Audio hybrid

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Categories: Audio, Broadcasting

Sometimes simply called a hybrid, this is a device or component that can convert between 2-wire and 4-wire audio interconnections. The device has three ports one for the 2 wire bidirectional audio pair, another for audio out and the third for audio in.
Land-line telephones contain a hybrid, to feed the microphone and the speaker in their handset separately. A audio hybrid can be built just from copper wire wound on a metal core, effectively a special sort of transformer but most modern systems use electronic hybrids, built from op-amps and other active components. Some talkback/ intercom systems include electronic hybrids which can be configured and used on some analogue outputs via software driven switches or hardware links on interface PCB’s