Apparatus for reproducing PCM magnetic recording tape

Apparatus for reproducing voice signals from a PCM magnetic recording tape in which a coded voice signal is recorded further including a discontinue waveform calibrator which comprises:

• a control signal generator for detecting an edited part from PCM signal rows reproduced from the magnetic tape and for transmitting a control signal;
• a first memorizing means for memorizing at least one word part of the PCM signal rows which are inputted sequentially;
• a second memorizing means for memorizing specific words of the PCM signal rows overflowed from the first memorizing means;
• a third memorizing means for memorizing at least one word part of the PCM signal rows overflowed from the memorizing means;
• a first weighing means for multiplying a gradually increasing weight from X0 to X1 to the memorized data of the first memorizing means upon receiving said control signal to output it;
• a second weighing means for multiplying a gradually decreasing weight from X1 to X0 to the memorized data of the third memorizing means upon receiving said control signal;
• an adder for summing gradually the output signals of the first and second weighing means;
• and a switch for switching to receive as an input the PCM signal overflowed from the third memorizing means in the normal state and switching the PCM signal output from the adder into a decoder upon receiving said control signal.

Apparatus for reproducing voice signals from a PCM magnetic recording tape in which a coded voice signal is recorded further including a discontinue waveform calibrator which comprises:

• a control signal generator for detecting an edited part from PCM signal rows reproduced from the magnetic tape and for transmitting a control signal;
• a first memorizing means for memorizing at least one word part of the PCM signal rows which are inputted sequentially;
• a second memorizing means for memorizing at least one word part of the PCM signal rows which are inputted sequentially;
• a subtractor for subtracting data of the second memorizing means from the data of the first memorizing means;
• weighing means for multiplying a gradually decreasing weight from X1 to X0 for specific words to the output of the subtractor upon receiving said control signal;
• an adder for summing the output of the weighing means and the output of the first memorizing means;
• and a switch for switching the output of the first memorizing means into the second memorizing means in the normal state, and for switching the output of the adder into the second memorizing means during receipt of said control signal for passing the specific words, whereby the PCM signal rows overflowed from the second memorizing means are decoded.