[Asterisk-Users] speex

[Adam Hart]

Actually it encodes a second of data, which with a 20ms codec would be 
50 frames. The timing shows better than expected results due to caching.

-Adam

brian wrote:

> http://asterisk.bkw.org/diff/translate.patch.txt
> 
> If you try that patch out it adds a nice feature...
> 
> show translation recalc [xx]
> 
> You can throw more than 1 sample thru it and recalculate your translation
> matrix.  It also allows you to see TRUE translation under a load or just
> when ever you feel like seeing them updated.  When * loads the codec it
> shoot one frame thru and times it.  Now under real world scenarios you will
> be shooting more than one frame thru so LETS have the option to update the
> matrix with these types of tests.  200 is the max.
> 
> bkw
> 
> 
> 
>>-----Original Message-----
>>From: asterisk-users-admin at lists.digium.com [mailto:asterisk-users-
>>admin at lists.digium.com] On Behalf Of James H. Cloos Jr.
>>Sent: Monday, May 17, 2004 11:24 AM
>>To: asterisk-users at lists.digium.com
>>Subject: [Asterisk-Users] speex
>>
>>Just a suggestion to anyone using speex:
>>
>>Try running the 1.1.5 or svn code rather than 1.0.3.
>>
>>As a quick example, here are the show translation outputs from * on a
>>2.8 GHz P4 with speex 1.0.3 (from debian sid's .deb) and from 1.1.5
>>(compiled with CFLAGS=-march=pentium4 and --enable-sse).
>>
>>Note how encoding from slin went from 25 to 15 ms.  That is from the
>>re-write of the sse optimized routines in libspeex.  The % change is
>>similar to what I saw on my p3 notebook, where both 1.0.3 and 1.1.5
>>were compiled with --enable-sse and -march=pentium3.
>>
>>(As a side note, these were captured before Brian's ilbc Makefile
>>patch made it to the anon cvs tree; that optimization shaved 5ms
>>off the time to encode to iLBC on that box.)
>>
>>spx103*CLI> show translation
>>         Translation times between formats (in milliseconds)
>>          Source Format (Rows) Destination Format(Columns)
>>
>>         G723   GSM  ULAW  ALAW  G726 ADPCM SLINR LPC10 G729A SPEEX  ILBC
>>   G723     -     -     -     -     -     -     -     -     -     -     -
>>    GSM     -     -     2     2     2     2     1     6     -    26    19
>>   ULAW     -     3     -     1     2     2     1     6     -    26    19
>>   ALAW     -     3     1     -     2     2     1     6     -    26    19
>>   G726     -     3     2     2     -     2     1     6     -    26    19
>>  ADPCM     -     3     2     2     2     -     1     6     -    26    19
>>  SLINR     -     2     1     1     1     1     -     5     -    25    18
>>  LPC10     -     4     3     3     3     3     2     -     -    27    20
>>  G729A     -     -     -     -     -     -     -     -     -     -     -
>>  SPEEX     -     3     2     2     2     2     1     6     -     -    19
>>   ILBC     -     5     4     4     4     4     3     8     -    28     -
>>
>>spx115*CLI> show translation
>>         Translation times between formats (in milliseconds)
>>          Source Format (Rows) Destination Format(Columns)
>>
>>         G723   GSM  ULAW  ALAW  G726 ADPCM SLINR LPC10 G729A SPEEX  ILBC
>>   G723     -     -     -     -     -     -     -     -     -     -     -
>>    GSM     -     -     2     2     2     2     1     6     -    16    19
>>   ULAW     -     3     -     1     2     2     1     6     -    16    19
>>   ALAW     -     3     1     -     2     2     1     6     -    16    19
>>   G726     -     3     2     2     -     2     1     6     -    16    19
>>  ADPCM     -     3     2     2     2     -     1     6     -    16    19
>>  SLINR     -     2     1     1     1     1     -     5     -    15    18
>>  LPC10     -     4     3     3     3     3     2     -     -    17    20
>>  G729A     -     -     -     -     -     -     -     -     -     -     -
>>  SPEEX     -     3     2     2     2     2     1     6     -     -    19
>>   ILBC     -     5     4     4     4     4     3     8     -    18     -
>>
>>
>>-JimC
>>--
>>James H. Cloos, Jr. <cloos at jhcloos.com> <http://jhcloos.com/voip>
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