Electrical audio signal processing systems and devices – Binaural and stereophonic – Broadcast or multiplex stereo
Reexamination Certificate
2007-12-25
2007-12-25
Woo, Stella (Department: 2614)
Electrical audio signal processing systems and devices
Binaural and stereophonic
Broadcast or multiplex stereo
C381S011000
Reexamination Certificate
active
10224931
ABSTRACT:
A FM broadcast compander system is combined with a conventional denoising system suited for FM receiver, wherein a noise indicator is determined by a subtraction of the conventionally transmitted difference signal Ud(z) from the additionally transmitted difference signal (Uc(z)) which is additionally transmitted according to the companding system. This system gives a noise reduction of 20 dB in a stereo FM broadcast receiver.
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Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Sony Deutschland GmbH
Woo Stella
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