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Recomendation ITU-T G.722.1

ITU-T Wideband speech codec ITU-T G.722.1 is designed for using in teleconference systems. It has wide work frequency band from 50 Hz - 7 kHz and two rates 24 kbps 32 kbps.

 


Full description you can find at document (or ITU web site):

  • ITU-T Recommendation G.722.1, Coding at 24 kbit/s and 32 kbit/s for hands-free operation in systems with low frame loss.

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DSP implementation for family TMS320C54x

Algorithm is implemented for TI's DSP from family TMS320C54x .

Implementation features:

  •  real-time;
  •  compartibility within c54xx DSP family ;
  •  full comply with standard ITU-T G.722.1 (bit exact for all test vectors);
  •  C callable;
  •  eXpress DSP comartibility

Performance

 

24 kbps

G.722.1 coder

G.722.1 decoder

DSP peak load (MIPS)

3.2

3.9


 

32 kbps

G.722.1 coder

G.722.1 decoder

DSP peak load (MIPS)

3.3

4.4


Memory

Program, K words

3

Tables, K words

14

Data, K words

1.5

Total, K words

18.5

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Speech samples

You can download G.722.1 speech samples :

Original speech

g7221_in.wav

G.722.1 24 kbps

g7221_24_out.wav

G.722.1 32 kbps

g7221_32_out.wav

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Documentation

You can get compliant documents and specifications by e-mail.
ITU-T G.722.1 for TMS320C54x (Word)

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Navigation

Algorithm

Implementation

Speech samples

Documentation


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