4 Jan
2016
4 Jan
'16
2:01 p.m.
Message: 3
Date: Sun, 3 Jan 2016 08:33:58 -0600
From: "Jonathan E. Brickman" <jeb(a)ponderworthy.com>
To: linux-audio-user(a)lists.linuxaudio.org
Subject: Re: [LAU] MIDI over wifi on Linux, revisited
Message-ID: <56893156.5080502(a)ponderworthy.com>
Content-Type: text/plain; charset="windows-1252"; Format="flowed"
<snip>
This is just a curious question from me on this topic.
I work in a theater that has a really crowded wifi spectrum and the
building is essentially a big metal box.
This includes a generic wifi node, all the wifi on the audience cell
phones, 2.4GHz body packs, and 2.4GHz crew comm.
We have noticeable dropout issues all the time.
I be afraid to run my MIDI over wifi...
PS: If anyone has a good solution to this sort of crowding, I'd love to
hear it. The best we've come up with is to disconnect the wifi node and
plead with the audience to use airplane mode. (moving the directional
antennas for the body packs helped for them, but still didn't completely
alleviate the issue.)
Regards,
Mac
3:17 p.m.
New subject: MIDI over wifi on Linux, revisited
On Mon, 4 Jan 2016 14:04:11 +0100, Christopher Arndt wrote:
Am 04.01.2016 um 14:00 schrieb Mac:
Rigid sentences for not turning off mobile devices in a location were
artists perform art. Since theatres usually are to expensive for
averaged workmen, usually just affluent boors can pay to visit theatres,
this issue is self-made by many theatres. Theatres should question their
target groups. Pretentious academic businessmen usually aren't really
art lovers. Visiting a theatre usually is a social event, were it is
important to appear important, IOW use the mobile device as much as
possible, to demonstrate that you are important.
The evidence was made by a German comedian, the pianist is speaking
English:
https://www.youtube.com/watch?v=RAx0P-8n5K4
Hape Kerkeling's Hurz
PS: If anyone has a good solution to this sort of
crowding,
For the moment, going to 5 Ghz will probably help. But this won't last
for long... 
5:29 p.m.
New subject: MIDI over wifi on Linux, revisited
On Mon, January 4, 2016 7:00 am, Mac wrote:
I work in a theater that has a really crowded wifi
spectrum and the
building is essentially a big metal box.
...
We have noticeable dropout issues all the time.
...
PS: If anyone has a good solution to this sort of
crowding, I'd love to
hear it.
The point of unlicensed ISM band operation is you get a lot of freedom to
play with different protocols, etc. because the power is low enough it
only affects your own premises.
If you can't control the broadcasting devices on your premises, then you
need to change to licensed spectrum devices (like UHF band microphones).
--
Chris Caudle
8:01 p.m.
New subject: MIDI over wifi on Linux, revisited
On Mon, January 4, 2016 7:00 am, Mac wrote:
Tried directional wifi antennas, and/or powerline networking, for
nonportable needs? Otherwise, indeed, licensed spectrum sounds to me
like the option. I would definitely take the crew comm off 2.4GHz off
one way or another, there are a lot more options for comm out there, and
no matter what doing this will help things.
--
Jonathan E. Brickman jeb(a)ponderworthy.com (785)233-9977
Hear us at http://ponderworthy.com -- CDs and MP3 now available!
<http://ponderworthy.com/ad-astra/ad-astra.html>
Music of compassion; fire, and life!!!
I work in a
theater that has a really crowded wifi spectrum and the
building is essentially a big metal box.
...
We have noticeable dropout issues all the time.
...
PS: If anyone has a good solution to this sort of
crowding, I'd love to
hear it.
The point of unlicensed ISM band operation is you get a lot of freedom
to
play with different protocols, etc. because the power is low enough it
only affects your own premises.
If you can't control the broadcasting devices on your premises, then you
need to change to licensed spectrum devices (like UHF band microphones).
8:54 p.m.
New subject: MIDI over wifi on Linux, revisited
Jonathan Brickman:
There are two ISM bands [1] you might consider, 450 and 900MHz.
There are things like rf serial port extenders or rf modems that could
possible solve your problem.
Have a look at:
https://www.elfa.se/search?q=rf+modem
http://se.farnell.com/webapp/wcs/stores/servlet/Search?pageSize=25&st=r…
http://se.farnell.com/webapp/wcs/stores/servlet/Search?pageSize=25&st=r…
http://se.farnell.com/webapp/wcs/stores/servlet/Search?pageSize=25&st=r…
To connect something like you might possible need some baudrate
and electrical converter, i.e. something that recv. midi 31500 baud
and sends at std. rs232 baudrate like 34800 or 115200 and conv.
between midi and rs232 voltages.
Perhaps there are dedicated midi over 900MHz tranceivers, who knows.
Regards,
/Karl Hammar
[1] https://en.wikipedia.org/wiki/ISM_band
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Sweden
+46 173 140 57
On Mon, January 4, 2016 7:00 am, Mac wrote:
...
The point of
unlicensed ISM band operation is you get a lot of freedom to
play with different protocols, etc. because the power is low enough it
only affects your own premises.
If you can't control the broadcasting devices on your premises, then you
need to change to licensed spectrum devices (like UHF band microphones).
Tried
directional wifi antennas, and/or powerline networking, for
nonportable needs? Otherwise, indeed, licensed spectrum sounds to me
like the option. I would definitely take the crew comm off 2.4GHz off
one way or another, there are a lot more options for comm out there, and
no matter what doing this will help things.
3248
days inactive
3248
days old
linux-audio-user@lists.linuxaudio.org
5 comments
6 participants
participants (6)
-
Chris Caudle -
Christopher Arndt -
Jonathan E. Brickman -
karl＠aspodata.se -
Mac -
Ralf Mardorf