Hi list !
I'm Patrick, a french student.
i am developping a kind of softphone for pocket PC using speex.
Sorry in advance for my bad english.
Till now, i had good results, but now i've a problem with encoding.
so to summarize, here is a short description of my work :
I'm working on pocket pc
I'm developing a GUI in C#
I'm developing a dll in C++ which use speex functions
I capture audio from microphone using windows wave API.
For it, I fill several buffers of 20ms, 160 samples.
When the first or one of this buffer is full, a callback is called by wave
API.
So, at this moment, i want to encode this audio data. (and write them in a
file)
But apparently, it's to slow, and consequently, all my data are not written.
I've read some topic about that, and i guess i need to use the fixed-point
stuff.
I tried to use speex_encode_int(...) instead of speex_encode(...)
but i have the same result when i read my file : no sound.
I tried as well to change quality and complexity, and i have same bad
result.
My program work correctly if i don't encode the data, i get a perfect sound.
So my problem is the encoding ...
So my question is,
how can i use fixed-point instead of floating-point ?
(maybe i need to specify "--enable-fixed-point" but how can i do that
on
VS2005 ? )
Thanks a lot for your help.
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Most important thing: have you compiled Speex with FIXED_POINT enabled? Jean-Marc Le mercredi 05 juillet 2006 ? 17:51 +0100, patrick andrieux a ?crit :> Hi list ! > > I'm Patrick, a french student. > i am developping a kind of softphone for pocket PC using speex. > Sorry in advance for my bad english. > > Till now, i had good results, but now i've a problem with encoding. > > so to summarize, here is a short description of my work : > I'm working on pocket pc > I'm developing a GUI in C# > I'm developing a dll in C++ which use speex functions > > I capture audio from microphone using windows wave API. > For it, I fill several buffers of 20ms, 160 samples. > When the first or one of this buffer is full, a callback is called by > wave API. > So, at this moment, i want to encode this audio data. (and write them > in a file) > > But apparently, it's to slow, and consequently, all my data are not > written. > I've read some topic about that, and i guess i need to use the > fixed-point stuff. > > I tried to use speex_encode_int(...) instead of speex_encode(...) > but i have the same result when i read my file : no sound. > I tried as well to change quality and complexity, and i have same bad > result. > My program work correctly if i don't encode the data, i get a perfect > sound. > So my problem is the encoding ... > > So my question is, > how can i use fixed-point instead of floating-point ? > (maybe i need to specify "--enable-fixed-point" but how can i do that > on VS2005 ? ) > > Thanks a lot for your help. > _______________________________________________ > Speex-dev mailing list > Speex-dev@xiph.org > http://lists.xiph.org/mailman/listinfo/speex-dev
If you look at the svn version of the code. In the win32/vs2005 directory is the vcproj file for speex. It already contains build configurations for windows mobile 5 pocketpc editions. You can use/look at that. Zen. patrick andrieux wrote:> Hi list ! > > I'm Patrick, a french student. > i am developping a kind of softphone for pocket PC using speex. > Sorry in advance for my bad english. > > Till now, i had good results, but now i've a problem with encoding. > > so to summarize, here is a short description of my work : > I'm working on pocket pc > I'm developing a GUI in C# > I'm developing a dll in C++ which use speex functions > > I capture audio from microphone using windows wave API. > For it, I fill several buffers of 20ms, 160 samples. > When the first or one of this buffer is full, a callback is called by > wave API. > So, at this moment, i want to encode this audio data. (and write them > in a file) > > But apparently, it's to slow, and consequently, all my data are not > written. > I've read some topic about that, and i guess i need to use the > fixed-point stuff. > > I tried to use speex_encode_int(...) instead of speex_encode(...) > but i have the same result when i read my file : no sound. > I tried as well to change quality and complexity, and i have same bad > result. > My program work correctly if i don't encode the data, i get a perfect > sound. > So my problem is the encoding ... > > So my question is, > how can i use fixed-point instead of floating-point ? > (maybe i need to specify "--enable-fixed-point" but how can i do that > on VS2005 ? ) > > Thanks a lot for your help. > ------------------------------------------------------------------------ > > _______________________________________________ > Speex-dev mailing list > Speex-dev@xiph.org > http://lists.xiph.org/mailman/listinfo/speex-dev >