SYSTOLIC MULTIPLE CHANNEL BAND-PARTITIONED NOISE CANCELLER
Assignee
DEPARTMENT OF THE NAVY
Filed
Jun 21, 1991
Granted
Oct 1, 1996
Location
DUNKIRK MD US
Abstract
A novel band partitioned noise cancellation method and device is disclosed. In the invention, in which main and auxiliary channel data is transformed to the frequency domain by FFT's and then associated by frequency subbands. The noise is then cancelled using a sequence of operations including a commutating Gram-Schmidt canceller, an equivalent linear weight calculator, formation of a weight matrix, conversion of the weights to time domain by an inverse FFT and rotation of the weights. The weights are then combined with the main and auxiliary channel data in a transversal filter network to produce a noise-cancellation residue.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Jul 27, 1992
Rescinded
May 9, 1995
Duration
2 years, 9 months
Inventor
- 1KARL R. GERLACH
Record Details
- Patent number
- US 5561667
- Application
- 00771921
- Aerospace match
- No
- Dataset source
- 35 USC §181 SO records