VBAN RECEPTOR Lite - receive multicast on LAN ?

VB-Audio Network Protocol and applications
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qrq
Posts: 5
Joined: Mon Oct 24, 2016 12:33 pm

VBAN RECEPTOR Lite - receive multicast on LAN ?

Post by qrq »

I have not been able to find through search engines...whether or not this is possible,
to receive a udp multicast ip address VBAN EMITTER stream transmitted on multicast LAN(ie 224.1.14.1)
- using the VBAN RECEPTOR LITE mobile apps ?
Vincent Burel
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Posts: 1571
Joined: Sun Jan 17, 2010 12:01 pm

Re: VBAN RECEPTOR Lite - receive multicast on LAN ?

Post by Vincent Burel »

unicast or broadcast (broadcast works only on wired network).
we did not implement any multicast features.
qrq
Posts: 5
Joined: Mon Oct 24, 2016 12:33 pm

Re: VBAN RECEPTOR Lite - receive multicast on LAN ?

Post by qrq »

is Multicast possible in theory to add in the future ?
qrq
Posts: 5
Joined: Mon Oct 24, 2016 12:33 pm

Re: VBAN RECEPTOR Lite - receive multicast on LAN ?

Post by qrq »

We are trying to setup 10-20 streams to 10-20 possible SMART PHONEs for Assisted Listening hearing impaired...
using vban-emitter on a Raspberry PI 4...
however, the Raspberry PI 4 CPU for only 10 VBAN-EMITTERs, 1 stream per user, is getting so high using UNIcast, and BROADcast mode is horrible with stream breakups... so this is the reason for asking about if VBAN has MULTICAST possibilities

NOTE: higher and higher Raspberry PI 4 CPU use(in bold)

11329 pi 20 0 285256 6336 5708 R 12.8 0.2 1:03.62 vban_emitter
11416 pi 20 0 285256 6144 5516 S 12.8 0.2 1:01.05 vban_emitter
11489 pi 20 0 285256 6180 5552 S 12.5 0.2 0:55.67 vban_emitter
11637 pi 20 0 285256 6132 5504 S 10.5 0.2 0:51.61 vban_emitter
11697 pi 20 0 285256 6148 5520 S 10.2 0.2 0:49.39 vban_emitter
10877 pi 20 0 285256 6164 5536 S 9.9 0.2 1:27.07 vban_emitter
11530 pi 20 0 285256 6168 5540 S 9.5 0.2 0:54.75 vban_emitter
11661 pi 20 0 285256 6252 5624 S 9.5 0.2 0:49.77 vban_emitter
11554 pi 20 0 285256 6148 5520 S 9.2 0.2 0:52.59 vban_emitter
11582 pi 20 0 285256 6200 5572 S 9.2 0.2 0:51.57 vban_emitter
Vincent Burel
Site Admin
Posts: 1571
Joined: Sun Jan 17, 2010 12:01 pm

Re: VBAN RECEPTOR Lite - receive multicast on LAN ?

Post by Vincent Burel »

yes, WIFI AP are not able to manage broadcast or multicast streams.

So you may send Unicast stream to each device, like we did with VBAN-SPOT prototype presented on this page:
https://vb-audio.com/Voicemeeter/vban.htm

Sending stream over the network interface should not take CPU power, this is just memory transfer:
10 streams at 48kHz 16 bit stereo = 10 x 1.5 mbps = 15 mbps = 2 MB /second = nothing (even for 20 years old computer).

however you may configure your socket correctly (especially memory dimension / non bloking mode).
qrq
Posts: 5
Joined: Mon Oct 24, 2016 12:33 pm

Re: VBAN RECEPTOR Lite - receive multicast on LAN ?

Post by qrq »

there are at least 2 major companies that are providing HOUSE OF WORSHIP, ASSISTED LISTENING SYSTEMs, multicast "Audio over WiFi" via an Enterprise Level WiFi Router and simple audio transmitting hardware - out the Multicast WiFi network to the ANDROID & IOS Smart Phones that have connected:
1. Listen Everywhere https://www.listentech.com/assistive-li ... verywhere/
and
2. AudioFetch https://www.audiofetch.com/

They both have chosen to use MutiCast Audio over WiFi instead of unicast...

thus the reason i was curious about multicast for VBAN

...
Vincent Burel
Site Admin
Posts: 1571
Joined: Sun Jan 17, 2010 12:01 pm

Re: VBAN RECEPTOR Lite - receive multicast on LAN ?

Post by Vincent Burel »

ok, but we don't know any consumer WIFI AP doing Multicast ... better are able to convert MultiCast to Unicast (usually limited to 4 streams).
But, if you want to give me the reference of WIFI AP doing Multicast. we will check it.
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