Electrical audio signal processing systems and devices – Including amplitude or volume control – Automatic
Reexamination Certificate
2007-07-31
2007-07-31
Chin, Vivian (Department: 2615)
Electrical audio signal processing systems and devices
Including amplitude or volume control
Automatic
C381S104000, C381S019000, C381S027000, C381S022000
Reexamination Certificate
active
10423829
ABSTRACT:
A motion picture soundtrack reproduction system has a center front soundtrack channel and a plurality of other soundtrack channels. A volume control adjusts the gain of all the channels. The volume control has a range of settings from a minimum to a maximum, the gain of the center front channel having substantially a first relationship to the volume control settings and the gain of the other channels having substantially a second relationship to the volume control settings, the relationships being such that for a range of volume control settings less than a first setting the gain of the center front channel remains substantially constant while the gain of the other channels decreases as the setting decreases or decreases more gradually than the gain of the other channels as the setting decreases.
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Applicant's admitted prior art, p. 1, line 12-p. 4, line 11.
Applicant's admitted prior art, p. 1, line 12-p. 4, line 11, Figure 1.
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Dolby Laboratories Licensing Corporation
Faulk Devona E.
Gallagher Thomas A.
Gallagher & Lathrop
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