·詳細說明： GSM AMR-NB speech codec R98 Version 7.6.0 December 12, 2001 R99 Version 3.3.0 REL-4 Version 4.1.0 REL-5 version 5.3.0 REL-6 version 6.0.0 - GSM AMR-NB speech codec R98 Version 7.6.0 December 12,
A document about audio,include Mp3 , Mp3Pro, AAC , AAC+ , EAAC+ , AMR , AMR-WB ,AMR-WB+ .It list detail information about this audio type.It is a guide to study these audio in advance
