Loud Booms!
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Posted on Apr 23, 2008 10:30 pm
Cliffriff
Member Since: May 10, 2007
Hey guys my air conditon ( or something) have made these really low booms on my recording. Forty Mile noticed thema s did I. They are extremely low and forty guessed them at 20,000-50,0009(khz?) so can someone tell me how i would get rid of JUST this low boom and not lose any bass? Its just 3 acoustic guitars, vocals, and a tambourine.. no bass guitar. forty was guessing that i could just put a "pass" filter on that wouldn't let a any sound above/below a certain frequency to come through. how would i do this exactly? if someone could give me step by step that be great!!
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Apr 23, 2008 10:37 pm no, 20 to 60 hz. very low. could be as high as 80.
in the cubase mixer (f3) look at the eq knobs. there's a little black field next to them near the bottom of the EQ strip. choose 'high pass.' then move the EQ dial to the left while the track is playing until you hear the boom vanish. i predict this will happen somewhere below 80 hertz, and it sounded about 60 to me, actually. you could even set up a loop so that cubase plays just the section with the boom while you work on this. to do that drag the triangle-line thing, you know the thing that sets the start and end points at the top of the play window, so that it starts a few seconds before the boom end ends right after. then make sure the 'loop' thing is turned on on the normal play/stop/record bar thingy. then position the cursor before your loop points and hit play, and it'll start looping by the end of the selected area.
Apr 23, 2008 10:42 pm actually, you turn the RING that surrounds the actual EQ knob. that sets the target frequency. just make sure you chose 'high pass' and what you're doing when you move the ring to the left is setting the 'floor' above which sound will pass. the highs will pass. below the frequency you set, no sound will pass. that's why its called a high pass.
there's low pass too, fyi. this is just a way to use the equalizer.
WaltChief Cook and Bottle WasherMember
Since: May 10, 2002
Apr 23, 2008 11:07 pm Good luck. I get it from the boomermobiles in the hood. Nutin like an acoustic guitar piece flavored with car farts and rattling teath.
Apr 23, 2008 11:09 pm Stop it, Walt. You're killing me over here.
WaltChief Cook and Bottle WasherMember
Since: May 10, 2002
Apr 23, 2008 11:13 pm Ooops.... Sorry Herb. It would seem that in my old age I am developing a sence of opinion :)
Apr 23, 2008 11:16 pm Recently seen in the trunk of a nameless SUV.
WaltChief Cook and Bottle WasherMember
Since: May 10, 2002
Apr 24, 2008 12:09 am Yea that's the one! An 07 pink and green exploder with those nonstop wheel covers! The engine is just there to charge the batteries and the thing kinda leaps along to the music. Must be a ***** to stop, having to spin that speaker around and all that.
Imagine trying to talk in one of those. It would sound like psycho Fat Albert.... Turnbababa left right herebababababababa.
Dematrixhttp://www.reverbnation.com/2ndgMember
Since: Nov 27, 2007
Apr 24, 2008 07:32 pm so thats the guy sitting in my cab making my playing sounds all carpy!
with the booming, dunno if this will work but it should. try zooming right in on the area where the boom is and try to fix it. select ya pencil tool and where you can see a spike in the waveform just bring it back down by clickn and draggin it. let me know how it goes.
Apr 24, 2008 11:17 pm can i get someone to comment on shelving please? im not sure if i gave the right advice.
another thing you can do, cliffriff, is to get a tool that will show you the waveform visually. you will be able to see the frequency the booms are at
Apr 25, 2008 03:15 am the boom's peak is at 42 hertz, i just discovered, btw. in a song that's just singing and acoustic guitar.
notch filter or low shelf?
Apr 25, 2008 03:17 am also why would cliff not be able to hear this in A. ipod earbuds and B. high quality flat monitors with the subwoofer cranked up?
i heard the booms in sony earbuds. but ipod earbuds are rated at 20 hertz to 20 khz. can a bud's power output have anything to do with the amount of bass it can push, or something? magnet quality or something?
WaltChief Cook and Bottle WasherMember
Since: May 10, 2002
Apr 25, 2008 08:28 am It's not that easy forty. The peak you see could be the prime frequency or a resonation. To accurately measure the aberent signal in terms of frequency and amplitude you would have to isolate that signal. Everything advised here is good advice. Now it's just try it and see if you can make it work. Sweeping the lower end with a notch is great if it will work. It may not address the full frequency spectrum of the aberent noise. Using a shelf, or dampening the signal under a certain frequency may also work but also may leave the rest of the trak sounding like tin, as both vox and guitar have harmonics/sub-harmonics that retain some amplitude in those low frequency ranges. Deon's re-draw concept is sound in theory. It is a difficult task for me. I wavelab using the spectral editor you can replace sections with like sections minus the aberent noise if the sections are very short in duration. Multiband compression or frequency sensitive compression can also be used as another form of "eq" so to speak.
As to why you heard it and CliffRiff did not.... who knows. The recordings of the boomermobiles in the background of my tracks are a very faithfull recording. It is almost impossible to hear if they are comming from the speakers or outside. Like memorex. My ears don't always recgonize bass dependent upon how fatigued or conditioned they are from other bass listening.
WaltChief Cook and Bottle WasherMember
Since: May 10, 2002
Apr 25, 2008 08:29 am Damn, it's contagious. Now I'm writing essays.
Dematrixhttp://www.reverbnation.com/2ndgMember
Since: Nov 27, 2007
Apr 25, 2008 09:41 am thats a good point you make there Walt about the re-draw theory, if the boom is too long in duration, using that method it could be very hard to fix.
is it possible to copy the same part of the riff played previously in the song and then pasting it in where the boomy part used to be, and then join it properly with pencil tool?
that could be a goer.
Or why not just drop in and record it again?
could also just set up a new track, record that bit again then paste it in the right spot wid a cross fade.
as for the earplug thing, it sounds like a resonance thing to me...tis why on the bigger speakers you cant hear it, they can take it. but using the plugs they cant take the kinda resonance thats going thru it, what ever it is.
if ya listen to early Metallica stuff with the plugs it will do the same thing in spots, especially songs off "and justice for all"
even on normal speakers you can hear them battling. some sort of frequency.
sounds fat though.
Apr 25, 2008 09:44 am haha.
well the shelf and the notch both worked. thought i detected a little missing bass with the shelf but not really with the notch. i'm confused becayse i would assume the highest peak down there would be the fundamental of the boom. i set the notch right to that, with a very narrow q and it vanished.
is deon saying you can use a pencil tool to modify an actual waveform? i did not know you could do that. is that true?
WaltChief Cook and Bottle WasherMember
Since: May 10, 2002
Apr 25, 2008 10:31 am Yes he is and yes you can, at least in Cubase. I've not had much luck with it myself. Sounds like a doodle when I'm done, but I'm sure there are those that could do it.
Dematrixhttp://www.reverbnation.com/2ndgMember
Since: Nov 27, 2007
Apr 25, 2008 08:08 pm i've done it just to see if it was possible and it is, i didnt listen to it after though....best i go give it a try and i'll be ack shortly.
oh yeah, forty, i remember your thread about needing a stack for a band, i gave into my old ways and just yesterday bought a 6505 120watt head and a Ibanez thermion quad box.
nuff said.
except, going for a jam today, cant wait to thrash it a little.
Noize2uCzar of MidiAdministrator
Since: Apr 04, 2002
Apr 25, 2008 10:13 pm Yes, in Sonar as well. In fact Sonar now has several different pencil tools like that with different functions. I use them a lot when creating or fixing things.
And very nice subwoofer. I found a couple of turntable similar to one of my old platters on that site as well.
