Electrical audio signal processing systems and devices – Monitoring of sound – Amplification control responsive to ambient sound
Reexamination Certificate
2003-06-03
2008-03-18
Chin, Vivian (Department: 2615)
Electrical audio signal processing systems and devices
Monitoring of sound
Amplification control responsive to ambient sound
C381S002000, C381S061000, C381S098000, C381S102000, C381S311000, C455S063100, C455S296000, C455S226200, C455S226300, C455S306000
Reexamination Certificate
active
07346173
ABSTRACT:
A method for influencing, e.g., for decreasing, the treble reproduction of an audio signal for reproduction obtained from a received signal, the received field strength and reception quality of the received signal being evaluated and, as a function thereof, the transfer function of at least one filter unit that can be impinged upon by the audio signal being controlled, as well as a circuit assemblage or arrangement for performing such a method for the modification of treble reproduction, so that, among other things, reproduction of the interference may always be reliably concealed and so that no noticeable and/or irritating “flutter” effects may occur. The method may include processing of the output signals of at least two reception interference detectors, and processing of the received field strength may be accomplished respectively in at least one first processing branch operating at a first, e.g. variable, sampling rate and/or in at least one second processing branch operating at a second sampling rate, and the first sampling rate may be set lower than the second sampling rate, so that the treble reproduction can be damped for longer time periods by the first processing branch than the second processing branch.
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Chin Vivian
Faulk Devona E
Kenyon & Kenyon LLP
Robert & Bosch GmbH
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