AUDIBLE SOUND GENERATING CIRCUIT OF DIGITAL TELEPHONE SET

PURPOSE:To simplify a circuit, and to generate effectively many kinds of function sounds by providing a processing part for inputting and processing a control signal, an audible sound generating part for generating a prescribed audible sound based on its output, and the first and the second synthesizing parts for synthesizing this generated signal and a voice signal. CONSTITUTION:A processing part 8 decodes an incoming signal, generates a ringing tone code and sends it out to an audible sound generating circuit 9. An audible sound generating circuit 10 generates an audible sound signal based on this parallel data. By a switching signal C from the processing part 8, a path is switched to the first synthesizing part 20 side, the audible sound signal is amplified by a loudspeaker amplifier 16, and thereafter, an audible sound is generated as a line wire call from a loudspeaker 12. An incoming in the course of a call generates an audible sound data code of a catch-phone sound by the processing part 8, and it is sent out to the audible sound generating part 9. In the audible sound generating part 10, a catch-phone sound signal is generated, the switching signal C is inputted to an audible sound switching part 15, the catch-phone sound signal is inputted to the second synthesizing part 21, and a receiving sound signal and the catch-phone sound signal is synthesized.