Topic: Noise on scene change | Allen & Heath Digital Community

Noise on scene change

This topic contains 11 replies, has 7 voices, and was last updated by ddff_lv 12 years, 7 months ago.

Viewing 12 posts - 1 through 12 (of 12 total)

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2011/08/31 at 7:25 pm #22897

ddff_lv
Participant

Has anyone experienced a short and loud sound like a feedback? I had this surprise last night, sounded like effect been sent to itself- very strange and “digitally sounding” feedback. It’s gone when scene is fully loaded. It takes about 1.5 sec to load and the sound was there for 300 … 500 ms.

ddff

2011/08/31 at 9:51 pm #29176

RayS
Participant

quote:

Originally posted by ddff_lv

Has anyone experienced a short and loud sound like a feedback? I had this surprise last night, sounded like effect been sent to itself- very strange and “digitally sounding” feedback. It’s gone when scene is fully loaded. It takes about 1.5 sec to load and the sound was there for 300 … 500 ms.

ddff

Hi, I seem to remember someone else had a similar problem recently, turned out to be something in one of the scenes (perhaps a pre amp gain or trim change ??) try a search of the archives or make sure the offending scene(s) is “clean” that is has no sudden gain changes or a repatch etc……

RayS

R-72/iDR32/iPS10

2011/09/01 at 4:23 am #29180

Stix
Participant

Or it could be phantom power coming on somewhere in the new scene – I also recall something in an old post about this.

Cheers

Richard Howey
Audio Dynamite Ltd
IDR48/IDR16/T112/R72/Mixpad,Tweak,
Dual M-Dante/DVS, 17″MBP/Logic 9/Custom Mackie Control

2011/09/01 at 8:47 pm #29191

ddff_lv
Participant

No scenes did not have any gain or phantom status changes- just mutes. It was my post about an eathquake on phantom status change with scene- this has logical explanation. Basically that setup was quite simple- i had 2 PA systems one fed from mains, sub from matrix and secondary PA from a stereo group. First 10 channels were routed to secondary PA only, other 30 to main PA. Scene 1 had first 10 channels open, group unmuted and sent to matrix (subs). Scene 2 had first 10 channels muted, group muted, last 30 channels open and sent to main and also matrix (subs).
Nothing complicated, I think.

ddff

2011/09/01 at 11:55 pm #29197

SteffenR
Participant

This problem occures when you recall a MOO Phaser.
That was my problem some time ago…

SRV-AVB
R-72, iDR-16, xDR-16

2011/09/02 at 7:40 pm #29239

ddff_lv
Participant

There was no phaser in scenes.

ddff

2011/09/13 at 10:15 am #29341

Robert
Participant

Yea i had the same feedback on scene change! i had some channels on recall save all other channels muted, the feedback was about less than 1 second, i think it happens due to very very very long scene loading time!!!!, the scenes were almost identical but there was some changes in pre amp and pad settings, probably iLive makes the pad , pre amp & patch settings to slow ..

agutin.com
2x iDR32 +MADI OPTION
MacBook,
desktop+2x RME HDSP MADI 2 X M DANTE CARDS

2011/09/13 at 11:34 am #29345

sound
Participant

quote:

Originally posted by Robert

…, probably iLive makes the pad , pre amp & patch settings to slow ..

Seems to be related to my problem:
https://iliveforum.allen-heath.com/topic.asp?TOPIC_ID=1723

Any statement from A&H? This is a serious problem…

Thanks and greetings,
Walter

2011/09/13 at 1:17 pm #29347

AndyH
Moderator

Hi,

In v1.7 we noticed there was a slight error in the gate and compressor side chain filter settings. We correct this ‘on the fly’ so every time you recall an old scene, it’ll take a little longer to process. So if you are running v1.72 or v1.8 we recommend users recall each scene, and re-save their scene. This will result in quicker scene recalls. For more information on this issue please see the 1.8 iLive Release Notes.

If you are still experiencing the problem after this, then I think we need to examine your show file to see what is causing your issue. It’s easier for us if you contact our Technical Support team with your show, as sending and receiving files on the forum is rather difficult.

I hope that helps,

AndyH

2011/09/13 at 3:54 pm #29351

sound
Participant

Andy,

easy to reproduce:

IP channel with a continuous signal source connected.
Assign that channel to a DCA.
Channel Mute ON DCA Mute OFF
Save to scene 1
Channel Mute OFF DCA Mute ON
Save to scene 2.
Everytime you switch scenes (1->2 or 2->1) the channel is live for a short period.

Greetings,
Walter

2011/09/14 at 10:19 am #29362

AndyH
Moderator

Hi Walter,

Thanks for the info,

AndyH

2011/09/14 at 5:56 pm #29366

ddff_lv
Participant

Yes, it looks like sequential recall, so that’s a good way to lose your job or make audience to s?&@t their pants. I solved the situation by creating extra scenes where everything is muted, so instead of recalling one scene I recall two.

ddff
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