Apparatus and method of code conversion and recording medium that records program for computer to execute the method

Code conversion apparatus for converting a first code sequence conforming to a first speech coding scheme into a second code sequence conforming to a second speech coding scheme, said apparatus comprising:

• a discrimination unit that discriminates whether said first code sequence corresponds to a speech part or to a non-speech part and generates a value that indicates the discrimination result as a control flag;
• a speech part conversion unit that converts said first code sequence into said second code sequence and outputs this code sequence, when the value of said control flag corresponds to the speech part;
• and
• a non-speech part generating unit that outputs the second code sequence that corresponds to the value of said control flag, when the value of the control flag corresponds to the non-speech part.

A recording medium that records a program for a computer to execute a code conversion method for converting a first code sequence conforming to a first speech coding scheme into a second code sequence conforming to a second speech coding scheme, said program comprising the steps of:

• (A) discriminating whether said first code sequence corresponds to a speech part or to a non-speech part and generating a value that indicates the discrimination result as a control flag;
• (B) converting said first code sequence into said second code sequence and outputting this code sequence, when the value of said control flag corresponds to the speech part;
• and
• (C) outputting the second code sequence that corresponds to the value of said control flag, when the value of the control flag corresponds to the non-speech part.