公开(公告)号：US10939222B2

公开(公告)日：2021-03-02

申请号：US16636188

申请日：2017-11-14

Applicant: LG ELECTRONICS INC.

Inventor： Tung Chin Lee ,  Sejin Oh

IPC: H04S7/00 ,  G10L19/00 ,  H04R3/00 ,  G10L19/008 ,  H04R3/12

Abstract: A three-dimensional audio playing method and playing apparatus are disclosed. The three-dimensional audio playing method according to the present invention comprises: a decoding step of decoding a received audio signal and outputting the decoded audio signal and metadata; a room impulse response (RIR) decoding step of decoding RIR data when the RIR data is included in the received audio signal; a head-related impulse response (HRIR) generation step of generating HRIR data by using user head information when the RIR data is included in the received audio signal; a binaural room impulse response (BRIR) synthesis step of generating BRIR data by synthesizing the decoded RIR data and modeled HRIR data; and a binaural rendering step of outputting a binaural rendered audio signal by applying the generated BRIR data to the decoded audio signal. In addition, the three-dimensional audio playing method and playing apparatus, according to the present invention, support a 3DoF environment and a 6DoF environment. Moreover, the three-dimensional audio playing method and playing apparatus according to the present invention provide parameterized BRIR or RIR data. The three-dimensional audio playing method according to an embodiment of the present invention enables a more stereophonic and realistic three-dimensional audio signal to be provided.

公开(公告)号：US10757392B2

公开(公告)日：2020-08-25

申请号：US16702621

申请日：2019-12-04

Applicant: LG ELECTRONICS INC.

Inventor： Soojin Hwang ,  Sejin Oh ,  Tung Chin Lee

IPC: H04N7/18 ,  H04N13/183 ,  H04N21/845 ,  H04N21/488 ,  H04N19/70 ,  H04N13/156 ,  H04N21/81 ,  H04N13/194 ,  H04N13/178 ,  H04N13/128 ,  H04N19/88 ,  H04N13/161

Abstract: The present invention suggests a method of providing subtitles for a 360 content, the method comprising: generating 360 video data captured by at least one camera; stitching the 360 video data; projecting the 360 video data to a 2D image; encoding the 2D image into a video stream; generating a 360 subtitle Supplemental Enhancement Information (SEI) message for signaling a subtitle for the 360 content; inserting the 360 subtitle SEI message into the video stream; and generating a broadcast signal including the video stream, and transmitting the broadcast signal.

公开(公告)号：US09980077B2

公开(公告)日：2018-05-22

申请号：US15674045

申请日：2017-08-10

Applicant: LG ELECTRONICS INC.

Inventor： Tung Chin Lee ,  Jongyeul Suh ,  Ling Li

IPC: H04R5/00 ,  H04S7/00 ,  H04S3/00

CPC classification number: H04S7/303 ,  H04R2227/003 ,  H04S1/007 ,  H04S3/008 ,  H04S7/305 ,  H04S2400/01 ,  H04S2400/03 ,  H04S2400/11 ,  H04S2400/15 ,  H04S2420/01

Abstract: A method of interpolating a head-related transfer function (HRTF) and an audio output apparatus using the same are disclosed. The method includes receiving HRTF data corresponding to a point at which an altitude angle and an azimuth angle cross and receiving complementary information about a point at which the HRTF data is present, generating an HRTF interpolation signal corresponding to an altitude angle of a sound localization point, using HRTF data corresponding to two points constituting an altitude angle segment nearest the sound location point, calculating an amount of variation up to an azimuth angle θ of the sound localization point, using complementary information of two points constituting an azimuth angle segment nearest the sound localization point, and generating a final HRTF interpolation signal corresponding to the sound localization point by applying the amount of variation to the HRTF interpolation signal corresponding to the altitude angle of the sound localization point.