| 1. |
|
|
| 2. |
|
|
| 3. |
|
|
| 4. |
|
|
| 5. |
- Nordebo, Sven, et al.
(författare)
-
A Minimax Near Field Design of Broadband Beamformers
- 1994
-
Konferensbidrag (refereegranskat)abstract
- A method to solve a general broadband beamformer design problem is formulated as a quadratic program. As a special case, the minimax near field design problem of a broadband beamformer is solved as a quadratic programming formulation of the weighted Chebyshev approximation problem. An example is given that demonstrate the minimax near field behaviour of the beamformer designed.
|
|
| 6. |
- Nordebo, Sven, et al.
(författare)
-
Adaptive Beamforming : Spatial Filter Designed Blocking Matrix
- 1994
-
Ingår i: IEEE journal of oceanic engineering : a journal devoted to the application of electrical and electronics engineering to the oceanic environment. - New York : Institute of Electrical and Electronics Engineers, Council on Oceanic Engineering. - 0364-9059. ; 19:14, s. 583-590
-
Tidskriftsartikel (refereegranskat)abstract
- Controlling the resolution in adaptive beamformers is often crucial. A simple method that works for both narrowband and broad-band arrays is presented. This method is based on the normalized leaky LMS algorithm in conjunction with a generalized sidelobe canceller (GSC) structure, where the GSC is designed using a spatial filtering approach. In essence, the suppression of the spatial filters and the implicit noise of the leaky LMS algorithm together determine the adaptive beamformer. Analytical expressions are given for the Wiener filters and the output spectrum versus frequency and point source location. These expressions are employed in the design specification of the spatial filters and to obtain conditions for a controlled quiescent beamformer response. Simulation results are presented to illustrate the behavior of the array.
|
|
| 7. |
- Nordebo, Sven, et al.
(författare)
-
An Adaptive Microphone Array Employing Calibration Signals Recorded On-Site
- 1994
-
Konferensbidrag (refereegranskat)abstract
- This paper presents an adaptive microphone array, which facilitates a simple built-in calibration to the environment and the electronic equipment used. The method is well-suited for speech enhancement in handsfree mobile telephones as well as for speech enhancement in speech recognition devices.
|
|
| 8. |
|
|
| 9. |
|
|
| 10. |
|
|
