GSM 06.10

• FOURCCs: agsm
• Website: http://kbs.cs.tu-berlin.de/~jutta/toast.html
• Specification: http://www.3gpp.org/ftp/Specs/2010-06/R1999/06_series/0610-820.zip

GSM 06.10 is a GSM vocoder standard that also occurs in some multimedia files. Also see Microsoft GSM.

Format: Each frame consists of 33 bytes, in a little-endian bitstream.

Bitstream layout:

4 bits: magic 0xd, 2 x 6 bits, 2 x 5 bits, 2 x 4 bits, 2 x 3 bits

4 x coefficients ( 7 bits, 2 bits, 2 bits, 6 bits, 13 x 3 bits )