiving an audio object and location metadata, wherein the location metadata uniquely corresponds to the audio object, and wherein the location metadata indicates a sound reproduction location of the audio object relative to a reference screen, and wherein the location metadata further includes angle information of the audio object relative to the reference screen;
a second receiver for receiving display screen metadata, wherein the display screen metadata indicates information of a display screen of the playback apparatus;
a processor for determining a reproduction location for sound reproduction of the audio object relative to a display screen, wherein the reproduction location is determined based on the location metadata and a display screen metadata; and
a renderer for rendering the audio object_at the reproduction location.

10. The playback apparatus of claim 9 , further comprising:
a plurality of speakers that is configured to output, at a second location within the display screen, the audio object rendered by the renderer.

11. The playback apparatus of claim 9 , wherein the audio object is a center channel audio signal.

12. The playback apparatus of claim 9 , wherein the location metadata corresponds to Cartesian x-y coordinates relative to the reference screen.

13. The playback apparatus of claim 9 , wherein the display screen metadata indicates a plurality of aspect ratios related to the reference screen.

14. The playback apparatus of claim 9 , wherein the receiver is further configured to receive a plurality of other audio signals for a front left speaker, a front right speaker, a back left speaker, and a back right speaker.

15. The playback apparatus of claim 9 , wherein the audio object is one of a plurality of audio objects, wherein the location metadata includes a plurality of sound reproduction locations that each uniquely corresponds to each of the plurality of audio objects.

16. The playback apparatus of claim 9 , wherein the location metadata includes timing information, wherein the timing information corresponds to an elapsed time for the audio object.

Assignees

• Dolby Laboratories Licensing Corp

Inventors

• Chabanne Christophe
• Tsingos Nicolas R
• Robinson Charles Q

Classifications

• H04R5/02 Primary

  Spatial or constructional arrangements of loudspeakers · CPC title

• H04R2499/15

  Transducers incorporated in visual displaying devices, e.g. televisions, computer displays, laptops · CPC title

• H04S2400/05

  Generation or adaptation of centre channel in multi-channel audio systems · CPC title

• H04S7/30

  Control circuits for electronic adaptation of the sound field · CPC title

• H04S3/002 Primary

  Non-adaptive circuits, e.g. manually adjustable or static, for enhancing the sound image or the spatial distribution (control circuits for electronic adaptation of the sound field H04S7/30) · CPC title