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PostPosted: Thu Sep 20, 2018 1:57 am 
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Joined: Sat Mar 23, 2013 1:43 am
Posts: 3
Location: Austin, TX
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NOISE EXAMPLE SHORTOZONE.mp3

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NOISE EXAMPLE FILTEREDOZONE.mp3




Hello everyone. Ive got a thread going over at good ol gearslutz and thought I might try here as well.

For the past couple of years Ive had an issue with intermittent digital sounding noise creeping in. The noise happens 3 or more times in a normal work day. It sounds kind of like cell phone interference, but not quite. It lasts about 5 seconds each time it shows up. I will hear the noise through the monitors, but the monitor controller volume setting has no effect on the loudness of the noise. The noise will print to record enabled tracks in pro tools. The noise will appear in guitar amps. I believe it to be related to the studio electricity. The building was completely rewired when I got it along with installing a new breaker panel. The ground rod is an old galvanized rod and will be replaced this week.

Ive been here about 5 years, and the noise just showed up about 2 years ago.

All computer equipment runs through a Cyber Power UPS. I had a tripp lite UPS for years and recently replaced it. No change in the noise.

All rack gear is on "power conditioners" and plugged into a tripp lite isobar.

All control room gear is on a dedicated 20 amp circuit.


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Signal Hill Recording
Austin, Texas


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PostPosted: Thu Sep 20, 2018 5:51 am 
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Joined: Wed Feb 01, 2017 6:03 pm
Posts: 519
Location: St. Albert, Alberta, Canada
What other businesses are in the building? Have you tried to make a connection between the sound an something like HVAC equipment turning on or off? Have you talked to other businesses in your building that may be turning on some equipment? Have you tried an isolation transformer?

Greg

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It appears that you've made the mistake most people do. You started building without consulting this forum.


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PostPosted: Mon Oct 15, 2018 2:12 pm 
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Joined: Sat Mar 23, 2013 1:43 am
Posts: 3
Location: Austin, TX
Yo! Im not sure how I missed your reply!

My building is a house on an acre and a half, so there aren't other business in my building. The noise occurs when the AC system is shut off. Also when the septic system is shut off. I have not tried an isolation transformer yet. Ive tried everything to correlate the noise with something, but it happens at random, and for only a few seconds at a time, that there isn't much time to figure anything out.

Ive tried the obvious things - shutting off modem and router, ac, septic, replaced an old UPS.

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Signal Hill Recording
Austin, Texas


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PostPosted: Tue Oct 16, 2018 12:40 am 
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Joined: Thu Aug 21, 2008 10:17 am
Posts: 11344
Location: Santiago, Chile
Hi. Please read the forum rules for posting (click here). You seem to be missing a couple of things! :)

- Stuart -

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