发明名称 |
CCD speech processor |
摘要 |
Homomorphic speech processing apparatus utilizing CCD implementation of the CZT algorithm for performing DFT and IDFT operations in extracting representations of formants and/or pitch data from sampled speech inputs. Embodiments also are described for performing the DFT and IDFT operations (a) by generating n-transforms and averaging the result and (b) for performing a sliding CZT transform. In a further embodiment, a smoothed spectrum of vocal tract data is obtained using a CCD filter with a low pass response. The CCD implementation includes transversal filters employing split-electrode signal amplitude weighting. |
申请公布号 |
US4076960(A) |
申请公布日期 |
1978.02.28 |
申请号 |
US19760735916 |
申请日期 |
1976.10.27 |
申请人 |
TEXAS INSTRUMENTS INCORPORATED |
发明人 |
BUSS, DENNIS D.;HEWES, CHARLES ROBERT |
分类号 |
G10L11/00;(IPC1-7):G10L1/00 |
主分类号 |
G10L11/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|