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    • 2. 发明公开
    • SAC 부가정보를 이용한 3D 바이노럴 필터링 시스템 및 방법
    • 使用光谱音频编码信息的3D三维滤波系统及其方法
    • KR1020100106193A
    • 2010-10-01
    • KR1020090116054
    • 2009-11-27
    • 한국전자통신연구원주식회사 이머시스
    • 서정일이용주강경옥김현석김풍민
    • G10L19/008H04S3/00H04N7/24G11B20/10
    • PURPOSE: A 3D binaural filtering system using SAC(Spectral Audio Doding) side information and a method thereof are provided to reduce the deterioration of sound quality in a binaural filtering procedure by outputting a 3D binaural signal without restoring a multi-channel audio signal through additional SAC information. CONSTITUTION: A stereo decoder(S110) outputs a PCM(Pulse Code Modulation) signal by decoding a downmix audio bitstream which constitutes a multichannel audio signal through terrestrial DMB(Digital Multimedia Broadcasting) and satellite DMB. An additional information analyzer(S130) extracts multichannel audio reproduction feature parameters through the analysis of additional information bistratem which constitutes the multichannel audio signal. A binaural filtering unit(S150) outputs a 3D binaural signal from a downmix audio signal through the multichannel audio reproduction feature parameters.
    • 目的:提供使用SAC(频谱音频编码)侧信息的三维双耳滤波系统及其方法,以通过输出3D双耳信号而不通过附加的多声道音频信号来恢复双耳滤波过程中的声音质量的劣化 SAC信息。 构成:立体声解码器(S110)通过解码通过地面DMB(数字多媒体广播)和卫星DMB构成多声道音频信号的下混音频比特流来输出PCM(脉冲编码调制)信号。 附加信息分析器(S130)通过分析构成多声道音频信号的附加信息双速提取来提取多声道音频再现特征参数。 双耳滤波单元(S150)通过多声道音频再现特征参数从下混音频信号输出3D双耳信号。
    • 6. 发明公开
    • 멀티채널 스피커에서 실시간으로 크로스톡을 제거하여 입체음향을 재생하는 시스템
    • 通过实时移除多通道扬声器中的十字路口再现3D声音的方法和系统
    • KR1020010096678A
    • 2001-11-08
    • KR1020010041323
    • 2001-07-10
    • 주식회사 이머시스
    • 김풍민김현석금종룡배희연이균이동우이진성최용석
    • H04S3/00
    • PURPOSE: A method and system for reproducing a 3D sound by removing cross-talk in a multichannel speaker in real time is provided to improve a sound position effect, enhance an environmental effect, realize an optimized 3D sound and drastically improve product quality and reliability. CONSTITUTION: A head related transfer function database(13) gathers a head related transfer function in a database when a speaker(1-7) and a listener(30) are located within a standard radius by channel. A location information unit(21) detects a location information with an angle, a distance between the listener(30) and the multichannel speaker(23) when a sound source(11) is inputted. A spatial information unit(12) removes a cross-talk phenomenon of the speakers(23) positioned within a preset area by channel by using the head related transfer function database(13) and the stored spatial information. A signal distributer(22) distributes signals to the speakers after the location information unit(21) obtains the speaker information when the sound source(11) is transferred to the signal distributer(22) through a cross-talk remover(14).
    • 目的:提供一种通过实时消除多声道扬声器中的串扰来再现3D声音的方法和系统,以改善声音位置效果,增强环境效果,实现优化的3D声音,并显着提高产品质量和可靠性。 构成:当扬声器(1-7)和收听者(30)位于标准半径范围内时,头部相关传输函数数据库(13)在数据库中收集头部相关传输函数。 当输入声源(11)时,位置信息单元(21)检测具有角度,收听者(30)和多声道扬声器(23)之间的距离的位置信息。 空间信息单元(12)通过使用头部相关传输函数数据库(13)和存储的空间信息来消除位于预设区域内的扬声器(23)的串扰现象。 当通过串扰去除器(14)将声源(11)传送到信号分配器(22)时,信号分配器(22)在位置信息单元(21)获得扬声器信息之后,向扬声器分配信号。
    • 8. 发明公开
    • 복수 채널 스피커 환경에서 가상 스피커 기술을 사용한입체음향 재생 장치
    • 使用虚拟扬声器技术的3D声音再现设备在多声道通道扬声器环境下
    • KR1020080031709A
    • 2008-04-10
    • KR1020080025757
    • 2008-03-20
    • 주식회사 이머시스
    • 김풍민김현석이인호김종우이명철
    • H04S5/00H04S3/00
    • H04S5/005H04S3/008H04S2400/01H04S2400/03
    • A stereophonic sound reproduction apparatus using a virtual speaker technique under plural channel speaker environments is provided to obtain a sufficient reverberation effect by reinforcing only a stereo sound image without deterioration of sound transmission. A multi-channel sound image reinforcing device(27) reinforces the stereo sound image by using a left front channel, a right front channel, a left surround channel, a right surround channel, a front center channel, and a low frequency effect channel. A stereo channel virtual speaker processing device performs diffusion processes of a low-pitched domain and a high-pitched domain for each of the left and right channels of the stereo sound source signal and performs a sound image diffusion process and a front sound image maintaining process by using the high-pitched domain diffusion processed signal to output sums of left signal components and right signal components of the processes respectively. A multi-channel virtual speaker processing device performs diffusion processes of a low-pitched domain and a high-pitched domain for each of the channels of the multi-channel sound source signal, performs a sound image diffusion process by using the high-pitched domain diffusion processed signal, and performs a front sound image maintaining process by using the front center channel and the low frequency effect channel to output sums of left signal components and right signal components of the processes through gain adjustment respectively. An output device outputs the signal outputted from the stereo channel virtual speaker processing device or the multi-channel virtual speaker processing device to a multi-channel speaker.
