Abstract:
1. 청구범위에 기재된 발명이 속한 기술분야 다채널로 구성된 다객체 오디오 신호의 인코딩 및 디코딩에 관한 것임. 2. 발명이 해결하고자 하는 기술적 과제 다채널로 구성된 다객체 오디오 신호를 인코딩 및 디코딩하는 장치 및 방법을 제공함. 3. 발명의 해결방법의 요지 다수의 채널로 구성된 오디오 신호를 다운믹스하고, 상기 다수의 채널로 구성된 오디오 신호에 대한 공간큐를 생성하며, 상기 생성된 공간큐를 포함하는 제1랜더링정보를 생성하는 다채널 인코딩 수단; 및 다수의 객체로 구성된 오디오 신호-상기 다수의 객체로 구성된 오디오 신호는 상기 다채널 인코딩 수단에 의해 다운믹스된 신호를 포함함-를 다운믹스하고, 상기 다수의 객체로 구성된 오디오 신호에 대한 공간큐를 생성하며, 상기 생성된 공간큐를 포함하는 제2랜더링정보를 생성하는 다객체 인코딩 수단을 포함하되, 상기 다객체 인코딩 수단은 상기 다채널 인코딩 수단이 제한받는 코덱 스킴에 제한받지 않고 상기 다수의 객체로 구성된 오디오 신호에 대한 공간큐를 생성하는 오디오 인코딩 장치를 제공함. 4. 발명의 중요한 용도 오디오 신호의 인코딩 및 디코딩에서 이용됨. 다채널, 다객체, 오디오, 인코딩, 디코딩
Abstract:
A multimedia data generation device and method, and a multimedia data playback device and method are disclosed. The multimedia data generation device comprises a spatial information identification unit for identifying spatial information in respective channels of a multi-channel audio signal and a multimedia data generation unit for generating multimedia data including the spatial information. The multimedia data playback device comprises a spatial information analysis unit for analyzing spatial information in the respective channels of the multi-channel audio signal included in the multimedia data and a multimedia data playback unit for reproducing the multimedia data based on the spatial information.
Abstract:
Disclosed herein are an apparatus and a method for controlling sound in the open air. The sound controlling apparatus comprises: a mixer for generating a first sound by mixing audio signals; and a directivity controlling unit for controlling directivity of the first sound to prevent a leak of the first sound to the outside of a sound reaching space. [Reference numerals] (302) Mixer; (303) Directivity control unit; (AA) Microphone 1; (BB) Microphone 2; (CC) Microphone N; (DD) Speaker 1; (EE) Speaker 2; (FF) Speaker M
Abstract:
An audio data providing method, a device thereof, an audio metadata providing method, a device thereof, an audio data play method, and a device thereof are disclosed. The audio data providing method includes a step of generating audio metadata including audio object information and audio channel information of audio raw data, a step of generating audio data by combining the raw data with the metadata, and a step of transmitting the audio data to the audio data play device. [Reference numerals] (210) Audio data providing device;(220) Audio metadata generating unit;(230) Audio data generating unit;(240) Audio data transmitting unit;(250) Audio data playing device;(260) Audio data receiving unit;(270) Audio metadata analyzing unit;(280) Audio raw data playing unit
Abstract:
PURPOSE: A front wave field synthesis (WFS) system and a method for providing surround sound using a 7.1 channel codec are provided to install fewer loud speakers and offer a wave field effect. CONSTITUTION: A front WFS system includes a front WFS signal encoding device (110). The front WFS signal encoding device includes a content receiving unit (111) and an encoding unit (112). The content receiving unit receives WFS content including first channels corresponding to a front array speaker and second channels corresponding to a surround speaker. The encoding unit encodes the first channel and the second channel by a multi-channel encoder corresponding to the number of channels included in the WFS content. The encoding unit performs encoding by inputting the first channel and the second channel to the multi-channel encoder according to the condition for identifying the first and second channels. [Reference numerals] (110) Front WFS signal encoding device; (111) Content receiving unit; (112) Encoding unit; (113) Signal transmitting unit; (120) Front WFS signal decoding device; (121) Decoding unit; (122) Channel classifying unit; (123) Channel transmitting unit
Abstract:
