Audio distributing system

Details Audio distributing system Audio distributing system

1981-12-24

1984-01-31

Schreyer, Stafford D.

Electrical audio signal processing systems and devices

Hearing aids, electrical

Specified casing or housing

179 99H, 381 80, 381 93, H04M 121, H04M 120

Patent

active

044291876

ABSTRACT:
A system for distributing signals from an audio source to key telephone station instruments is disclosed. By controlling the impedance relationship between the station instruments, lines and amplifier output, cross-feeding of signals from one station instrument to another or back-feeding of signals to the audio source is prevented.

REFERENCES:
patent: 4149042 (1979-04-01), Balzer et al.

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