[Asterisk-Users] speex

[brian]

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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