公开(公告)号：US20160293171A1

公开(公告)日：2016-10-06

申请号：US15051232

申请日：2016-02-23

Applicant: Electronics and Telecommunications Research Institute

Inventor： Seung Kwon BAECK ,  Tae Jin PARK ,  Jong Mo SUNG ,  Yong Ju LEE ,  Tae Jin LEE ,  Jin Soo CHOI

IPC: G10L19/018 ,  G10L21/0232 ,  G10L19/06

CPC classification number: G10L19/018

Abstract: Methods and apparatuses for hiding and extracting data based on a pilot code sequence are provided. A data hiding method may include converting an input audio signal to a frequency domain, distorting phase information of the audio signal converted to the frequency domain based on a pilot code sequence representing data to be hidden, and converting the audio signal with the distorted phase information to a time domain and transmitting the audio signal converted to the time domain. The pilot code sequence may be a set of phase values corresponding to a bit value “0” or “1” of data.

Abstract translation: 提供了基于导频代码序列隐藏和提取数据的方法和装置。 数据隐藏方法可以包括：将输入音频信号转换为频域，根据表示要隐藏的数据的导频代码序列，将转换到频域的音频信号的相位信息失真，以及用失真相位信息转换音频信号 发送到时域，并发送转换为时域的音频信号。 导频代码序列可以是对应于数据的位值“0”或“1”的一组相位值。