SOUND RECORDING AND REPRODUCING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a sound recording and reproducing device which records a reception voice and a transmission voice with the data volume compressed and simultaneously reproduces these reception voice and transmission voice by one decoder in a mobile radio terminal. SOLUTION: One frame portion of data of a reception voice signal of a decoded PCM signal is stored in a first buffer 34. One frame portion of data of a transmission voice signal of the decoded PCM signal is stored in a second buffer 35. Output signals of the first buffer 34 and the second buffer 35 are added by an adder 36.