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Receptor + Digital Performer audio dropouts

Discussion and Support for Receptor and MuseBox, the Hardware Plug-in players by Muse Research.

Moderators: Meffy, gary@museresearch, farhan, Kevin@MuseResearch, Bryan@MuseResearch

dapa12
KVRer
 
12 posts since 14 May, 2010

Postby dapa12; Sun Nov 21, 2010 5:11 pm Receptor + Digital Performer audio dropouts

I'm getting unacceptable audio dropouts using Digital Performer 7.21 on a MacBookPro connected via Uniwire to my Receptor 2 Pro Max with Komplete 5 inside. Akoustik Piano is great but not with the audio dropouts. Unfortunately, I read too late on the forum that I should not have upgraded my Mac OS to 10.6.4, but I had already done so. I've already set my DP Preferences to "audio plug-ins in real time", but that did not help. I tried disabling dual core mode and Zload on the Receptor and that also did not help. I'm only running DP by itself on the MacBook Pro and I've got 6 Mb RAM. I'm running a 256 buffer and a 48000 sample rate. Is there anything you can think of that I can do to eliminate the dropouts? Do I have to wait for a Uniwire and/or Receptor OS upgrade? :help: :help:
batgab
KVRist
 
271 posts since 22 May, 2008, from Lake Stevens, WA, USA

Postby batgab; Sun Nov 21, 2010 9:00 pm

The only thing I can think of is increasing your buffer size to something greater than 256. Have you tried that? I will also add that I don't have most of the software you mention, so maybe somebody else has some other ideas.

Good luck!
dapa12
KVRer
 
12 posts since 14 May, 2010

Postby dapa12; Mon Nov 22, 2010 4:12 pm

dapa12 wrote:I'm getting unacceptable audio dropouts using Digital Performer 7.21 on a MacBookPro connected via Uniwire to my Receptor 2 Pro Max with Komplete 5 inside. Akoustik Piano is great but not with the audio dropouts. Unfortunately, I read too late on the forum that I should not have upgraded my Mac OS to 10.6.4, but I had already done so. I've already set my DP Preferences to "audio plug-ins in real time", but that did not help. I tried disabling dual core mode and Zload on the Receptor and that also did not help. I'm only running DP by itself on the MacBook Pro and I've got 6 Mb RAM. I'm running a 256 buffer and a 48000 sample rate. Is there anything you can think of that I can do to eliminate the dropouts? Do I have to wait for a Uniwire and/or Receptor OS upgrade? :help: :help:


Thanks, batgab, I've tried that and it doesn't help; I get more latency with audio dropouts. I'm stumped at this point.
Kevin@MuseResearch
MUSEician
 
188 posts since 11 Feb, 2009

Postby Kevin@MuseResearch; Mon Nov 22, 2010 4:17 pm

Make sure your Apple airport card is turned OFF/completely disabled while running uniwire. Having this on will most certainly create dropouts.

- Kevin
dapa12
KVRer
 
12 posts since 14 May, 2010

Postby dapa12; Tue Nov 23, 2010 6:59 am

Thanks for the info Kevin; that had not occurred to me. I'll try it and post the results.
MacBook Pro, OSX Lion, Digital Performer 7.24, MOTU 828 mk3, Receptor 2 Pro Max with Komplete 6, Kore 2, M-Audio Keystation Pro 88, M-Audio Axiom 61! Mackie Universal Controller
dapa12
KVRer
 
12 posts since 14 May, 2010

Postby dapa12; Thu Nov 25, 2010 8:21 pm

I tried turning off Airport at the top menu (which I think is the right way to do it) plus increased the buffer to 512, but continue to get audio dropouts.
MacBook Pro, OSX Lion, Digital Performer 7.24, MOTU 828 mk3, Receptor 2 Pro Max with Komplete 6, Kore 2, M-Audio Keystation Pro 88, M-Audio Axiom 61! Mackie Universal Controller
Zappler
KVRer
 
8 posts since 10 Sep, 2009

Postby Zappler; Fri Nov 26, 2010 5:47 am

i think uniwire has problems with cubase and digital performer....In cubase the audio dropouts make it unusable for me but with logic 9 it works pretty fine.....dont use digital performer but maybe it help you.
dapa12
KVRer
 
12 posts since 14 May, 2010

Postby dapa12; Fri Nov 26, 2010 5:57 am

Thanks, Zappler; I'm going to try using Receptor Uniwire with Garageband as a test and see what happens. Meanwhile, can anybody at Muse verify the Uniwire-DP issue? Thanks to all with your help and hope you had a good Thanksgiving!
MacBook Pro, OSX Lion, Digital Performer 7.24, MOTU 828 mk3, Receptor 2 Pro Max with Komplete 6, Kore 2, M-Audio Keystation Pro 88, M-Audio Axiom 61! Mackie Universal Controller
Kevin@MuseResearch
MUSEician
 
188 posts since 11 Feb, 2009

Postby Kevin@MuseResearch; Tue Nov 30, 2010 10:09 am

dapa12,

What kind of processor is your system running? It could be an issue we've seen with some of the multi-core intel processors and DP.

