Voice-switched Speakerphone Circuit with built in loudspeaker amplifier
Description
January 1998
PBL 388 13 Voice-switched Speakerphone Circuit with built in loudspeaker amplifier
Description.
The PBL 388 13 contains all the necessary circuitry, amplifiers, detectors, comparator and control functions to implement a high performance, voice-switched, loudspeaking, ”hands-free ” telephone. The gain dynamics (attenuation between channels) is s...
