Hi, I am very glad to enter this mail list. i am a new guy,i am interested in
speech coding.so is there anybody working on this ? please contact me,thank
you.i am studing on fixed codebook search. and i have read almost all the
articals(including patent on this) about codebook search. but i found that all
the suboptimize methods have their own flaw. could anybody have some comments
on this?thank you very much. To today's topic: 1?i am not familiar with
arm platform,so i am sorry i can not help you.
?2007-07-23?speex-dev-request@xiph.org ???
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Speex-dev digest..." Today's Topics: 1. can't cross-compile
speex-1.2beta2 in ARM platform ( ? ) 2. Re: Server Side AEC (Tabitha Flash)
---------------------------------------------------------------------- Message:
1 Date: Fri, 20 Jul 2007 22:23:11 +0800 From: " ? "
<baoweiqin@gmail.com> Subject: [Speex-dev] can't cross-compile
speex-1.2beta2 in ARM platform To: speex-dev <speex-dev@xiph.org>
Message-ID: <45ac4c5c0707200723l5bd4b4cew5b3a17fa655dda80@mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1" Dear Sir, > I'm
trying to cross-compile speex-1.2beta2 in ARM platform. I configured > the
lib as "./configure --host=arm-linux ",it was right.While I did make
> ,I got an error like this, >
/usr/local/arm/lib/gcc-lib/arm-linux/3.2.3/../../../../arm-linux/bin/ld: >
.libs/lsp_tables_nb.o: Relocations in generic ELF (EM: 3) >
.libs/lsp_tables_nb.o: could not read symbols: File in wrong format >
collect2: ld returned 1 exit status > make[2]: *** [libspeex.la
<http://libspeex.la>] Error 1 > make[2]: Leaving directory
`/home/bao/speex-arm/libspeex' > make[1]: *** [all-recursive] Error 1
> make[1]: Leaving directory `/home/bao/speex-arm' > make: *** [all]
Error 2 > > Could anyone explain how to get rid of this error,thanks! >
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------------------------------ Message: 2 Date: Sun, 22 Jul 2007 14:51:28 +0100
(BST) From: Tabitha Flash <tabitha_flash@yahoo.co.uk> Subject: Re:
[Speex-dev] Server Side AEC To: Jean-Marc Valin
<jean-marc.valin@usherbrooke.ca> Cc: speex-dev@xiph.org Message-ID:
<675806.41850.qm@web86910.mail.ukl.yahoo.com> Content-Type: text/plain;
charset="iso-8859-1" Hi Jean-Marc, Regarding you points: 1) Is it ok
if the audio is encoded (using Nelly Moser ASAO) and sent to the client and
decoded when it is recevied so the AEC is always performed on raw PCM16 8KHZ ?
2) The audio is moved in 32ms (512 byte) chunks and the reading and writing to
the AEC code will be done by separate threads at regular 32 ms intervals. 3)
Occasionaly audio is dropped if it has become delayed but a jitter buffer of
120ms is in use. People at different distances from the server will have a
slightly different round trip time. Do you think if using a large tail or
something we can get near perfect AEC? The same as you get with a hands free
phone perhaps? Does it still sound like worth a try? Is Speex AEC as good as it
gets or would it be worth contacting some vendors of such software? Thanks
again, Tabby Jean-Marc Valin <jean-marc.valin@usherbrooke.ca> wrote:
Tabitha Flash a ?crit : > Hi, I am looking for AEC software which can be run
on the server > side. This means there will be a fairly constant 600ms or so
gap > between sending out an audio frame and getting it back with echo. >
Could Speex AEC be configured to handle these conditions? Just use a ring buffer
to put the delay back to normal. > If so, how > good can I expect it to
be? You'll need to try, but to have any chance of working, the following
conditions must be met: 1) No codec must be used in the echo path (maybe G.711
is OK) 2) There must not be any drift in the sampling clocks 3) There must not
be any audio samples lost on the echo path Jean-Marc
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