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Author Topic: Low latency Audio broadcasting over LAN (Cheaply)  (Read 30575 times)

Lee Buckalew

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Re: Low latency Audio broadcasting over LAN (Cheaply)
« Reply #10 on: May 22, 2016, 11:37:04 PM »

That's interesting, Lee, I hadn't heard of that one.
A bit of overkill for my purpose, in that it's more than 1 stream, has a large transmitter and likely won't tick the 'cheap' box... ;-)

Yeah, just checked pricing, not "cheap".

Lee
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Lee Buckalew
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Lee Buckalew

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Re: Low latency Audio broadcasting over LAN (Cheaply)
« Reply #11 on: May 22, 2016, 11:41:30 PM »

Not sure what the corporate setup for this is… but my GUESS is that Audivero (the people behind unity intercom) developed this and Williams Sound bought it…

http://www.audivero.com/

http://www.hearinghotspot.com/

I remember stumbling upon it when Pete first shone the light in Unity Intercom, but don't recall Williams involvement at the time.

Just looked up the Williams too.  Very pricey plus a $99.00/month subscription fee.

Lee
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Steve Anderson

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Re: Low latency Audio broadcasting over LAN (Cheaply)
« Reply #12 on: May 22, 2016, 11:43:25 PM »

Just looked up the Williams too.  Very pricey plus a $99.00/month subscription fee.

Lee

Ouch!

Yeah, had no idea on pricing.
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Tom Bourke

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Re: Low latency Audio broadcasting over LAN (Cheaply)
« Reply #13 on: May 23, 2016, 12:42:56 AM »

Take some time and look at asterisk.  It is very flexible, has free IOS apps, and is free open source it self.  I think it could do it with enough research and testing.  I have used it to bridge the bell and intercom systems of two buildings sharing a LAN.
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John J Saunders

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Re: Low latency Audio broadcasting over LAN (Cheaply)
« Reply #14 on: May 23, 2016, 01:52:52 AM »

Another person mentioned it but I would second looking into barix. Very low latency and sometimes you can find some of their encoders on eBay cheap.
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Scott Holtzman

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Re: Low latency Audio broadcasting over LAN (Cheaply)
« Reply #15 on: May 23, 2016, 01:54:42 AM »

Take some time and look at asterisk.  It is very flexible, has free IOS apps, and is free open source it self.  I think it could do it with enough research and testing.  I have used it to bridge the bell and intercom systems of two buildings sharing a LAN.

In my other life I am deeply involved in the FreePBX project, a distribution of Asterisk with an easy to use web interface.  Mark Spencer, the creator of Asterisk is a good friend and fellow pilot.

Anyway,  what are your fidelity requirements?  How many receiver streams?  The H.323 CODEC should provide decent fidelity.  The Intercom module can do point to multipoint. 

There are mutlicast solutions.

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Chris Johnson [UK]

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Re: Low latency Audio broadcasting over LAN (Cheaply)
« Reply #16 on: May 23, 2016, 03:05:28 AM »

Your main latency issue here will be the Wifi component. In a larger space, with APs that have many clients, I would expect the wifi latency alone to be > 50ms.

I'm sitting here in my living room, 3m LOS from my wifi AP that has only <5 clients and my ping times to my server (on the LAN) are between 3 and 10ms.

If you really have to have sub 50ms latency, you will struggle with wifi.
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Andrew Broughton

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Re: Low latency Audio broadcasting over LAN (Cheaply)
« Reply #17 on: May 23, 2016, 03:53:02 AM »

I note Barix have an iOS client; I'd call them and see if they can help.
Another person mentioned it but I would second looking into barix. Very low latency and sometimes you can find some of their encoders on eBay cheap.

Thanks for the tip! I hadn't heard of them before.
The Barix look like the same device as the Deva, perhaps based on the same circuitry...
But, it seems to be what I'm looking for, if I don't want to roll my own with a Raspberry Pi... (Doesn't look that easy).
The Barix is about $365, ($329 eBay) the Deva $500 ($425-ish some places), so I might just spring for it.

Thanks, everyone!
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fabra

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Re: Low latency Audio broadcasting over LAN (Cheaply)
« Reply #18 on: March 22, 2020, 12:54:57 PM »

You could consider to use AVB. This is supported natively on Macs.
XMOS provides reference design for low cost endpoint boards.
Many professional audio equipment manufactuers jump on AVB as well - see Milan https://avnu.org/Milan/
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Mac Kerr

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« Reply #19 on: March 22, 2020, 01:10:40 PM »

You could consider to use AVB.

Please go to your profile and change the "Name" field to your real first and last name as required by the posting rules displayed in the header at the top of the section, and in the Site Rules and Suggestions in the Forum Announcements section, and on the registration page when you registered.

Mac
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« Reply #19 on: March 22, 2020, 01:10:40 PM »


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