APPARATUS AND METHOD FOR FRAME FORMAT CONVERSION

摘要

PROBLEM TO BE SOLVED: To provide a frame format converting apparatus and a frame converting method which convert a frame including a sound encoding bit encoded by a voice encoding system, such as AMR (Adaptive Multi-Rate) for switching an encoded bit rate per frame into another frame of the voice encoding system. SOLUTION: This frame format converting apparatus 100 is provided with: a frame extracter 102 for extracting continuously inputted frames per frame; an FT detecting/storing section 103 for detecting a frame type bit from among the extracted frames; an unnecessary bit deleting section 104 for deleting the frame type bit and an additional information bit from among the extracted frames; a bit shift 105 and a bit reverting section 106 for changing the voice encoded bit into the predetermined position of the extracted frame; and an FT positioning section 107 for positioning the frame type bit to the predetermined position of the extracted frame. COPYRIGHT: (C)2005,JPO&NCIPI