METHOD AND DEVICE FOR PROCESSING BINAURAL AUDIO SIGNAL

• US 20180091919A1
• Filed: 11/29/2017
• Published: 03/29/2018
• Est. Priority Date: 09/23/2016
• Status: Active Grant

• Current Assignee: G'Audio Lab, Inc.
• Original Assignee: GAUDIO LAB, Inc.
• Inventors: CHON, Sangbae, LEE, Taegyu, OH, Hyunoh
• Granted Patent: US 10,659,904 B2
• Time in Patent Office: Days
• CPC Class Codes: H04S 2400/01 Multi-channel, i.e. more than two input channels, sound reproduction with two speakers wherein the multi-channel information is substantially preserved
• CPC Class Codes: H04S 2400/11 Positioning of individual sound objects, e.g. moving airplane, within a sound field H04S2420/13 takes precedence
• CPC Class Codes: H04S 2420/01 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 Class Codes: H04S 2420/11 Application of ambisonics in stereophonic audio systems
• CPC Class Codes: H04S 3/008 in which the audio signals are in digital form, i.e. employing more than two discrete digital channels data reduction aspects thereof based on psychoacoustics G10L19/02
• CPC Class Codes: H04S 7/303 Tracking of listener position or orientation

Abstract

An audio signal processing device for processing an audio signal may include a receiving unit configured to receive an audio file including the audio signal, a processor configured to simultaneously render a first audio signal component included in a first track of the audio file and a second audio signal component included in a second track of the audio file, and an output unit configured to output the rendered first audio signal component and the rendered second audio signal component.

Claims

1. An audio signal processing device for rendering an audio signal, comprising:

a receiving unit configured to receive an audio file comprising the audio signal;

a processor configured to simultaneously render a first audio signal component included in a first track of the audio file and a second audio signal component included in a second track of the audio file; and

an output unit configured to output the rendered first audio signal component and the rendered second audio signal component.

2. The audio signal processing device of claim 1, wherein channels supported by each of the first track and the second track are fewer than channels of the audio signal.

3. The audio signal processing device of claim 2, wherein the first track is a track included in a pre-designated location among a plurality of tracks of the audio file.

4. The audio signal processing device of claim 3, wherein the first audio signal component is able to be rendered without metadata comprising a location of a sound image simulated by the audio signal.

5. The audio signal processing device of claim 3, wherein the first audio signal component is able to be rendered without metadata for binaural rendering.

6. The audio signal processing device of claim 3,

wherein the first track comprises metadata, and

wherein the processor is configured to determine, on the basis of the metadata, which one or more among a plurality of tracks of the audio file comprise an audio signal component.

7. The audio signal processing device of claim 5, wherein the processor is configured to render the first audio signal component and the second audio signal component on the basis of the metadata.

8. The audio signal processing device of claim 3, wherein the processor is configured to check whether the plurality of tracks of the audio file comprise an audio signal component of the audio signal in a pre-designated track order.

9. The audio signal processing device of claim 1, wherein the processor is configured to select the first audio signal component and the second audio signal component among a plurality of audio signal components included in a plurality of tracks of the audio file according to a capability of the audio signal processing device.

10. An audio signal processing device for processing an audio signal to transfer the audio signal, comprising:

a receiving unit configured to receive the audio signal;

a processor configured to generate an audio file comprising a first audio signal component of the audio signal in a first track and a second audio signal component of the audio signal in a second track; and

an output unit configured to output the audio file.

11. The audio signal processing device of claim 10, wherein channels supported by each of the first track and the second track are fewer than channels of the audio signal.

12. The audio signal processing device of claim 10, wherein the first track is a track included in a pre-designated location among a plurality of tracks of the audio file.

13. The audio signal processing device of claim 12, wherein the first audio signal component is able to be rendered without metadata including a location of a sound image simulated by the audio signal.

14. The audio signal processing device of claim 12, wherein the first audio signal component is able to be rendered without metadata for binaural rendering.

15. The audio signal processing device of claim 12,

wherein the processor is configured to insert metadata into the first track, and

wherein the metadata indicates one or more tracks comprising an audio signal component of the audio signal among a plurality of tracks of the audio file.

16. The audio signal processing device of claim 12, wherein the processor is configured to insert a plurality of audio signal components of the audio signal into the plurality of tracks of the audio file in a pre-designated order.

17. A audio signal processing device, comprising:

one or more processors; and

memory including instructions executable by the one or more processors to cause the device to at least;

receive an audio file comprising the audio signal, wherein a plurality of audio signal components of the audio signal are divided and inserted into a plurality of tracks included in the audio signal;

simultaneously render the plurality of audio signal components included in the plurality of tracks of the audio file; and

output the plurality of audio signal components simultaneously rendered.

18. The audio signal processing device of claim 17, wherein channels supported by each of the plurality of tracks are fewer than channels of the audio signal.

19. The audio signal processing device of claim 17, wherein metadata is comprised in at least one track included in a pre-designated location among the plurality of tracks, and the one or more processors are configured to simultaneously render the plurality of audio signal components by using the metadata.

20. The audio signal processing device of claim 17, wherein metadata is comprised in at least one track included in a pre-designated location among the plurality of tracks, and the one or more processors are configured to determine whether to render the audio signal by reflecting a location of a sound image simulated by the audio signal by using the metadata.