发明名称 |
Advanced periodic signal enhancement |
摘要 |
An enhancement system improves the perceptual quality of a processed speech. The system includes a delay unit that delays a signal received through a discrete input. A spectral modifier linked to the delay unit is programmed to substantially flatten the spectral character of a background noise. An adaptive filter linked to the spectral modifier adapts filter characteristics to match a response of a non-delayed signal. A programmable filter is linked to the delay unit. The programmable filter has a transfer function functionally related to a transfer function of the adaptive filter.
|
申请公布号 |
US7716046(B2) |
申请公布日期 |
2010.05.11 |
申请号 |
US20050317762 |
申请日期 |
2005.12.23 |
申请人 |
QNX SOFTWARE SYSTEMS (WAVEMAKERS), INC. |
发明人 |
NONGPIUR RAJEEV;HETERINGTON PHILLIP A. |
分类号 |
G10L21/02;H04B15/00 |
主分类号 |
G10L21/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|