Topic: What causes Diginoise and can it be fixed?

[phishmarisol]

The show I taped last night sounds good except for about 5 minutes I have found where there are very noticeable crackles throughout.  I did get new cables recently, but have taped other shows with them and had no sounds like this.  I have only taped at one venue, using the same basic setup each time.  Just wondering what causes this and how to fix it if it is possible.  I put the file in Soundforge and zoomed in but there is no noticeable change in the wav when the sounds occur.  I also tried to use CEP's and Goldwave's Pop/Click eliminators but they didn't work and made the recording sound like crap.

[dmonterisi]

was there any jostling of your gear?  i had that happen with certain coax cables when i had the minime.  if the bag shifted, i'd get diginoise, but only with a certain cable and not others.

[phishmarisol]

Nah.  I am just going SBD > JB3.  I was beside the unit the whole tonight and it was secure on a table against a wall.  No one even came close to it and I didn't even touch it during the recording process.

[nickgregory]

another thing that can cause it is sometimes it can be a sign that it is time to send the deck off for cleaning.

[mgleason007]

another thing that can cause it is sometimes it can be a sign that it is time to send the deck off for cleaning.

Yeah but he's using a JB3, which is odd.

[sickrick43]

If he was using an a/d, it could be a number of things.  Also, could be the mix itself.  Most soundboards when you peak a channel or group will crackle when it clips.  If it's something that's not heavy in the mix, you won't notice in the stacks, as it's buried in the SPL of everything else.  Very common to hear it in the tape, but not in the mains.  He could also be clipping in the JB3, or any number of things.

My JB3, which is normally pretty stable with the V3->C02, was clicking all afternoon yesterday.  Only thing different was a new RS/Monster (they use the same packaging) Premium TOSLINK cable.  I'm shitcanning the C02 & getting a HOSA 312 this week.

Rick

[nickgregory]

another thing that can cause it is sometimes it can be a sign that it is time to send the deck off for cleaning.

Yeah but he's using a JB3, which is odd.

my apologies, didnt see that....

[phishmarisol]

Well I am not using an a/d.  Just straight sbd > analog cables > jb3.  Makes sense about it being in the mix.  I checked the levels religiously and saw no clipping.  There was another unit being run off the board so I might get that copy sometime and see if it suffers from the same problem.  Actually I know I can talk to someone who will have that copy...might straighten out some issues.

[plucks]

If you were using only a JB3, most likely it had to do with the gain stage or AD converter in your JB3 being overloaded.  I dont think that what you hear was typical diginoise found on DAT recordings.  Most likely this was caused by your JB3 not being able to handle the level of incoming signal.  
Even though you saw no visible peaks, you probably had some brickwalling.  
Did your levels ever get above a certain dB or seem to stop at a certain dB?

phil

[phishmarisol]

The highest I saw them get was almost right at the line of going in the red.  However, I have ran other tests where I purposely made the signal go much higher than it should and then listened back and it sounded fine.  If anyone wants to take a listen and tell me what they think I can shoot them an email.

[Brian Skalinder]

Only thing different was a new RS/Monster (they use the same packaging) Premium TOSLINK cable.  I'm shitcanning the C02 & getting a HOSA 312 this week.

I think you'll like the -312, Rick, though it doesn't have the pass-through like I think the CO2 does.  For tried-and-true optical cables, I've used both the SoundProfessionals one with built-in right-angle toslink/mini connectors, as well as the SonicWave with a right-angle toslink/mini converter.  Links in the Archival Info forum if you're interested.

[dmonterisi]

The highest I saw them get was almost right at the line of going in the red.  However, I have ran other tests where I purposely made the signal go much higher than it should and then listened back and it sounded fine.  If anyone wants to take a listen and tell me what they think I can shoot them an email.

i think what phil is trying to describe is brickwalling, rather than overs.  bricking the pre can cause a muted clipping sound, even though your levels do not appear over.  the signal coming in is too hot.  try using attenuators next time you patch the jb3 from a board and i bet you are fine.

[F.O.Bean]

The highest I saw them get was almost right at the line of going in the red.  However, I have ran other tests where I purposely made the signal go much higher than it should and then listened back and it sounded fine.  If anyone wants to take a listen and tell me what they think I can shoot them an email.

i think what phil is trying to describe is brickwalling, rather than overs.  bricking the pre can cause a muted clipping sound, even though your levels do not appear over.  the signal coming in is too hot.  try using attenuators next time you patch the jb3 from a board and i bet you are fine.

good point damno, another thing is, even tho you ahve only patched outta SBD's, they are ALL diff, none are the same and they are run diff, even if you were in the same venue each time, the SBD tapes dont sound the same, some too hot, but most of my SBD experiences have been too low

[phishmarisol]

attenuators???

[F.O.Bean]

attenuators???

audio technica and shure make them i believe!!!

it will cut down on your signal by -10, -20, -30 DB

[phishmarisol]

Hmm...not sure what I need.  Before this show I had only taped guitar players there and used between +6db and +12db.  During this show I was at -1db the whole time but the levels looked ok.  And when I put them in Soundforge they look just like any others I have seen...

[F.O.Bean]

Hmm...not sure what I need.  Before this show I had only taped guitar players there and used between +6db and +12db.  During this show I was at -1db the whole time but the levels looked ok.  And when I put them in Soundforge they look just like any others I have seen...

id say it was board issue then!!

id get the other boards floating around and compare, or ask em if theres ANY digi-noise in their recording