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Gear / Technical Help => Ask The Tapers => Topic started by: Zaphod on October 25, 2006, 05:31:43 AM

Title: What is the cause of this? (Weird/distororted wavform pic & flac sample)
Post by: Zaphod on October 25, 2006, 05:31:43 AM
SSIA

(http://img.photobucket.com/albums/v327/Beeblebrox/wtf2006-10-24.jpg)
Title: Re: What is the cause of this? (Weird/distororted wavform pic)
Post by: Javier Cinakowski on October 25, 2006, 09:26:14 AM
Only you, my friend, know the situation in which this happened. 

Looks like someone was pissing with a cable and then hit the gian knob on the preamp. ....
Title: Re: What is the cause of this? (Weird/distororted wavform pic)
Post by: Zaphod on October 25, 2006, 11:49:32 AM
I was recording with the rig in my signature in a small bar with my cables taped to the floor running up on a shelf. The whole show seems to be fine until the very end here when the right channel gets all distorted then cuts out, and the left channel got distorted as well, but there wasn't any clipping. I've had a couple shows recently where this mysterious distortion shows up in the middle or towards the end of the wav file.

I ruled out a power issue with the pre by using different batteries, internal and external. I'm thinking it might be the line in or my R-09, but I don't know.  :-\

Edit: Here is a smaple: http://download.yousendit.com/1D44D23C3B292824 (http://download.yousendit.com/1D44D23C3B292824) I dithered it down from 24bit.
Title: Re: What is the cause of this? (Weird/distororted wavform pic & flac sample)
Post by: jcme262 on October 25, 2006, 08:32:43 PM
That sucks Alex. Sounds like Eric plugged right into your line in with his 1947 Gibson ES-150 and fried it  ;D  to bad cause the version of that song and ending sound killer. Looks like it's time to paste your left channel. Oh well
Title: Re: What is the cause of this? (Weird/distororted wavform pic & flac sample)
Post by: Zaphod on October 25, 2006, 08:55:18 PM
That sucks Alex. Sounds like Eric plugged right into your line in with his 1947 Gibson ES-150 and fried it  ;D  to bad cause the version of that song and ending sound killer. Looks like it's time to paste your left channel. Oh well

Yes indeed it was a smoking Ghost of Saint Patrick closer, man that show last night was incredible. Too bad the left channel is fried as well.

So this problem is very sporadic, I had a brief bit of distortion during the Mother Hips set, but the wavform looks fine.

Last night I changed my miniplug cable from the MP2 to the R-09 and I still got static. I guess I'll have to try and isolate the issue piece by piece.
Title: Re: What is the cause of this? (Weird/distororted wavform pic & flac sample)
Post by: tfs8271 on October 26, 2006, 12:35:07 AM
M
with my cables taped to the floor running up on a shelf.

Could you have a bad cable or connection?

Could you clarify this comment? It might help. +T for the problems
Title: Re: What is the cause of this? (Weird/distororted wavform pic & flac sample)
Post by: Zaphod on October 26, 2006, 04:41:28 PM
M
with my cables taped to the floor running up on a shelf.

Could you have a bad cable or connection?

Could you clarify this comment? It might help. +T for the problems

I had my cables running down my stand the I taped a section to the floor, and ran the remainder up a shelf where they were coiled and I set my gear bag on top of them.
Title: Re: What is the cause of this? (Weird/distororted wavform pic & flac sample)
Post by: tfs8271 on October 26, 2006, 04:45:59 PM
I was thinking you might have had the cables running along the floor where people could step & stand all over the cables.
Title: Re: What is the cause of this? (Weird/distororted wavform pic & flac sample)
Post by: Zaphod on October 26, 2006, 05:01:20 PM
I was thinking you might have had the cables running along the floor where people could step & stand all over the cables.

Nah it was pretty out of the way I made sure.
Title: Re: What is the cause of this? (Weird/distororted wavform pic & flac sample)
Post by: cleantone on October 26, 2006, 09:27:34 PM
I have seen simular things happen with battery powered mics running out of juice. So is there a chance that a battery was dying? Is this the last section recorded or did it come back to normal after this spot?
Title: Re: What is the cause of this? (Weird/distororted wavform pic & flac sample)
Post by: jeromejello on October 27, 2006, 12:25:55 AM
that is definately a wierd way for the signal to express itself. 

i have run into a couple of issues with my recordings when the mp-2 was starting to lose voltage from the internal rechargables, but it was a bit more sloping and affected the top and bottom of the wav symectrically.

+t for fussy gear
Title: Re: What is the cause of this? (Weird/distororted wavform pic & flac sample)
Post by: Zaphod on October 27, 2006, 12:38:11 AM
I have seen simular things happen with battery powered mics running out of juice. So is there a chance that a battery was dying? Is this the last section recorded or did it come back to normal after this spot?

This was the very last song of the set.

I put in fresh AAs at the beginning of the show.

I taped the same band last night and used fresh AAs as well and saw the battery light tunr red during the first song, right after the song I switched to the external betery and it ran fine for the whole show of 2h30m. Also  I listened to the set today and there is no static whatsoever. The funny thing is that I was using my external bettery the first two times it happend at different shows.
Title: Re: What is the cause of this? (Weird/distororted wavform pic & flac sample)
Post by: Zaphod on October 27, 2006, 12:39:12 AM
that is definately a wierd way for the signal to express itself. 

i have run into a couple of issues with my recordings when the mp-2 was starting to lose voltage from the internal rechargables, but it was a bit more sloping and affected the top and bottom of the wav symectrically.

+t for fussy gear

Indeed its strange, thanks and backatchya.
Title: Re: What is the cause of this? (Weird/distororted wavform pic & flac sample)
Post by: Zaphod on October 30, 2006, 05:46:25 PM
Bump...

Anyone else have ideas? Phantom circuit in the MP2?  ???

:hmmm: Maybe Sound Devices would have some insight....
Title: Re: What is the cause of this? (Weird/distororted wavform pic & flac sample)
Post by: tfs8271 on October 30, 2006, 08:34:21 PM
Sorry I haven't got back to you. I have no freakin idea. :o shocker