DP7 bouncy meters

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audiobrad
Posts: 18
Joined: Mon Nov 01, 2004 10:01 pm
Primary DAW OS: MacOS
Location: Minneapolis
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DP7 bouncy meters

Post by audiobrad »

Here's a weird one: when playing back audio files, the channel and audio monitor meters seem to bounce in wide (10-12 dB) swings in disproportion to the audio content. They also tend to hit the peak meters about 6-8 dB too soon. The content I am using was mastered on a ProTools rig with an L1 set at -1 dBFS, so I know it doesn't clip. But when these files are imported into DP, the meters clip until I reduce the channel fader to about -6. The meters seem to pulse wildly (even on a synth pad section) even though the fluctuation is only a few dB on PT, Dorroughs, or other meters. It's as if the amplitude is being modulated by a sine wave independent of the music. (But there is no audible pulsing and outboard meters read fine).

So the next thing I did was check some 1kHz tones at -20 dB and -1 dB. These playback perfectly at correct levels in DP. BUT HERE'S THE KICKER: when I stop playback of the tone, the meters almost always jump before settling to zero. So I took the tone and chopped it into 500 ms bursts with 500 ms space between - and the meters jump at the cutoffs and a 2nd smaller bounce (like an echo of the first bounce) in the silence between tone bursts. Note that I deactivated all track inputs to be sure there were no feedback loops. There was no processing and no MIDI - just a single track of audio playback (Mac Pro).

I should add that this may have been going on for a long time - I'm the studio owner and don't often use this system. The primary user is not as tech oriented about such things. We plan to upgrade to DP8 soon - maybe this will fix itself. Any ideas? (Sorry for the long post!) :sorry:
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ccrane
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Re: DP7 bouncy meters

Post by ccrane »

I have run into this a couple of times, a computer restart fixed the problem both times.
audiobrad
Posts: 18
Joined: Mon Nov 01, 2004 10:01 pm
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Re: DP7 bouncy meters

Post by audiobrad »

I wish rebooting worked in this case.
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Releaux
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Joined: Fri Oct 29, 2004 10:01 pm
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Re: DP7 bouncy meters

Post by Releaux »

I came across this post after a google search for "DP8 bouncy meters." I was experiencing the same issue described in the original post, though I didn't try all of the additional tests.

In my case, the restart fixed the issue. Just wanted to add an additional data point in case others come across this.
--
DP 11.3. |. MOTU 24Ai x2, Behringer ADA8200 x3, MOTU MTP-AV USB x2, MOTU MTP-AV x2.
Too much software, too much hardware, not enough time.
Mac Studio M1 Ultra (20/48 Core, 64GB Ram, MacOS 13.6.4 Ventura)
Mac Pro 5,1 (3.46GHz 12-core, 64GB Ram, MacOS 10.14.6 Mojave)
audiobrad
Posts: 18
Joined: Mon Nov 01, 2004 10:01 pm
Primary DAW OS: MacOS
Location: Minneapolis
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Re: DP7 bouncy meters

Post by audiobrad »

We suspect it was some kind of processing problem. It is gone in DP8.
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