PURPOSE: An encoding device for supporting a scalable multi-channel audio signal, a decoding device, and a method thereof are provided to restore and compress a multi-channel audio signal for providing three-dimensional audio in a realistic broadcasting environment. CONSTITUTION: A signal generator(201) generates a compatible multi-channel audio signal using a multi-channel audio signal and an audio object signal. An encoding unit(202) generates a first bit stream through a hierarchical encoding of the compatible multi-channel audio signal. A second encoding unit(203) generates a second bit stream through the encoding of the audio object signal. A bit stream formatter(204) generates an output bit stream using the first and second bit streams. [Reference numerals] (101) Encoding device; (201) Signal generator; (202) First encoding unit; (203) Second encoding unit; (204) Bit stream formatter; (AA) Multichannel audio signal; (BB) Audio object signal; (CC) Compatible multichannel audio signal; (DD) Second bit stream; (EE) First bit stream; (FF) First additional information; (GG) Second additional information; (HH) Third additional information; (II) Output bit stream
Abstract:
PURPOSE: A method and apparatus for reproducing a 3 dimensional sound field are provided to improve robustness of the apparatus by evenly distributing energy of source strength. CONSTITUTION: A control region is determined based on a wavelength of an excitation frequency(101). One or more candidate control points are arranged on the control region based on a loud speaker array(102). A non-uniform control point corresponding to a non-uniform loudspeaker is determined from the candidate control points(103). The non-uniform control point to be added to the control point is determined(104). Determination of the non-uniform control point is performed based on an inner product of a target unit vector corresponding to the target control point and a candidate unit vector corresponding to the candidate control point. [Reference numerals] (101) Control region determination; (102) Arrangement of a candidate control point; (103) Determination of a non-uniform control point corresponding to a non-uniform loudspeaker; (104) Determination of adding the non-uniform control point to the control point; (AA) Start; (BB) End
Abstract:
PURPOSE: A down-mixing apparatus of a sound field synthesis signal and a method thereof are provided to reproduce optimized sound field synthesis signal in a multi-channel audio reproducing system in a lower multi-channel audio play system. CONSTITUTION: A reproducing location information estimating unit(110) estimates reproducing location information of an inputted sound field mixing signal. A main signal estimating unit(120) estimates a main signal of the sound field signal based on reproducing location information. A sound image fixing information estimating unit(130) estimates the sound field synthesis signal based on the main signal.
Abstract:
PURPOSE: A device for restoring multichannel audio signal using an HE-AAC(High-Efficiency Advanced Audio Coding) decoder and an MPEG surround decoder and a method thereof are provided to add a delay stage when connecting a downmix signal of the HE-AAC decoder to a QMF(Quadrature Mirror Filter) signal of the real number domain, a QMF signal of the complex number domain, and a time domain signal. CONSTITUTION: When a downmix signal of a time domain encoded by HE-AAC is combined with an MPEG surround low power decoder, a delay stage(501) applies delay to extracted spatial parameters. The delay is identical to the sum of the delay of HE-AAC QMF synthetic filter process, real QMF(502) and Nyquist analysis filter(504) process of the MPEG surround low power decoder, and a real to complex converter(503).
Abstract:
1. 청구범위에 기재된 발명이 속한 기술분야 본 발명은 적응적 스캐닝을 이용한 동영상 부호화/복호화 장치 및 그 방법에 관한 것임. 2. 발명이 해결하려고 하는 기술적 과제 본 발명은 동영상을 부호화하는데 있어서 소정 크기의 블록에 대한 인트라 예측 수행 후, 잔차 신호의 DCT 및 양자화된 계수에 대한 스캐닝 방법을 인트라 예측 모드에 따라 적응적으로 적용함으로써, 압축률을 높일 수 있는 적응적 스캐닝을 이용한 동영상 부호화 장치 및 방법과 그에 따른 복호화 장치를 제공하는데 그 목적이 있음. 3. 발명의 해결방법의 요지 본 발명은 적응적 스캐닝을 이용한 동영상 부호화 장치로서, 예측 모드를 선택하여 출력하기 위한 모드 선택 수단; 상기 예측 모드에 따라 입력 영상의 부호화할 화소 값들을 예측하여, 잔차 신호 블록을 출력하기 위한 예측 수단; 상기 잔차 신호 블록을 DCT 변환하고 양자화하기 위한 변환/양자화 수단; 및 상기 양자화된 잔차 신호 블록을 상기 예측 모드에 따라 적응적으로 스캐닝하여 부호화하기 위한 부호화 수단을 포함함. 4. 발명의 중요한 용도 본 발명은 동영상 부호화 시스템 등에 이용됨. 인트라 예측, DCT 계수, 스캐닝, 인코딩