Broadcasting over WIFI - AVS Forum
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post #1 of 8 Old 02-03-2013, 11:05 AM - Thread Starter
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Dear All,

Experts needed!!

I am undertaking a project where i desperately need help.

I am aiming to push sound via wifi to users devices (ipads, iphones, Samsung devices etc possibly via VLC media player or a similar client).

Now heres the rub. I need the sound to play simultaneously to all the devices. The sound file would be an hour or two worth of broadcasting or streaming all via wifi.

How does one go about this? A vbrick or similar? Any software solution? Different type of hardware solution?

Any ideas of costs?

I would ideally want the client side to be free but dont mind paying on the server side.

Any help would be most appreciated

Best wishes,

Asif
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post #2 of 8 Old 02-03-2013, 02:57 PM
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Hi Asif,

Welcome to the forum.

I'm not sure you can accomplish what you are attempting, depending on how you define "simultaneously". If you mean to have all devices playing in sync, such that hearing multiple devices all sound as one, then you are unlikely to get there with dissimilar devices. Wifi will also be an issue.

The only devices that I am aware of that allow synchronized audio are Airplay devices and Sonos. Neither use wifi. It is possible to do this with wifi, but only if you use multicast, and I don't know of any devices that support multicast (VLC probably does). Even with multicast, each device would need to maintain the same amount of data in its buffer in order to stay in sync.

If you don't need all devices to stay in sync, then you could look for software that supports the SIP and RTP internet protocols.
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post #3 of 8 Old 02-05-2013, 04:27 AM - Thread Starter
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Hi Mark,

Many thanks for that.

Yes all devices need to be in syn. Basically all users would in effect watch a movie on a large screen but sound would be piped to the devices via wifi.

or that what we were aiming for anyway.

Airplay and Sonos? they are a type of speakers if im correct?

I would ideally need something inexpensive for around 50 users.

Seems a simple idea when we first thought about it but its quite complicated it seems.

Many thanks for your insight. Much appreciated Mark

Asif
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post #4 of 8 Old 02-05-2013, 02:33 PM
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Hi Asif,
Quote:
Originally Posted by asifw View Post

Airplay and Sonos?
AirPlay is an Apple wireless protocol for sending audio and video to Apple devices. Some non-Apple devices, mostly AVRs, also support Airplay, primarily to be able to stream content coming from the AVR, like your music library or Internet radio, to your iPhone or iPad. It would work if you limited your network to Apple or other Airplay devices.

Sonos is a proprietary wireless HiFi system. If you are looking for something inexpensive, this isn't it.
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post #5 of 8 Old 02-05-2013, 04:48 PM
 
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Airmusic can be used on iOS devices (iPhone/iPad/iPod Touch), and streams through DLNA. Same would be with the Samsung.
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post #6 of 8 Old 02-05-2013, 05:00 PM
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Hi Greg,
Quote:
Originally Posted by gregzoll View Post

Airmusic can be used on iOS devices (iPhone/iPad/iPod Touch), and streams through DLNA. Same would be with the Samsung.
True. But DLNA does not yet allow synchronized playback, does it?
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post #7 of 8 Old 02-06-2013, 03:47 PM
 
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Quote:
Originally Posted by MarkHotchkiss View Post

Hi Greg,
Quote:
Originally Posted by gregzoll View Post

Airmusic can be used on iOS devices (iPhone/iPad/iPod Touch), and streams through DLNA. Same would be with the Samsung.
True. But DLNA does not yet allow synchronized playback, does it?
Only way, would be that the users connect to the devices. With iOS, it would have to be done through iTunes, if they want to connect multiple devices to the same media file. Their best bet if video, would be just to have the video on something like Youtube as a private share, using VLC on the devices, or even play off of Dropbox.com if the user is offsite and not connected to the LAN, which would work for both video & audio.

Not that hard to do, if you just try not to make something harder than it should be. Also, there is no way that every user is going to sit there watching the whole loop, or listening to it the whole time, most will just stop it and go on their way, doing something else.
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post #8 of 8 Old 03-13-2014, 10:16 AM
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Hey guys,

 

I just came across this thread and I would like to say that I have been working on a technology that might interest you all. :)

I have been working on it for 6 months now.

 

Its called the Übercaster, a Real-Time Audio Broadcaster WiFi Hotspot. (http://echosdesign.com)

 

Demo Video:http://vimeo.com/88467399 and http://vimeo.com/85006122

 

Technical Specifications

  • Tested Max # of Clients: 25 Smartphones
  • Audio Latency: <50ms for iOS (iPhone 5S/5C) and 80ms Android (Google Nexus 7 2013)
  • Power: Li-Ion Battery or Wall Adapter
  • Battery Life: 5.5 hours with 2800mAh
  • Input: 3.5mm Audio
  • Max Functioning Range: 75ft
  • Dual-Band
  • Mobile Apps are Small and Easily Integrateable
  • Power Consumption in Broadcasting Mode: 2.2W

 

 

Let me know your thoughts!

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