Noise on scene change

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This topic contains 11 replies, has 7 voices, and was last updated by Profile photo of ddff_lv ddff_lv 9 years, 8 months ago.

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  • #22897
    Profile photo of ddff_lv
    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

    #29176
    Profile photo of RayS
    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

    #29180
    Profile photo of Stix
    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

    #29191
    Profile photo of ddff_lv
    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

    #29197
    Profile photo of SteffenR
    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

    #29239
    Profile photo of ddff_lv
    ddff_lv
    Participant

    There was no phaser in scenes.

    ddff

    #29341
    Profile photo of Robert
    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

    #29345
    Profile photo of sound
    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:
    http://iliveforum.allen-heath.com/topic.asp?TOPIC_ID=1723

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

    Thanks and greetings,
    Walter

    #29347
    Profile photo of AndyH
    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

    #29351
    Profile photo of sound
    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

    #29362
    Profile photo of AndyH
    AndyH
    Moderator

    Hi Walter,

    Thanks for the info,

    AndyH

    #29366
    Profile photo of ddff_lv
    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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