- Kevin
dapa12
KVRer
 
12 posts since 14 May, 2010

Postby dapa12; Tue Nov 30, 2010 9:24 pm

Model Name: MacBook Pro
Model Identifier: MacBookPro3,1
Processor Name: Intel Core 2 Duo
Processor Speed: 2.4 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache: 4 MB
Memory: 6 GB
Bus Speed: 800 MHz
Boot ROM Version: MBP31.0070.B07
SMC Version (system): 1.18f5
MacBook Pro, OSX Lion, Digital Performer 7.24, MOTU 828 mk3, Receptor 2 Pro Max with Komplete 6, Kore 2, M-Audio Keystation Pro 88, M-Audio Axiom 61! Mackie Universal Controller
Kevin@MuseResearch
MUSEician
 
188 posts since 11 Feb, 2009

Postby Kevin@MuseResearch; Wed Dec 01, 2010 10:57 am

So, the question would be, if you start a new DP session and just have one Uniwire track, no other virtual instruments. How reliable is the connection?

A good way to test this is to put a couple measures of notes in the sequence on your Uniwire track and loop the 2 measures until you get a note dropout.

If your successful doing this (and don't have any drop outs) try adding a second uniwire track (and follow the same process). My suspicion is that you may see audio drop outs at that point. This is due to some kind of issue with the way DP is handling plugins within the 2 cores.

- Kevin
dapa12
KVRer
 
12 posts since 14 May, 2010

Postby dapa12; Sun Dec 05, 2010 2:53 pm

After turning off Airport, I followed your suggested process and had no audio dropouts with just one Uniwire track and no other virtual instruments. I added another Uniwire track and sure enough as you said, I experienced audio dropouts. I then deleted the second Uniwire track and added a DP supplied virtual instrument: Bassline. I recorded the bass over the first Uniwire track with no audio dropouts. I added a NI Kore 2 instrument to the mix and again recorded with no audio dropouts. I added the second Uniwire track back in and experienced audio dropouts immediately.

At that point, I began researching articles and forum threads, experimenting until I ended up with DP and Receptor adjustments that allows me to work with three Uniwire tracks (Akoustik Piano, Elektrik Piano and Kontact) plus the Bassline and Kore 2 instruments at once with little or no audio dropouts. I may get one dropout per hour of playing/recording, but that is negligible compared with the previous situation.

These are the procedures that were followed:

Turn Airport off (as you suggested in your earlier post)
Turn Dual Mode off on the Receptor (power the unit off and back on to ensure the Dual Mode stays off)
In Setup.Config Audio System> Config Studio Settings, disable the Prefill buffer and increase the Max Work Percent from 80% to 90% (devoting more processing to the audio engine).
In Preferences>Audio Plug-Ins> set all plugins to Real Time Mode
In Setup>Configure Audio System>Configure Audio Driver> Set Work Priority to Low

I hope this information is valuable to all those who experience DP/Receptor audio dropout issues.
MacBook Pro, OSX Lion, Digital Performer 7.24, MOTU 828 mk3, Receptor 2 Pro Max with Komplete 6, Kore 2, M-Audio Keystation Pro 88, M-Audio Axiom 61! Mackie Universal Controller
Kevin@MuseResearch
MUSEician
 
188 posts since 11 Feb, 2009

Postby Kevin@MuseResearch; Mon Dec 06, 2010 9:56 am

Thanks for taking the time to experiment with this a little further and post the details of your solution.
johnrangel
KVRer
 
2 posts since 29 Jun, 2010, from Santa Fe NM

Postby johnrangel; Sat Jan 01, 2011 8:14 am

I have a similar setup...

DP 7.22, MacBook Pro, OSX 10.6.5, and Komplete 7 installed on Receptor 2.

What seems to work form me is to sync my Receptor to the S/PDIF sync using the MOTU 896 as a clock. Use Crossover Ethernet instead of a hub.

Make sure in your audio setting the Virtual Instruments are in real time. For some reason that can actually cause Receptor to play track almost a second earlier in DP 7.

Some times I am too impatient negotiate with Uniwire as my audio input into DP 7, and I resort to the ADAT outs or Audio outs to get the job done.

Best,

John
dapa12
KVRer
 
12 posts since 14 May, 2010

Postby dapa12; Sun Jan 02, 2011 8:14 pm

Thanks for the info, John. My understanding was that Uniwire would handle synchronization between the Receptor and my MOTU 828mk3, but if it works for you, I'll try synching with a S/PDIF cable.

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