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 Title: |
US6314394:
Adaptive signal separation system and method
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Finn, Alan M.; Hebron, CT
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| Assignee: |
Lear Corporation, Southfield, MI
other patents from LEAR CORPORATION (722052) (approx. 445)
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| Published / Filed: |
2001-11-06
/ 1999-05-27
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| Application Number: |
US1999000321237
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| IPC Code: |
Advanced:
G10L 21/02;
Core:
G10L 21/00;
IPC-7:
G10L 21/02;
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| ECLA Code: |
G10L21/02A1;
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| U.S. Class: |
Current:
704/226;
381/094.2;
704/215;
704/E21.004;
Original:
704/226;
381/094.2;
704/215;
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| Field of Search: |
704/219,220,226,227,228,210,215
381/94.1,94.2,94.3,94.7,94.8
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| Priority Number: |
| 1999-05-27 |
US1999000321237 |
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| Abstract: |
A method of reducing undesired components from a signal that includes a desired component and undesirable components utilizes an autoregressive model technique. An autoregressive module determines a power spectral density approximation of the signal. An error component of the power spectral density approximation includes the desired component. Portions of the error component having frequencies outside of the expected range of the desired component preferably are filtered so that the result is the desired component with the undesired component removed. The invention is useful, for example, for reducing undesirable noise components from sound signals.
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| Attorney, Agent or Firm: |
Brooks & Kushman P.C. ;
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| Primary / Asst. Examiners: |
Korzuch, William; Lerner, Martin
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| INPADOC Legal Status: |
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| Family: |
Show 2 known family members
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First Claim:
Show all 14 claims |
What is claimed is:
1. A method of removing an undesirable component from a signal also containing a desired component, comprising the steps of:
- (a) capturing a signal having a desired component and an undesirable component;
- (b) determining a power spectral density approximation of the captured signal;
- (c) separating an error component out from the power spectral density approximation of step (b); and
- (d) determining the desired component from the error component of step (c), wherein step (d) includes filtering the error component of step (c) to remove undesirable components having a frequency that exceeds a preselected maximum from the error component.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 3 U.S. patent(s) that reference this one
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| Foreign References: |
None
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| Other Abstract Info: |
DERABS G2001-203539
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| Other References: |
M. J. Sousa, "Performance analysis for innovations-based detection," 1992 IEEE International Conference on Acoustics, Speech, and Signal Processing, vol. 5, Mar. 1992, pp. 361 to 364.*
Kay et al., "Extraction of periodic signals in colored noise," 1992 IEEE International Conference on Acoustics, Speech, and Signal Processing, vol. 5, Mar. 1992, pp. 281 to 284.*
S. L. Marple, Jr., "A tutorial overview of modern spectral estimation," 1989 International Conference on Acoustics, Speech, and Signal Processing, vol. 4, May 1989, pp. 2152-2157.
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