Audio output device and controlling method thereof

Patent metadata

Field	Value
Publication number	US-10015619-B1
Application number	US-201815860090-A
Country	US
Kind code	B1
Filing date	Jan 2, 2018
Priority date	Jan 3, 2017
Publication date	Jul 3, 2018
Grant date	Jul 3, 2018

Abstract

An audio output device which outputs an audio signal that offsets a direct sound in the first speaker to offset the direct sound generated in the second speaker is provided. The audio output device according to various exemplary embodiments includes a first speaker configured to output a first audio signal, the first speaker being disposed at a first side of the audio output device, a second speaker configured to output a second audio signal, the second speaker being disposed at a second side of the audio output device, and an audio signal processor configured to control the first speaker to output the third audio signal to remove the element provided in the same direction with the first side among the second audio signal.

First claim

What is claimed is:

1. An audio output device comprising:
an input circuitry configured to receive an audio source;
an audio signal processor configured to process the audio source received by the input circuitry;
a first speaker configured to output a first audio signal received from the audio signal processor, the first speaker being disposed at a first side of the audio output device; and
a second speaker configured to output a second audio signal received from the audio signal processor, the second speaker being disposed at a second side, adjacent to the first side, of the audio output device,
wherein the audio signal processor is configured to transmit a third audio signal to the first speaker, to offset a part of the second audio signal, so that the third audio signal is output together with the first audio signal via the first speaker.

2. The audio output device as claimed in claim 1 , wherein the part of the second audio signal is a direct sound to be directly transmitted to a listener.

3. The audio output device as claimed in claim 1 , further comprising:
a third speaker configured to output a fourth audio signal, the third speaker being disposed at a third side of the audio output device,
wherein the first speaker receives the third audio signal to offset a part of the fourth audio signal from the audio signal processor, and outputs the third audio signal together with the first audio signal.

4. The audio output device as claimed in claim 1 ,
wherein the first side is positioned at a front side of the audio output device and is adapted to face a listener, and
wherein the second side is positioned at one of an upper portion or a side portion of the audio output device.

5. The audio output device as claimed in claim 1 , wherein the third audio signal is in a super position with the second audio signal, and offsets the direct sound in the second audio signal.

6. The audio output device as claimed in claim 1 , wherein the audio signal processor is configured to process the audio source as the third audio signal by using a beamforming.

7. The audio output device as claimed in claim 1 ,
wherein the audio signal processor comprises a filter capable of processing the audio source as the third audio signal by using a transfer function, and
wherein the audio signal processor is configured so that the third audio signal is to be generated using a transfer function (HF) between the first speaker and a listener, a transfer function (HR) between the second speaker and a listener, the first audio signal (XF), and the second audio signal (XH).

8. The audio output device as claimed in claim 1 , wherein, in response to a plurality of first speakers existing at the first side, the third audio signal is to be output through a first speaker nearest to the second speaker among the plurality of first speakers.

9. The audio output device as claimed in claim 1 , wherein a frequency band of the third audio signal is broader than a frequency band of the second audio signal.

10. A controlling method of an audio output device that includes a first speaker positioned at a first side and a second speaker positioned at a second side, the method comprising:
receiving an audio source that corresponds to a first audio signal to be output from the first speaker and a second audio signal to be output from the second speaker;
generating a third audio signal to offset a part of the second audio signal; and
outputting the first audio signal and the third audio signal through the first speaker, and outputting the second audio signal through the second speaker.

11. The method as claimed in claim 10 , wherein the part of the second audio signal is a direct sound directly delivered to a user.

12. The method as claimed in claim 10 ,
wherein the first side is positioned at a front side of the audio output device, and
wherein the second side is positioned at one of an upper portion or a side portion of the audio output device.

13. The method as claimed in claim 11 , wherein the third audio signal is in a super position with the second audio signal, and offsets the direct sound in the second audio signal.

14. The method as claimed in claim 10 , wherein the generating comprises generating the third audio signal by using a beamforming.

15. The method as claimed in claim 10 , wherein the generating comprises generating the third audio signal by using a transfer function (HF) between the first speaker and a listener, a transfer function (HR) between the second speaker and a listener, the first audio signal (XF), and the second audio signal (XH).

16. The method as claimed in claim 10 , wherein the outputting comprises, in response to a plurality of first speakers existing at the first side, outputting the third audio signal through a first speaker nearest to the second speaker among the plurality of first speakers.

17. The method as claimed in claim 10 , wherein a frequency band of the third audio signal is broader than a frequency band of the second audio signal.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Lee Yoon-Jae
• Song Young-Suk
• Lee Woo-Jung
• Kim Han-Ki
• Park Hae-Kwang
• Sohn Jun-Ho

Classifications

• H04S2400/01

  Multi-channel, i.e. more than two input channels, sound reproduction with two speakers wherein the multi-channel information is substantially preserved · CPC title

• H04S2420/01

  Enhancing the perception of the sound image or of the spatial distribution using head related transfer functions [HRTF's] or equivalents thereof, e.g. interaural time difference [ITD] or interaural level difference [ILD] · CPC title

• H04S7/303 Primary

  Tracking of listener position or orientation · CPC title

• H04R2203/00

  Details of circuits for transducers, loudspeakers or microphones covered by H04R3/00 but not provided for in any of its subgroups · CPC title

• H04R5/02

  Spatial or constructional arrangements of loudspeakers · CPC title