发明名称 |
Method and device for extending bandwidth of speech signal |
摘要 |
A method for extending a bandwidth of a speech signal received, according to an embodiment of the present invention, includes: transforming the received speech signal into a frequency domain by decoding the received speech signal; normalizing the transformed speech signal; differentiating a voiced sound period or unvoiced sound period from the received speech signal; extracting, from the normalized speech signal, a first period including a harmonic component of the voiced sound period on the basis of the voiced sound period; extracting, from the normalized speech signal, a second period on the basis of correlation between the unvoiced sound period and the normalized speech signal; generating a high-band speech signal on the basis of the first period and the second period; and synthesizing the generated high-band speech signal and the transformed speech signal to output a wideband speech signal. |
申请公布号 |
US8909539(B2) |
申请公布日期 |
2014.12.09 |
申请号 |
US201213708346 |
申请日期 |
2012.12.07 |
申请人 |
Gwangju Institute of Science and Technology |
发明人 |
Kim Hong Kook;Park Nam In |
分类号 |
G10L21/00 |
主分类号 |
G10L21/00 |
代理机构 |
Nath, Goldberg & Meyer |
代理人 |
Nath, Goldberg & Meyer ;Goldberg Joshua B. |
主权项 |
1. A method for extending a bandwidth of a speech signal received, the method comprising:
transforming the received speech signal into a frequency domain by decoding the received speech signal; normalizing the transformed speech signal; differentiating a voiced sound period or unvoiced sound period from the received speech signal; extracting, from the normalized speech signal, a first period including a harmonic component of the voiced sound period on the basis of the voiced sound period; extracting, from the normalized speech signal, a second period on the basis of correlation between the unvoiced sound period and the normalized speech signal; generating a high-band speech signal on the basis of the first period and the second period; and synthesizing the generated high-band speech signal and the transformed speech signal to output a wideband speech signal. |
地址 |
Gwangju KR |