OSC not being delivered consistently

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ahonoe
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Posts: 25
Joined: 07 Feb 2012 22:30

OSC not being delivered consistently

Post by ahonoe »

I'm finding that OSC messages aren't being consistently delivered by Lemur to Usine running on my laptop. Occasionally messages are also delayed. I'm able to recreate the problem on different wifi networks, with different computers and with different audio applications (including Usine and bidule).

Has anyone experienced anything similar?
Regards,

Scott
Phil999
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Joined: 11 Jan 2012 01:53

Re: OSC not being delivered consistently

Post by Phil999 »

no. I think the only thing that is to blame is the wireless connection, not the software.
Formant+Eurorack, PPG wave 2.2, Korg MS-20, etc., EWI 4000s, QuNeo, etc., Mixbus32c, u-he, MadronaLabs, Samplemodeling, NI, etc., iPad2/4/Pro
ahonoe
Newbie
Posts: 25
Joined: 07 Feb 2012 22:30

Re: OSC not being delivered consistently

Post by ahonoe »

I have recreated the problem on several computers running different receiving apps, attached to different wifi networks. First principles point to the only item that hasn't changed - Lemur for iPad.

Has anyone experienced or delayed reception of OSC messages sent from Lemur?
Regards,

Scott
Phil999
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Posts: 919
Joined: 11 Jan 2012 01:53

Re: OSC not being delivered consistently

Post by Phil999 »

with an ad-hoc network I never experienced any noticeable latency. At your place I assume it is a separate network device that makes this latency. Please provide more details about how you do the wireless network.
Formant+Eurorack, PPG wave 2.2, Korg MS-20, etc., EWI 4000s, QuNeo, etc., Mixbus32c, u-he, MadronaLabs, Samplemodeling, NI, etc., iPad2/4/Pro
Macciza
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Joined: 07 Dec 2011 04:57
Location: Sydney, Australia.

Re: OSC not being delivered consistently

Post by Macciza »

Hi
Really need more details - platform, network, data being sent etc etc Are you sending very large OSC packets?
Not being delivered? Delivered but corrupted? Delivered but out of sequence and not handled by receiver?
There are too many variables - udp itself is kinda 'lossy' no guarantees of delivery, error correction etc
Can you post a project that you are having problems with?

Cheers
MM
iMac 2.8G i7 12G 10.6.8/10.7.2, Legacy Dexter/Lemur, Liine Lemur/iPad2, KMI SoftStep, 12Step & QuNeo , B-Controls, Mackie C4 etc
MaxMSP, Live Suite, Native Instrument stuff, etc Modified Virtual Guitar System etc All Projects/Modules © CC-BY-NC-SA[*][/b]
ahonoe
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Posts: 25
Joined: 07 Feb 2012 22:30

Re: OSC not being delivered consistently

Post by ahonoe »

The iPad is running iOS v5.0.4 (9A405). It is connected to a 802.11g wifi network via a Sagemcom F@ST2864 DSL-2 modem/router. I have also tried using a second wifi router - a Linksys WG54N - with the same kind of results.

The test laptop is a Dell Latitude i7-2720QM running W7 Pro 32 SP1 with 4GB of RAM and a 500 GB SATA HD. The wireless NIC in the laptop is an Intel Centrino Ultimate N 6300AGN. The Windows Firewall is disabled and I'm not running any anti-virus or security software on the computers at all.

The machines are all running on a single subnet - 192.168.2.0

I am having this problem sending pretty much any message including a single integer value from the iPad to 2 different VST patching applications - bidule and Usine. Both show the same issue - 5 - 20% dropped messages. Not corrupted (that I can see). Simply the OSC messages are not acknowledged by the laptop.

I have tested the iPad using TouchOSC and this app works fine.

Attached is Lemur the layout I am testing with. Pretty simple I think.
Attachments
basic_osc_test.jzml
(6.52 KiB) Downloaded 116 times
Regards,

Scott
Phil999
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Posts: 919
Joined: 11 Jan 2012 01:53

Re: OSC not being delivered consistently

Post by Phil999 »

are you saying that with TouchOSC you have no latency, and with Lemur you do?
Formant+Eurorack, PPG wave 2.2, Korg MS-20, etc., EWI 4000s, QuNeo, etc., Mixbus32c, u-he, MadronaLabs, Samplemodeling, NI, etc., iPad2/4/Pro
ahonoe
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Posts: 25
Joined: 07 Feb 2012 22:30

Re: OSC not being delivered consistently

Post by ahonoe »

Yes. TouchOSC doesn't seem to demonstrate the problem.
Regards,

Scott
Phil999
Regular
Posts: 919
Joined: 11 Jan 2012 01:53

Re: OSC not being delivered consistently

Post by Phil999 »

sometimes it is better to follow the instructions to the letter (user manual, chapter 3). Like I said before, your routers may be the cause of jitter and latency.
Formant+Eurorack, PPG wave 2.2, Korg MS-20, etc., EWI 4000s, QuNeo, etc., Mixbus32c, u-he, MadronaLabs, Samplemodeling, NI, etc., iPad2/4/Pro
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