Re: windows 10 setting up SoX for live-streaming Mikrophone-->---LAN--------Soundcard realtime audio-transmission

[Jan Stary <hans@stare.cz>]

On Apr 25 19:06:45, sox-users@lists.sourceforge.net wrote:
> Ah ! I forgot to write about the real situation: *live*-streaming across the
> local network.
> 
> I'm working as a teacher and have to teach a class that is separated into
> two halfs
> each half in its own room to limit the number of persons per room.
> 
> I'm forced to use Big Blue Button as the video-conference solution.

Well, you already have your tool to do it then.

> Though the bandwidth of the internetconnection and/or the server-"bandwidth"
> to process the video-sreaming-data
> for a lot of conferences at the same time.   Is limited which causes lagging
> of the audio.

I find it strange that a video conferencing software would not keep sync
(not that it lags _as_a_whole_, that's understandable). Do you meen to
say that tha audio lags out of sync of how much the video lags?

> Under this circumstances (small bandwidth/overloaded server)   Big Blue
> Button is more like a   Little-Black-Hole
> that disrupts the data into nowhere-nexus  ;-)
> 
> So I'm searching for an alternative for "*live*-streaming the audio.

That might make the audio even more out of sync with the audio.

> If the rooms are next to each other an oldfashioned analog microphone
> connected to an oldfashioned analog amplifyer
> with a 50m long speaker-cable has 0 Milliseconds latency and is
> "rock-stable" as a neutron-star

Do youself a favour and install two unix machines;
this becomes a non-issue.

At any rate, this doesn't have much to do with sox.

	Jan



> 
> > > Am 25.04.2021 um 16:51 schrieb Jan Stary:
> > > > On Apr 25 15:54:13, dipl-ing.ludwig@mailbox.org wrote:
> > > > > Am 24.04.2021 um 20:31 schrieb Jan Stary:
> > > > > > On Apr 22 21:13:48, sox-users@lists.sourceforge.net wrote:
> > > > > > > I would like to use SoX for this scenario
> > > > > > > me speaking ----->  inbuild micrphone of my tablet (Windows 10)
> > > > > > > ---------->----------LAN------->---------second
> > > > > > > PC----->------soundcard---->----Amplifier------>Speaker ----> my words as
> > > > > > > *realtime* audio
> > > > > > I don't think this is a sox problem: any other audio application
> > > > > > will have to fit into that scenario similarly.
> > > > > > 
> > > > > > > If I understand right I have to setup IP-adresses and ports.
> > > > > > Well, obviously, if you want to send data over LAN.
> > > > > > This has nothing to do with SoX.
> > > > > > 
> > > > > > > Is there somewhere a collection of batch-files or a parameterlists
> > > > > > > that show which parameters and options I have to use for this?
> > > > > > No.
> > > > > > 
> > > > > > I you just want to send the audio unchanged to another machine,
> > > > > > SoX might not even be the tool for you: you just need one machine
> > > > > > to record, and send the data to the other machine (as you would
> > > > > > send any other data), and have the other machine play it back.
> > > > > > 
> > > > > > It this wasn't windows, I would put a one-liner here
> > > > > > that does exactly that.
> > > > > > 
> > > > > > Jan
> > > > > I have found this website
> > > > > https://www.streamingmediaglobal.com/Articles/Editorial/Featured-Articles/DIY-Rudimentary-Audio-Streaming-124222.aspx?utm_source=dlvr.it&utm_medium=feed&utm_campaign=iti%20roundup
> > > > > 
> > > > > Which shows how to do it with SoX. But it seems a description for how to do
> > > > > it on Linux-machines
> > > > Surprise: rec | nc
> > > > 
> > > > rec reads from a device and writes to stdout;
> > > > netcat reads from stdin and writes to a socket;
> > > > the opposite happens on the other end: nc | play.
> > > > 
> > > > On systems that have standard tools for fundamental things
> > > > (such as: read your input and send it down a network socket)
> > > > this is indeed a one-liner. But you are on windows;
> > > > maybe windows also has a netcat, I don't know.
> > > > 
> > > > Also note that this is not specific to SoX:
> > > > it could be arec/aplay with ALSA, or aucat/aucat on OpenBSD,
> > > > or any other program capable of recording/playback.
> > > > 
> > > > 	Jan
> > > > 
> > > > 
> > > > 
> > > > _______________________________________________
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> > > > Sox-users@lists.sourceforge.net
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> > > 
> > > 
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