Electrical audio signal processing systems and devices – Noise or distortion suppression – Feedforward circuitry for transducer compensation
Reexamination Certificate
2005-12-01
2011-11-15
Chin, Vivian (Department: 2614)
Electrical audio signal processing systems and devices
Noise or distortion suppression
Feedforward circuitry for transducer compensation
C381S059000, C381S106000
Reexamination Certificate
active
08059832
ABSTRACT:
When an inputted audio signal is outputted from a speaker device having a predetermined input-output characteristic, the predetermined input-output characteristic being selected such that the linearity of an output level with respect to an input signal is approximately assured at a level equal to a predetermined level or more and the output level with respect to the input signal is lowered at a level equal to the predetermined level or less, a correction process for compensating a lowered output level is carried out with respect to a signal component approximately of a level equal to the predetermined level or less in the inputted audio signal. Owing to the correction process, the reproduction characteristic of a small volume signal from a speaker is improved.
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Japanese Office Action issued on Apr. 1, 2008 in corresponding Japanese Application No. JP 2004-349053 (2 pages).
Japanese Office Action issued on Apr. 1, 2008 in connection with corresponding Japanese Application No. JP 2004-363570 (2 pages).
Chin Vivian
Lerner David Littenberg Krumholz & Mentlik LLP
Sony Corporation
Suthers Douglas
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