Electrical audio signal processing systems and devices – Including amplitude or volume control – Automatic
Patent
1993-12-02
1995-03-21
Isen, Forester W.
Electrical audio signal processing systems and devices
Including amplitude or volume control
Automatic
381 28, H03G 300
Patent
active
054004101
ABSTRACT:
In an apparatus for reproducing media having a channel 1 including only accompanied signals and a channel 2 including accompanied signals and song signals, a song signal separator which includes a gain adjusting means for inputting signals of a channel 1, a subtracting means for subtracting the output signals of the gain adjusting means from the signals of a channel 2, and a control means for inputting control starting signals, signals of the channel 2 and the outputs of the subtracting means so as to control the gains of the gain adjusting means. A song signal separator which is capable of drawing out songs only even when the recording level of the accompaniments of the channel 1 is different from the recording level of the accompaniments of the channel 2.
REFERENCES:
patent: 5287789 (1994-02-01), Zimmerman
Muraki Kenji
Numoto Tatsuhiko
Ogawa Nobuyuki
Watanabe Kouji
Isen Forester W.
Matsushita Electric - Industrial Co., Ltd.
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