 Recording With Cracks And Pops, in Logic Pro |
 Fri 17 Feb 2006, 22:45
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#1
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 Member  Group: Members Posts: 66 Joined: 11-Oct 04 From: - PT Member No.: 52,995  |
Hi
I've noticed this problem: I have a Powerbook g4 15" OSX 10.4.4, a Lacie Firewire external disc, a Terratec Phase 24 firewire soundcard, an M-Audio Midisport 4x4 midi interface, a Clavia Nord Lead, a Waldorf Xtk, Yamaha Fs1r, Oberheim Matrix 1000 and an Yamaha 01V digital mixer. The digital out of the mixer is connected to the digital in of the soundcard. In Logic Pro 7.1, when I record the stereo out of the mixer thru the digital cable (spdif) into the soundcard I get cracks and pops. I'm always recording to the external disc (7200rpm). I've tried the Powerbook's hard disk and I get the same problem. Usually the recorded file sounds good at the beginning, but after some minutes it starts to have those cracks and glitches. And I'm sure they're recorded. It´s not a playback problem. I'm recording at 24bit 44100hz. I've tried recording second time and it had no cracks and pops ! Does Logic need to play all the song before it is recorded ? Do I have something wrong on my preferences ? Is this a bug ? I've also noticed that when I use Kontakt 2 and I play a song for the first time, as soon as the song pointer reaches the Kontakt notes Logic stops with the following message: " CoreAudio System Overload.The audio engine was not able to process all required data in time.(-10011)". When I play the song the second time, Kontakt plays with no problems and the song doesn't stop. Is this related to the cracks and glitches problem in some way ? What do you think ? Thank you. Alex |
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 Sun 26 Mar 2006, 15:42
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#21
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 Moderator In Chief (MIC)  Group: Editors Posts: 15,189 Joined: 23-Dec 01 From: Paris - FR Member No.: 2,758 |
Time to go for some power conditionner or UPS (on-line models only) or balanced mains…
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Mon 27 Mar 2006, 01:28
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#22
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Member Group: Members Posts: 66 Joined: 11-Oct 04 From: - PT Member No.: 52,995 |
QUOTE (lepetitmartien @ Mar 26 2006, 14:42) Time to go for some power conditionner or UPS (on-line models only) or balanced mains… yeah, for sure !... |
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Thu 30 Mar 2006, 01:40
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#23
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 Maniac Member Group: Members Posts: 899 Joined: 12-Oct 01 From: Kirkland Member No.: 2,002 |
You may also want to have an electrician look at your power circuits. It my be a loading problem, could be dangerous if it's an older building.
-------------------- G-Dub
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Thu 30 Mar 2006, 16:28
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#24
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Newbie Group: Validating Posts: 21 Joined: 18-Dec 05 From: Albuquerque - US Member No.: 74,080 |
Were you recording OK before & this recording noise or interference is new? I ask again because not sure you answered. Was anything different before than after this problem?
Noise: More technically referred to as Electro-Magnetic Interference (EMI) and Radio Frequency Interference (RFI), electrical noise disrupts the smooth sine wave one expects from utility power. CAUSE - Electrical noise is caused by many factors and phenomena, including lightning, load switching, generators, radio transmitters and industrial equipment. It may be intermittent or chronic. EFFECT - Noise introduces glitches and errors into executable programs and data files. Be sure the UPS gear you purchase has power conditioning built into it. Some Uniterruptable Power Supplies do not. And it sounds more like a power interference problem which needs conditioning to get rid of it. Here's an international web site that offers products and solutions with a local web page. http://www.apc.com/products/ -------------------- dB= deciBell. (CAPITOL "B") In honor of Alexander Graham...
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Thu 30 Mar 2006, 23:42
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#25
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Member Group: Members Posts: 66 Joined: 11-Oct 04 From: - PT Member No.: 52,995 |
QUOTE (gdoubleyou @ Mar 30 2006, 00:40) You may also want to have an electrician look at your power circuits. It my be a loading problem, could be dangerous if it's an older building. 1865 ! |
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Thu 30 Mar 2006, 23:43
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#26
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Member Group: Members Posts: 66 Joined: 11-Oct 04 From: - PT Member No.: 52,995 |
QUOTE (jce44 @ Mar 30 2006, 15:28) Were you recording OK before & this recording noise or interference is new? I ask again because not sure you answered. Was anything different before than after this problem? Noise: More technically referred to as Electro-Magnetic Interference (EMI) and Radio Frequency Interference (RFI), electrical noise disrupts the smooth sine wave one expects from utility power. CAUSE - Electrical noise is caused by many factors and phenomena, including lightning, load switching, generators, radio transmitters and industrial equipment. It may be intermittent or chronic. EFFECT - Noise introduces glitches and errors into executable programs and data files. Be sure the UPS gear you purchase has power conditioning built into it. Some Uniterruptable Power Supplies do not. And it sounds more like a power interference problem which needs conditioning to get rid of it. Here's an international web site that offers products and solutions with a local web page. http://www.apc.com/products/ the problem was always present . i'll definetely follow your advices. thank you ! |
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