CDB6422 ic equivalent, enhanced full-duplex speakerphone ic.
l Single-chip,
General Description
Most modern speakerphones use half-duplex operation, which alternates transmission between the far-end talker and the speakerphone use.
Most modern speakerphones use half-duplex operation, which alternates transmission between the far-end talker and the speakerphone user. This is done to ensure stability because the acoustic coupling between the speaker and microphone is much higher .
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