NOISE-SHAPERS AND FILTERS WITH NOISE SHAPING QUANTIZERS AND SYSTEMS AND METHODS USING THE SAME

Title:

NOISE-SHAPERS AND FILTERS WITH NOISE SHAPING QUANTIZERS AND SYSTEMS AND METHODS USING THE SAME

Document Type and Number:

WIPO Patent Application WO2004094965

Kind Code:

A3

Abstract:

A noise shaping system including an inner loop and outer noise shaping loops. The inner noise shaping loop includes an inner loop filter and a quantizer for quantizing an output of the inner loop filter. The outer noise shaping loop includes an outer loop filter having an input receiving feedback from the quantizer of the inner noise shaping loop and an output driving an input of the inner loop filter of the inner noise shaping loop.

Inventors:

MELANSON JOHN LAURENCE (US)

Application Number:

PCT/US2004/005733

Publication Date:

May 26, 2005

Filing Date:

February 26, 2004

Export Citation:

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Assignee:

CIRRUS LOGIC INC (US)
MELANSON JOHN LAURENCE (US)

International Classes:

G10L19/00; H03B29/00; H03H17/04; H03M3/02; H03M7/36; (IPC1-7): A61F11/06; H04B15/00; H03B29/00

Foreign References:

US5598158A	1997-01-28
US5757299A	1998-05-26
US20030201922A1	2003-10-30
US5821889A	1998-10-13

Other References: