Wave transmission lines and networks – Amplitude compression and expansion systems
Patent
1985-05-02
1987-07-28
LaRoche, Eugene R.
Wave transmission lines and networks
Amplitude compression and expansion systems
381106, 330 85, 330279, 330144, H04B 164, H03G 700
Patent
active
046834494
ABSTRACT:
A noise reduction system which is unaffected by bandwidth limitations of the transmission system with which the noise reduction system is employed. The noise reduction system is of a type including a compressor, the transmission system, which receives a compressed signal from the compressor, and an expander for expanding a signal outputted by the transmission system. In accordance with the invention, a low-pass filter having a pass band corresponding to the transmission band of the transmission system is provided in the stage prior to the compressor. In another embodiment, a low-pass filter is provided in a stage prior to a level detector within the compressor.
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LaRoche Eugene R.
Lee Benny T.
Pioneer Electronic Corporation
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