[Freeswitch-users] Portaudio Improvements

[Seven Du]

I also would like to contribute more on FSComm when I have more free
time. I actually "stoled" some code from FSComm to a client I was
working on. We use a headset so AEC is not a big deal for now. But I
still would like to see AEC work for this. Actually someone reported
ECHO even with a headset I haven't confirm.  Is it possible to get
OSLEC work on Windows/Mac ?

In addition to AEC. I also found PA lacks the ability to change the
sound device volume. I tried to control sound devices in QT but
haven't find a way. Ideas on this?

Thanks.


On Sat, Jan 22, 2011 at 2:22 AM, Mitch Capper <mitch.capper at gmail.com> wrote:
> I did look into AEC a bit, although one of the best options for me looked
> like the DirectX AEC support, but obviously this would be windows only.
> There is oslec for linux which tries to do AEC at a driver level and is in
> the kernel.   The speex AEC processing does not look very complex
> (http://www.speex.org/docs/manual/speex-manual/node7.html using
> speex_echo_playback/speex_echo_capture).   Of course easier said then done,
> and does require passing it the audio in the structure it expects.  One of
> my main concerns is I do not also know about how good the speex AEC
> processing is for it to be worthwhile and would be curious if it has been
> found to give good results in voip settings (as I only saw to the contrary).
>
> Finally, it probably hasn't been too high on my list due to the fact that I
> have been using my client with a headset so the need is not really there.
>
> ~Mitch
>
> 2011/1/21 João Mesquita <jmesquita at freeswitch.org>
>>
>> Mitch, I will work on continuing FSComm for a thick client multi-platform
>> solution but one of the big show stoppers for me was the lack of AEC on
>> mod_pa.
>> I tried the preprocessors embedded on the core by Tony that are using the
>> speexdsp but I got no luck. The main tests I made were on a mac using the
>> speakerphone. Do you have any experience with this type of technology? It
>> seems to me that the only AEC available is the one implemented on speexdsp
>> but I am completely new to this.
>> Regards,
>> João Mesquita
>>
>>
>
>
>
>
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