公开(公告)号：US20140324417A1

公开(公告)日：2014-10-30

申请号：US14325475

申请日：2014-07-08

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Mi-Suk LEE ,  Heesik YANG ,  Hyun-Woo KIM ,  Jongmo SUNG ,  Hyun-Joo BAE ,  Byung-Sun LEE

IPC: G10L19/02

CPC classification number: G10L19/02 ,  G10L19/0212 ,  G10L19/24

Abstract: Provided are a method and an apparatus for encoding and decoding an audio signal. A method for encoding an audio signal includes receiving a transformed audio signal, dividing the transformed audio signal into a plurality of subbands, performing a first sinusoidal pulse coding operation on the subbands, determining a performance region of a second sinusoidal pulse coding operation among the subbands on the basis of coding information of the first sinusoidal pulse coding operation, and performing the second sinusoidal pulse coding operation on the determined performance region, wherein the first sinusoidal pulse coding operation is performed variably according to the coding information. Accordingly, it is possible to further improve the quality of a synthesized signal by considering the sinusoidal pulse coding of a lower layer when encoding or decoding an audio signal in an upper layer by a layered sinusoidal pulse coding scheme.

Abstract translation: 提供了一种用于对音频信号进行编码和解码的方法和装置。 一种对音频信号进行编码的方法包括接收经变换的音频信号，将变换的音频信号分成多个子带，对子带执行第一正弦脉冲编码操作，确定子带中的第二正弦脉冲编码操作的性能区域 基于第一正弦脉冲编码操作的编码信息，并对所确定的执行区域执行第二正弦脉冲编码操作，其中根据编码信息可变地执行第一正弦脉冲编码操作。 因此，通过考虑在通过分层正弦脉冲编码方案对上层中的音频信号进行编码或解码时下层的正弦脉冲编码，可以进一步提高合成信号的质量。

公开(公告)号：US20130104006A1

公开(公告)日：2013-04-25

申请号：US13653879

申请日：2012-10-17

Applicant: Electronics and Telecommunications Research Institute

Inventor： Seung-Han CHOI ,  Do-Young KIM ,  Byung-Sun LEE

IPC: H03M13/05

CPC classification number: H03M13/05 ,  H03M13/353 ,  H03M13/6312 ,  H03M13/6547

Abstract: Disclosed are an apparatus and a method for transmitting data so as to maximally recover lost data packets by a forward error correction (FEC) scheme in a wireless communication based internet protocol (IP) network. The apparatus for transmitting data confirms a state of data samples according to data patterns of data patterns to be transmitted through a wireless channel, calculates state probabilities of the data samples according to the state of the data samples, determines the generation of redundant data packets of the data packets based on the state probabilities of the data samples, generates the redundant data packets using the data packets according to the determination of the generation of the redundant data packets, and transmits the data packets and the redundant data packets through the wireless channel.

Abstract translation: 公开了一种用于发送数据的装置和方法，以便在基于无线通信的互联网协议（IP）网络中通过前向纠错（FEC）方案最大限度地恢复丢失的数据分组。 用于发送数据的装置根据要通过无线信道发送的数据模式的数据模式确认数据样本的状态，根据数据样本的状态计算数据样本的状态概率，确定数据样本的生成 基于数据样本的状态概率的数据分组根据生成冗余数据分组的确定，使用数据分组生成冗余数据分组，并通过无线信道发送数据分组和冗余数据分组。