[android-beginners] Re: real-time audio transfer over Wi-Fi

2009-09-29 Thread Roman ( T-Mobile USA)

Based on your description there are no problems writing such an
application.

My understanding is that your connection is only half-duplex, means
you send the traffic only in one direction. When I mentioned that with
mixing Voip and data traffic in a Wifi network the quality of your
connection could decrease, I wanted to say that in your WLAN there
might be also other systems communicating over Wifi.

Android SDK does not support specifically audio streaming which is
recorded over the mic (there are no APIs for Voip :-( ). You have to
think about the following

+ signaling
+ RTP streaming

For the signaling you can use your own proprietary protocol or an
existing protocol like SIP or XMPP (have a look at SipDroid which uses
MjSIP)

Also SipDroid implements some RTP socket communication which you can
use in your application.

--
Roman Baumgaertner
Sr. SW Engineer-OSDC
·T· · ·Mobile· stick together
The views, opinions and statements in this email are those of the
author solely in their individual capacity, and do not necessarily
represent those of T-Mobile USA, Inc.

On Sep 28, 10:32 pm, kevin j  wrote:
> This is helpful. I wouldn't call what I'm doing Voip, though it is
> similar. Without going through the Internet, I want to send audio or
> data to a nearby Wi-Fi enabled PC. I don't need to mix the two,
> because I'm only sending one type at a time. Would the SDK Voip
> services still apply to this situation, ie, will the SDK support this
> type of Voip?
>
> On Sep 21, 12:39 pm, "Roman ( T-Mobile USA)" 
> mobile.com> wrote:
> > Android gives you the support to doreal timeaudio (Voip) on SDK
> > level.
>
> > As a good example check out the app SipDroid. If you mix Voip traffic
> > with data traffic,
> > you might get a different audio quality overWifi. The reason is that
> > normal data traffic has different traffic characteristics then Voip
> > overWifi.
>
> > You will find research papers on this topic which talk about mixing
> > different traffic types on aWifinetwork.
>
> > --
> > Roman Baumgaertner
> > Sr. SW Engineer-OSDC
> > ·T· · ·Mobile· stick together
> > The views, opinions and statements in this email are those of the
> > author solely in their individual capacity, and do not necessarily
> > represent those of T-Mobile USA, Inc.
>
> > On Sep 20, 7:14 pm, kevin j  wrote:
>
> > > I would like to know if the following application is possible given
> > > the currently available tools and OS services. I want to send audio
> > > from the microphone inreal-timeover Wi-Fi to a Windows desktop
> > > application. I also want to send data which represents what screen
> > > icons have been tapped. I want to receive audio and data the same way
> > > - using Wi-Fi.
>
> > > Sincerely,
>
> > > Kevin J- Hide quoted text -
>
> > - Show quoted text -
>
>
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[android-beginners] Re: real-time audio transfer over Wi-Fi

2009-09-28 Thread kevin j

This is helpful. I wouldn't call what I'm doing Voip, though it is
similar. Without going through the Internet, I want to send audio or
data to a nearby Wi-Fi enabled PC. I don't need to mix the two,
because I'm only sending one type at a time. Would the SDK Voip
services still apply to this situation, ie, will the SDK support this
type of Voip?


On Sep 21, 12:39 pm, "Roman ( T-Mobile USA)"  wrote:
> Android gives you the support to doreal timeaudio (Voip) on SDK
> level.
>
> As a good example check out the app SipDroid. If you mix Voip traffic
> with data traffic,
> you might get a different audio quality overWifi. The reason is that
> normal data traffic has different traffic characteristics then Voip
> overWifi.
>
> You will find research papers on this topic which talk about mixing
> different traffic types on aWifinetwork.
>
> --
> Roman Baumgaertner
> Sr. SW Engineer-OSDC
> ·T· · ·Mobile· stick together
> The views, opinions and statements in this email are those of the
> author solely in their individual capacity, and do not necessarily
> represent those of T-Mobile USA, Inc.
>
> On Sep 20, 7:14 pm, kevin j  wrote:
>
>
>
> > I would like to know if the following application is possible given
> > the currently available tools and OS services. I want to send audio
> > from the microphone inreal-timeover Wi-Fi to a Windows desktop
> > application. I also want to send data which represents what screen
> > icons have been tapped. I want to receive audio and data the same way
> > - using Wi-Fi.
>
> > Sincerely,
>
> > Kevin J- Hide quoted text -
>
> - Show quoted text -
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[android-beginners] Re: real-time audio transfer over Wi-Fi

2009-09-21 Thread Roman ( T-Mobile USA)

Android gives you the support to do real time audio (Voip) on SDK
level.

As a good example check out the app SipDroid. If you mix Voip traffic
with data traffic,
you might get a different audio quality over Wifi. The reason is that
normal data traffic has different traffic characteristics then Voip
over Wifi.

You will find research papers on this topic which talk about mixing
different traffic types on a Wifi network.

--
Roman Baumgaertner
Sr. SW Engineer-OSDC
·T· · ·Mobile· stick together
The views, opinions and statements in this email are those of the
author solely in their individual capacity, and do not necessarily
represent those of T-Mobile USA, Inc.



On Sep 20, 7:14 pm, kevin j  wrote:
> I would like to know if the following application is possible given
> the currently available tools and OS services. I want to send audio
> from the microphone in real-time over Wi-Fi to a Windows desktop
> application. I also want to send data which represents what screen
> icons have been tapped. I want to receive audio and data the same way
> - using Wi-Fi.
>
> Sincerely,
>
> Kevin J
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