    • 提供了一种在多声道扬声器环境下使用虚拟扬声器技术的立体声再现装置,通过仅增强立体声图像而不损害声音传播来获得足够的混响效果。 多通道声像增强装置(27)通过使用左前通道,右前通道,左环绕通道,右环绕通道,前中心通道和低频效果通道来加强立体声图像。 立体声通道虚拟扬声器处理装置对立体声源信号的左右声道的每一个进行低音域和高音域的扩散处理,并执行声像扩散处理和前声像保持处理 通过使用高空间域扩散处理的信号分别输出该过程的左信号分量和右信号分量的和。 多声道虚拟扬声器处理装置对多声道声源信号的每个声道进行低音域和高音域的扩散处理,通过使用高音域进行声像扩散处理 扩散处理信号,并且通过使用前中心通道和低频效果通道分别执行通过增益调整输出处理的左信号分量和右信号分量的和来执行前声像保持处理。 输出装置将从立体声信道虚拟扬声器处理装置或多声道虚拟扬声器处理装置输出的信号输出到多声道扬声器。
    • 9. 发明公开
    • 스테레오 스피커 환경에서 가상 스피커 기술을 사용한입체음향 재생 장치 및 방법
    • 使用立体声扬声器环境下的虚拟扬声器技术的3D声音再现设备和方法
    • KR1020070108341A
    • 2007-11-09
    • KR1020070106118
    • 2007-10-22
    • 주식회사 이머시스
    • 김풍민김현석이인호김종우이명철
    • H04S5/00H04S5/02H04S1/00
    • H04S5/005H04S1/002H04S2400/01H04S2420/11
    • A stereophonic sound reproduction device and a method using virtual speaker technique under the stereo speaker environment are provided to obtain a sound effect like a multi-channel output system by applying a virtual surround-sound effect in outputting an audio signal input through a multi-channel, by a two-channel output system. In a stereophonic sound providing device in a stereo speaker, a stereo channel virtual speaker processor(1) diffuses low and high-pitched sound ranges for each left and right channels(L,R) of an input stereo sound signal, diffuses a sound image and maintains a front sound image by using the signal diffused into a high-pitched sound range, and outputs the combination of the left and right processed sound. A multi-channel virtual speaker processor(2) diffuses low and high-pitched sound ranges for left and right front channels and left and right surround channels of an input multi-channel sound signal, diffuses a sound image by using the signal diffused into a high-pitched sound range, maintains the front sound image by using a front center channel and a low frequency effect channel, and outputs the combination of the left and right processed sound by controlling gains. An output device(3) outputs a signal from the stereo channel virtual speaker processor or the multi-channel virtual speaker processor to the stereo speaker.
    • 提供立体声声音再现装置和在立体声扬声器环境下使用虚拟扬声器技术的方法,以通过在虚拟环绕声效果中输出通过多声道输入的音频信号来获得像多声道输出系统的声音效果 ,由双通道输出系统。 在立体声扬声器中的立体声提供装置中,立体声声道虚拟扬声器处理器(1)扩散输入立体声信号的左,右声道(L,R)的低音和高音范围,扩散声像 并通过使用扩散到高音区域的信号来保持前方声像,并输出左右处理声音的组合。 多声道虚拟扬声器处理器(2)扩散输入多声道声音信号的左右前声道和左右环绕声道的低音高声部,通过使用扩散到 高声音范围,通过使用前中心声道和低频效果声道保持前声像,并通过控制增益输出左右处理声音的组合。 输出装置(3)将来自立体声道虚拟扬声器处理器或多声道虚拟扬声器处理器的信号输出到立体声扬声器。
    • 10. 发明公开
    • 입체 음향을 생성하는 장치 및 방법
    • 用于创建3D声音的装置和方法
    • KR1020060004529A
    • 2006-01-12
    • KR1020040053674
    • 2004-07-09
    • 주식회사 이머시스
    • 김풍민김현석김진욱이동우이인호최용석구정모이명철신동선김종우
    • H04S1/00
    • H04S1/005H04R5/04H04S7/30H04S2420/13
    • 본 발명은 음원파일을 재생시에 입체음향 효과를 나타내게 하는 처리방법 및 장치에 관한 것이다.
      본 발명은 음원파일을 입력 받아 음원이 모노인지 스테레오인지를 판별하는 판별장치(1); 상기 판별장치(1)에서 모노로 판별되면 음원을 의사 스테레오로 변환하고 음상확산을 하는 모노 음상 확산 장치(2); 상기 판별장치(1)에서 스테레오로 판별되면 음원을 음상확산하는 스테레오 음상 확산 장치(3); 상기 모노 음상 확산 장치(2) 또는 스테레오 음상 확산 장치(2)의 출력을 수신하여, 스피커 재생인지 또는 헤드폰 재생인지의 선택결과에 따라, 헤드폰 재생이면 상기 출력을 헤드폰(8)으로 전달하는 선택장치(6); 상기 선택장치(6)에서 선택 결과가 스피커 재생이면, 상기 출력을 스피커로 재생할 때에 발생하는 크로스토크를 제거하여 스피커(9)로 출력하는 입체음향 가속기(7)를 포함한다.
      이상과 같은 본 발명의 방법을 이용하면, 헤드폰 재생뿐만 아니라 스피커 재생시에도 실시간으로 입체음향의 재생이 가능하고, 모노입력과 스테레오 입력 모두에 대하여 음상확산이 가능하게 된다.
      입체음향, 휴대용 단말기, 음상확산