Method and apparatus for multichannel signal limiting

Details Method and apparatus for multichannel signal limiting Method and apparatus for multichannel signal limiting

2005-03-03

2010-06-01

Tran, Pablo N (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

C455S177100, C455S200100, C455S232100

Reexamination Certificate

active

07729673

ABSTRACT:
A method and apparatus provide multichannel signal limiting to prevent any channel signal within a multichannel signal from exceeding defined limits, while still preserving the gain and/or amplitude relationships among the individual channel signals. A limiter is configured to calculate a limiting factor as the value needed to prevent a limit violation on the worst-case one of the channel signals, and then commonly apply that limiting factor to the gain control of all channel signals. Thus, the limiter may generate an actual gain value for each channel signal as the product of that channel signal's desired gain value and the current value of the limiting factor. Notably, in multichannel audio signal applications, coordinating gain control across the individual audio channels by use of the commonly applied limiting factor prevents undesirable spatial shifting of the soundstage, e.g., shifting of the stereo image.

REFERENCES:
patent: 5212733 (1993-05-01), Devitt et al.
patent: 6332026 (2001-12-01), Kuusama et al.
patent: 6535846 (2003-03-01), Shashoua
patent: 6760452 (2004-07-01), Lau et al.
patent: 6839441 (2005-01-01), Powers et al.
patent: 7177432 (2007-02-01), Eid et al.
patent: 7206413 (2007-04-01), Eid et al.
patent: 2003/0055635 (2003-03-01), Bizjak
patent: 2003/0055636 (2003-03-01), Katuo et al.
patent: 2004/0037440 (2004-02-01), Croft, III
patent: 2004/0081324 (2004-04-01), Lau et al.
patent: 2004/0207466 (2004-10-01), Anderson et al.
patent: 2004/0213420 (2004-10-01), Gundry et al.
patent: 2005/0160126 (2005-07-01), Bruhn et al.
patent: 2005/0281418 (2005-12-01), Shashoua
patent: 2006/0018486 (2006-01-01), Neoran et al.
patent: 2007/0005160 (2007-01-01), Zaucha et al.
patent: 2007/0211908 (2007-09-01), Van Reck
patent: 2008/0025530 (2008-01-01), Romesburg
PCT International Search Report, International Application No. PCT/US2005/030210, Jan. 30, 2006.

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