Dual-orientation speaker for rendering immersive audio content

• US 10,587,982 B2
• Filed: 12/14/2016
• Issued: 03/10/2020
• Est. Priority Date: 12/18/2015
• Status: Active Grant

• Current Assignee: Dolby Laboratories Licensing Corporation (Dolby Laboratories Incorporated)
• Original Assignee: Dolby Laboratories Licensing Corporation (Dolby Laboratories Incorporated)
• Inventors: Fischer, David Matthew, Mansfield, Warren, Noel, Adam Christopher, Eggerding, Timothy James, Nicol, Philip
• Primary Examiner(s): Monikang, George C
• Application Number:
  US16/060,372
• Publication Number:
  US 20180367939A1
• Time in Patent Office: 1,182 Days
• Field of Search: 381300, 381304, 381305
• CPC Class Codes: H04R 1/26 Spatial arrangements of separate transducers responsive to two or more frequency ranges
• CPC Class Codes: H04R 1/323 for loudspeakers H04R1/34 and H04R1/40 take precedence
• CPC Class Codes: H04R 2205/024 Positioning of loudspeaker enclosures for spatial sound reproduction
• CPC Class Codes: H04R 2420/01 Input selection or mixing for amplifiers or loudspeakers for hearing aids H04R25/43
• CPC Class Codes: H04R 3/12 for distributing signals to two or more loudspeakers specially adapted for hearing aids H04R25/407
• CPC Class Codes: H04R 5/02 Spatial or constructional arrangements of loudspeakers
• CPC Class Codes: H04S 3/00 Systems employing more than two channels, e.g. quadraphonic H04S5/00, H04S7/00 take precedence
• CPC Class Codes: H04S 7/305 Electronic adaptation of stereophonic audio signals to reverberation of the listening space H04S7/301 takes precedence

Abstract

Systems and methods are described for an adaptive audio system that renders reflected sound for adaptive audio systems in different ways depending on the orientation of at least one speaker in a set of speakers. A speaker of the system may comprise an integrated speaker having front-firing and upward-firing drivers, a sensor to determine the orientation of the speaker (e.g., horizontal or vertical) and a transceiver and control unit that transmits the orientation to a decoder and receives updated speaker feeds from the renderer based on the orientation.

Claims

1. A system comprising:

at least one speaker comprising;

a cabinet housing at least one upward-firing driver and at least one front-firing driver, wherein, in a vertical orientation of the cabinet, the at least one upward-firing driver is positioned above the at least one front-firing driver;

a sensor configured to sense whether the cabinet is in the vertical orientation or in a horizontal orientation;

a transmitter for sending information to a renderer; and

a receiver for receiving a speaker feed; and

a renderer external to the at least one speaker, the renderer comprising;

a receiver for receiving information from the at least one speaker; and

a transmitter configured to transmit individual speaker feeds to each speaker, wherein each speaker feed includes at least one of a first driver feed for at least one upward-firing driver and a second driver feed for at least one front-firing driver,

wherein the transmitter of the at least one speaker is configured to send information indicative of the cabinet'"'"'s orientation sensed by the sensor to the renderer, and the receiver of the renderer is configured to receive said information, the renderer being configured to transmit a first speaker feed to the at least one speaker when the received orientation information indicates that said speaker is in the horizontal orientation and to transmit a second speaker feed to the at least one speaker, different from the first speaker feed, when the received orientation information indicates that said speaker is in the vertical orientation, and further wherein the at least one speaker comprises a processing component configured to apply a height cue filter to an audio signal for the upward-firing driver included in the second speaker feed if the cabinet is in the vertical orientation and to apply a different filter or no filter to an audio signal for the upward-firing driver included in the first speaker feed if the cabinet is in the horizontal orientation.

2. The system of claim 1, wherein the first driver feed of the first speaker feed is different from the first driver feed of the second speaker feed.

3. The system of claim 2, wherein the first driver feed of the first speaker feed has zero audio signal.

4. The system of claim 1, wherein the second speaker feed includes a first driver feed for driving the upward-firing driver, while the first speaker feed does not include a first driver feed for driving the upward-firing driver.

5. The system of claim 1, wherein the first speaker feed includes a first driver feed for driving the upward-firing driver as a side-firing driver, while the second speaker feed includes a first driver feed for driving the upward-firing driver as an upward-firing driver.

6. The system of claim 1, the wherein each receiver and transmitter respectively comprises a wireless receiver and transmitter and the renderer is configured to wirelessly receive and transmit the information and the first and second speaker feeds to the at least one speaker.

7. The system of claim 1, wherein the renderer is configured to transmit individual speaker feeds to the at least one speaker based on its respective location and orientation.

8. The system of claim 1, wherein a first speaker is placed in the horizontal orientation and a plurality of other speakers are placed in the vertical orientation, wherein the respective locations of the speakers conform to a surround sound configuration, wherein the system is configured to operate the first speaker as a front central speaker.

9. The system of claim 6, wherein the renderer and the at least one speaker are coupled over a wireless network that transmits each speaker'"'"'s respective orientation and location information, and the speaker feeds from the renderer to the at least one speaker.

10. The system of claim 1, wherein the system is suitable for rendering immersive audio content comprising channel-based audio and object-based audio including sound objects having height cues, wherein one or more of the respective upward-firing drivers of the at least one speaker are configured to play back the height cues, wherein the renderer is configured to separately generate direct signal components for playback through the front-firing driver and the height cue signals for playback through the upward-firing driver of each speaker.

11. A speaker comprising:

a cabinet housing at least one upward-firing driver and at least one front-firing driver, wherein, in a vertical orientation of the cabinet, the at least one upward-firing driver is positioned above the at least one front-firing driver;

a sensor configured to sense whether the cabinet is in the vertical orientation or in a horizontal orientation;

a transmitter configured to send information indicative of the cabinet'"'"'s orientation sensed by the sensor to an external renderer;

a receiver for receiving from the external renderer a first speaker feed when the cabinet is in the horizontal orientation and a second speaker feed, different from the first speaker feed, when the cabinet is in the vertical orientation; and

a processing component configured to apply a height cue filter to an audio signal for the upward-firing driver included in the second speaker feed if the cabinet is in the vertical orientation and to apply a different filter or no filter to an audio signal for the upward-firing driver included in the first speaker feed if the cabinet is in the horizontal orientation.

12. The speaker of claim 11 further comprising an interface for connection to a renderer, the renderer comprising:

a receiver configured to receive from one or more speakers, orientation information indicative of whether the corresponding speaker is in a vertical orientation or in a horizontal orientation,

a transmitter configured to transmit individual speaker feeds to each speaker, wherein each speaker feed includes at least one of a first driver feed for at least one upward-firing driver and a second driver feed for at least one front-firing driver,

wherein the renderer is configured to transmit a first speaker feed to a corresponding speaker when the received orientation information indicates that said speaker is in the horizontal orientation and to transmit a second speaker feed, different from the first speaker feed, when the received orientation information indicates that said speaker is in the vertical orientation.

13. A method for rendering immersive audio content in a system comprising a renderer and at least one speaker comprising at least one upward-firing driver and at least one front-firing driver, the method comprising:

detecting, by the speaker, whether the speaker is in a vertical orientation or a horizontal orientation;

transmitting, by the speaker, orientation information indicative of the detected orientation of the speaker to the renderer;

receiving, by the renderer, the orientation information sent by the speaker;

sending, by the renderer, a first speaker feed when the orientation information indicates that the speaker is in the horizontal orientation, and sending, by the renderer, a second speaker feed, different from the first speaker feed, when the orientation information indicates that the speaker is in the vertical orientation, wherein each speaker feed includes at least one of a first driver feed for the at least one upward-firing driver and a second driver feed for the at least one front-firing driver;

applying, by the speaker, a height cue filter to an audio signal included in the first driver feed of the second speaker feed if the cabinet is in the vertical orientation and to apply a different filter or no filter to an audio signal included in the first driver feed of the first speaker feed if the cabinet is in the horizontal orientation;

receiving, by the speaker, the first speaker feed or the second speaker feed respectively; and

driving the speaker according to the received first or second speaker feed.

14. The method of claim 13, further comprising:

performing the transmitting, receiving, and sending wirelessly through respective wireless receivers and transmitters in the speaker and the renderer.

15. The method of claim 13, wherein the first driver feed of the first speaker feed is different from the first driver feed of the second speaker feed, wherein preferably the first driver feed of the first speaker feed has zero audio signal.