[asterisk-users] How accurate is show translation?

[Derek Whitten]

James Harper wrote:
>  
>> Just to give you another (relative)  comparison... This is from a VIA
>> processor running at 533MHz, (64KB Cache) asterisk compiled as i586 as
>> it's missing some of the nicer MMX instructions:
>>
>>           g723   gsm  ulaw  alaw  g726 adpcm  slin lpc10  g729 speex
> ilbc
>>     g723     -     -     -     -     -     -     -     -     -     -
> -
>>      gsm     -     -    10    10    32    12     9    43     -     -
> 174
>>     ulaw     -    18     -     1    24     4     1    35     -     -
> 166
>>     alaw     -    18     1     -    24     4     1    35     -     -
> 166
>>     g726     -    36    20    20     -    22    19    53     -     -
> 184
>>    adpcm     -    19     3     3    25     -     2    36     -     -
> 167
>>     slin     -    17     1     1    23     3     -    34     -     -
> 165
>>    lpc10     -    42    26    26    48    28    25     -     -     -
> 190
>>     g729     -     -     -     -     -     -     -     -     -     -
> -
>>    speex     -     -     -     -     -     -     -     -     -     -
> -
>>     ilbc     -    49    33    33    55    35    32    66     -     -
> -
> 
> Hey... why does your asterisk allow translation to and from ilbc?
> 
> This is mine (Dual Celeron 533's):
>          Translation times between formats (in milliseconds)
>           Source Format (Rows) Destination Format(Columns)
> 
>          g723   gsm  ulaw  alaw  g726 adpcm  slin lpc10  g729 speex
> ilbc
>    g723     -     -     -     -     -     -     -     -     -     -
> -
>     gsm     -     -     7     7    13     7     6    17    39   100
> -
>    ulaw     -    17     -     1     8     2     1    12    34    95
> -
>    alaw     -    17     1     -     8     2     1    12    34    95
> -
>    g726     -    23     8     8     -     8     7    18    40   101
> -
>   adpcm     -    17     2     2     8     -     1    12    34    95
> -
>    slin     -    16     1     1     7     1     -    11    33    94
> -
>   lpc10     -    24     9     9    15     9     8     -    41   102
> -
>    g729     -    23     8     8    14     8     7    18     -   101
> -
>   speex     -    27    12    12    18    12    11    22    44     -
> -
>    ilbc     -     -     -     -     -     -     -     -     -     -
> -
> 
> And it won't translation ilbc to/from anything else. I had to buy some
> g729 licenses (a better option anyway though) because my voip provider
> only does alaw, g729, and ilbc, and I prefer to use alaw internally...
> 
> James
> 
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This is from a Dual 700Mhz/2MBcache/2GB ram machine.

         Translation times between formats (in milliseconds)
          Source Format (Rows) Destination Format(Columns)

         g723   gsm  ulaw  alaw  g726 adpcm  slin lpc10  g729 speex  ilbc
   g723     -     -     -     -     -     -     -     -     -     -     -
    gsm     -     -     3     3     8     3     2    10     -   118    41
   ulaw     -     7     -     1     7     2     1     9     -   117    40
   alaw     -     7     1     -     7     2     1     9     -   117    40
   g726     -    11     6     6     -     6     5    13     -   121    44
  adpcm     -     7     2     2     7     -     1     9     -   117    40
   slin     -     6     1     1     6     1     -     8     -   116    39
  lpc10     -    12     7     7    12     7     6     -     -   122    45
   g729     -     -     -     -     -     -     -     -     -     -     -
  speex     -    12     7     7    12     7     6    14     -     -    45
   ilbc     -    13     8     8    13     8     7    15     -   123     -


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