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Gear / Technical Help => Post-Processing, Computer / Streaming / Internet Devices & Related Activity => Topic started by: mikesalvo on March 18, 2007, 01:35:47 PM

Title: bad right channel, h0ow do I duplicate right using Audacity???
Post by: mikesalvo on March 18, 2007, 01:35:47 PM
hey all. so I used my Zooms built in mics to stealth at The Beacon this weekend. Unfortunately because of the spot I was able to get, I had to clamp the deck so the mics were not in the best position. now I have a delay between my left and right channels. Whats the easoiest way for me to fix this? I have a decent source for a show alot of folks here will want, just need to fix it ASAP. I am using Audacity. I am not GREAT at using it yet. Any help would be appreciated.

thanks a bunch ya'll!
Title: Re: bad right channel, h0ow do I duplicate right using Audacity???
Post by: Brian Skalinder on March 18, 2007, 02:08:50 PM
I'm not sure I understand the problem.  The Zoom's built-in mics are oriented XY, aren't they?  Which means there shouldn't be a substantial time-arrival difference (delay) from one channel to the next.  Post a short WAV sample?
Title: Re: bad right channel, h0ow do I duplicate right using Audacity???
Post by: mikesalvo on March 18, 2007, 02:12:16 PM
hey Brian, indeed they are, but unfortunately the only way I could miount was so that the mics were positioned vertically instead of horizontally. Im assuming this is what caused the problem. Anyway, how can I fix this?

thanks alot.
Title: Re: bad right channel, h0ow do I duplicate right using Audacity???
Post by: Brian Skalinder on March 18, 2007, 02:29:35 PM
Post a WAV (not MP3) sample from the master (unedited) WAV?
Title: Re: bad right channel, h0ow do I duplicate right using Audacity???
Post by: mikesalvo on March 18, 2007, 03:08:51 PM
I have a 60 second sample for ya, but the board wont let me post it (can you tell ive never done this). I assume its because the file is to large. How can I post this?
Title: Re: bad right channel, h0ow do I duplicate right using Audacity???
Post by: Brian Skalinder on March 18, 2007, 03:12:33 PM
Quote from: mikesalvo on March 18, 2007, 03:08:51 PM
I have a 60 second sample for ya, but the board wont let me post it (can you tell ive never done this). I assume its because the file is to large. How can I post this?

You can either host it off-site (like yousendit or some such), or trim it down to below the file size limit indicated in the Additional Options section when posting.
Title: Re: bad right channel, h0ow do I duplicate right using Audacity???
Post by: mikesalvo on March 18, 2007, 03:24:40 PM
ugh, sorry for being a complete newb here. I have a yousendit account. How do I upload and share for free???
Title: Re: bad right channel, h0ow do I duplicate right using Audacity???
Post by: Brian Skalinder on March 18, 2007, 03:30:50 PM
Quote from: mikesalvo on March 18, 2007, 03:24:40 PM
ugh, sorry for being a complete newb here. I have a yousendit account. How do I upload and share for free???

Dunno...I've never used yousendit.  Maybe someone else can chime in...
Title: Re: bad right channel, h0ow do I duplicate right using Audacity???
Post by: Crumbo on March 18, 2007, 03:31:53 PM
try www.mediafire.com to upload

:)
Title: Re: bad right channel, h0ow do I duplicate right using Audacity???
Post by: mikesalvo on March 18, 2007, 03:52:37 PM
sweet Crumbo! thanks alot.

here is the link to the sample: http://www.mediafire.com/?2mmzymw3wmt

Im not hearing the delay as much now. take a listen ya'll. lemme know what you think. As soon as I figure this out, i will transfer and post show (Levon Helm Band 3/16/07 @ The Beacon-NYC). Like I said this is not an amazing recording, but from what im seeing (and what I hear about another persons batteries dying), this may be the only source. Anyone seen one?
Title: Re: bad right channel, h0ow do I duplicate right using Audacity???
Post by: Brian Skalinder on March 18, 2007, 04:36:28 PM
There isn't a time-delay across the two channels.  Not a huge level difference across channels, either (min: .15 dB, max 1.41 dB, Avg RMS .62 dB, Tot RMS .63 dB).  In checking out a quick frequency analysis, it does seem the R channel is significantly stronger, in some cases -much- stronger (6-12+ dB).  Perhaps this is the cause of the off sound?  I'm grasping, here, in over my head.  At any rate, I definitely can hear what you're talking about, it does sound a bit off.

Any chance L = up, R = down?  To my ears, R seems to have more, but less defined low end, a bit muddy, causing me to guess it's pointing down.
Title: Re: bad right channel, h0ow do I duplicate right using Audacity???
Post by: mikesalvo on March 18, 2007, 05:22:01 PM
other way around actually. L-Down R-Up. Any suggestions in what I should do here? I think I should pick a side and duplicate it. What do you think. And thanks so much for your time and input...
Title: Re: bad right channel, h0ow do I duplicate right using Audacity???
Post by: mikesalvo on March 19, 2007, 01:50:41 AM
bump. any suggestions on this one??? still trying to figure it out. Can I eliminate 1 channel in a track using Audacity, then duplicate it??
Title: Re: bad right channel, h0ow do I duplicate right using Audacity???
Post by: Brian Skalinder on March 19, 2007, 02:09:13 AM
Quote from: mikesalvo on March 19, 2007, 01:50:41 AM
Can I eliminate 1 channel in a track using Audacity, then duplicate it??

Not sure turning it into mono will yield optimal results, but yes - Audacity will do this:

Title: Re: bad right channel, h0ow do I duplicate right using Audacity???
Post by: mikesalvo on March 24, 2007, 03:49:57 PM
indeed it wasnt the answer. killed the sound of an already sub-par recording. thanks for the help though. +t
Title: Re: bad right channel, h0ow do I duplicate right using Audacity???
Post by: Brian Skalinder on March 24, 2007, 04:09:24 PM
Quote from: mikesalvo on March 24, 2007, 03:49:57 PM
indeed it wasnt the answer. killed the sound of an already sub-par recording.

It doesn't sound terrible as it is, just a bit funky.  Not surprised mono didn't sound better.  Maybe mixing channels a bit will help - say L ch = 75%L, 25%R and vice versa.  ???
Title: Re: bad right channel, h0ow do I duplicate right using Audacity???
Post by: mikesalvo on March 26, 2007, 01:21:38 AM
eh. I just went with it as it was. It seemed to sound best. Im gonna post it momentarily...Thanks again Bri...