Circuit for compression or expansion of an electrical signal

Details Circuit for compression or expansion of an electrical signal Circuit for compression or expansion of an electrical signal

1980-05-12

1982-10-05

Mullins, James B.

Amplifiers

With plural amplifier channels

Amplifying different frequencies in different channels

330 86, 330284, 333 14, 455 72, H03F 368, H04B 164

Patent

active

043530354

ABSTRACT:
In a two-band compander pre-emphasis is carried out during compression and de-emphasis during expansion in the lower frequency range. Noise suppression is improved by this measure.

REFERENCES:
patent: 2287077 (1942-06-01), Abraham
patent: 4114115 (1978-09-01), Minnis
patent: 4218662 (1980-08-01), Schroder

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