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Discussion Groups | Speech Coding | AMR
Technical discussions related to Speech Coding (all itu and other vocoders, ACELP, CELP, AMR, etc)
AMR - phil_lancs2002 - Apr 9 13:20:00 2002
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Hey I'm working on a CELP AMR codec. The coder uses previous samples of the input speech, for windowing or creating the past excitation. So, my question is: what happened for the first frame ? Thank you, Phil. |
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AMR - Massimo Quagliani ROMA/ERI - Jul 16 12:13:00 2003
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Hello, does anyone know how the network configure the AMR_HR (Half rate) rather than AMR_FR(full rate)? Which is the difference between them? As far as I know the AMR algorithm has 8 bit rate codec but It is not clear to me how the channel codec mode (HR/FR) is changed from the network and which differences are between them. Thanks in advance /Max |
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