DEVICE AND SYSTEM FOR CODE CONVERSION

摘要

PURPOSE: To provide the code conversion system which allows a telephone conversation without reconverting a speech into a reproduced speech temporarily as to a telephone conversation between speech encoding systems that are different in quantized value or quantizing method. CONSTITUTION: When there are a 1st speech encoding method and a 2nd speech encoding method which perform encoding processes differing in quantized value or quantizing method as code excitation linear predictive encoding methods, the code converting device converts multiplexed codes of the 1st speech encoding method into multiplexed codes of the 2nd speech encoding method. A code separation part 510 inputs the multiplexed codes encoded by the 1st speech encoding method and separates them into individual codes, and a conversion part 500 converts the individual separated codes into respective codes of the 2nd speech encoding method according to the correspondence relation between the codes of the 1st speech encoding method and the codes of the 2nd speech encoding method. A multiplexing part 570 multiplexes the respective codes of the 2nd speech encoding method which are converted by the conversion part 500.