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Thread: Weird noises when recording

  1. #11
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    Quote Originally Posted by keith.rogers View Post
    Is the UM2 16-bit only? Online specs seem to only state sample rate.

    I hear a lot of noise too.
    Yeah keith.rogers. UM2 is sold as 24bit, but it's misleading fake advertisement! It's only 16bit. Lot of noise indeed! Noisy day at my noisy place though.

  2. #12
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    It likely the the guitar then. The C1 in spec has the ability to pick up the bottom end of the guitar to 40hz. But a $70 guitar is , well, a $70 guitar. Sometimes one can find one that sounds great, most times not so much.

    But, your playing seems solid so you have that going for you. If you indeed used the C1 at the bridge and there is no low end, then I suspect the guitar or an inadvertent placement of a HPF on the track. I would double check that first.

    We will be around man. Keep posting your recordings.

    I am always here to help if I can.
    PC Win7-64-24G i7-4790k/Cubase 9 Pro 64-bit/2-Steinberg UR824's/ADAM A7x/Event TR8/SS Trigger Plat Deluxe/Melodyne 4 Studio/Other things that don't mean anything if a client shows up not knowing what it wants.

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  4. #13
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    When I record acoustic, I always start with the mic straight out from the neck joint (or about the 12th-14th fret), angled toward the upper bout and soundhole. You can increase or reduce the bass (or woofiness, if it mics up that way) by adjusting the angle and distance from the guitar. This is not the only way to record, of course, or the only way I've recorded, but it usually turns out pretty good if I spend time getting it right. Having 2 mics does make it less critical where each one is, since you can mix them to achieve the sound you want. I use a pair of SDCs usually in those cases.

    Bass is going to improve as you capture more of the entire top, and to some degree (depending on the guitar and mic) soundhole. It's always some learning, with the guitar being a big variable, as well as your playing style. If you play softly, you won't really move a lot of air, and you'll have to mic closer to optimize s/n, but then you'll lose some bass and pick up more mechanical noises from your playing. Softer playing really requires a responsive guitar, a good mic, and a good room.

    So, work on mic placement and don't mess with the mixing until you've really optimized the recording part. It's less important in a big mix, but solo or guitar+voice, it needs to be as good as possible.

    The 16-bit limit is working against you, too.
    "... I know in the mornin' that it's gonna be good
    when I stick out my elbows and they don't bump wood." - Bill Kirchen

  5. #14
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    I'm not hearing any of the phase/other issues you describe in the OP.
    Mike B My new album on CD Baby: Fact and Fiction
    My Bandcamp site: http://mikebirchmusic.bandcamp.com

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    Quote Originally Posted by mjbphotos View Post
    I'm not hearing any of the phase/other issues you describe in the OP.
    Really mate? Well, earlier I suspected that my headphones/speakers are somehow enriching those noises, especially between 200 and 500hz.

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    So, quick update!

    I've tried again, with a better acoustics and another mic placement. I'm attaching two files: first one with no EQ at all, second with some Noise Gate, EQ and compression. I still had to do a lot of cuts, but at least I think it sound a bit better. See what you think:

    test2.mp3

    test2EQ.mp3

    Just to let you know how I EQ this one:

    - I've add a noise gate at -40db.
    - I've used ReaEQ to insert HPF at 80Hz and LPF at 20kHz.
    - I've cut: 226.7Hz (-3dB); 390.8Hz (-7dB); 505.5Hz (-7dB); 700Hz (-7dB); 1063.9Hz (-5dB); 1570.4Hz (-5dB); 2981.7Hz (-5dB); 8083.9Hz (-3dB).
    - I compressed really smoothly: threshold -30.1dB, attack 150ms, release 70ms, ratio 4:1, output +8.
    - Then I've used another EQ (TDR Nova by Tokyo Dawn Labs) to boost 2dB at 450Hz, to cut some more at 700Hz (-2dB) and to boost 1dB at 3.5kHz and 1.5dB at 12kHz.

    As I told you before, I'm new on mixing, so I might had made some pretty weird things!

    Looking forward for your opinions!

    Cheers mates!

  8. #17
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    That's a lot of EQ manipulation.

    I guess I'd want to hear this guitar in a mix, i.e., what's the final piece you're working on? For me, those kinds of "surgical" cuts are something I'd defer until I knew what else was going on around it. This is (I assume) not a solo guitar work, so how it sounds alone is not so relevant. Of course, HPF and LPF are things I probably apply fairly blindly to a rhythm guitar track (well, almost any track) and if it's a guitar I know that will be used with any other instruments I'll have a low shelf ready, and if my croaking is present, there will be a fairly broad EQ down low ready for use. But, not all of those things going on.

    So, to me it sounds like you've squashed it a bit much and taken some of the sparkle out of the performance. Just because you see something peaking in a track doesn't mean it immediately needs to be knocked down. Wait until you've got more of the song together and then listen to the whole.

    And, finally, ALWAYS compare before and after at the same loudness level to see whether what you have done is really an improvement, or just louder, which will sound like an improvement 90% of the time, but that's your ears/brain fooling you. I mean, it might be better, but you can't be sure until you eliminate the loudness bias.

    Here are your 2 MP3s with a limiter that I applied to push them to ~-14dBLUFS, and then the original with just the kind of EQs I might start with, and compression, with the same limiting. Now, a lot of folks would find the guitar needing something, but they say that about my guitar playing too ... You have to decide what your sound is, and how it will be used before you hack away mercilessly. You might cut out something that's actually worth keeping.
    test2-lim.mp3
    test2EQ-lim.mp3
    test2kr.mp3

    P.S. I'm working on my old laptop with ancient MDR-V6 cans - son has reclaimed his bedroom for his Christmas visit, and all my stuff is powered down. No idea what this really sounds like

    P.P.S. Some of that "resonance" I've seen mentioned is, to me, as much technique as the guitar itself.
    "... I know in the mornin' that it's gonna be good
    when I stick out my elbows and they don't bump wood." - Bill Kirchen

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    Yeah, what is the final goal for this? Meaning are you going just acoustic and vocal? Or adding bass guitar and drum as well?

    Doing two tracks of the acoustic will help if you are looking for a bigger sound. There are many options depending on what you are looking towards for final production.
    PC Win7-64-24G i7-4790k/Cubase 9 Pro 64-bit/2-Steinberg UR824's/ADAM A7x/Event TR8/SS Trigger Plat Deluxe/Melodyne 4 Studio/Other things that don't mean anything if a client shows up not knowing what it wants.

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  11. #19
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    Quote Originally Posted by jimmys69 View Post
    Looks like you have a HPF on the track. I have nothing showing below 100hz. A recorded track of acoustic should have that.
    Yes, guitar does go own to 80 Hz and there should be some "chunk" below even that. Of more concern* is the cliff edge at 8kHz. That could be the result of the MP3 smash (I like an attachment of the best 320k MP3 you can do) but if in the original you have lost all the "air".

    But, I actually agree with Jim, not really a lot wrong with the basic sound. 16 bits should not really add too much noise, CD noise floor anyway, but many cheap 16 bit converters need Windows setting up properly for them. You need to make sure to have the record gain very low.

    Dave.
    Attached Thumbnails Attached Thumbnails lous-git-png  

  12. #20
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    Regarding the frequencies in the recording, the guitar's low E string stops at 82Hz (E2) so maybe over-agressive HPF; but beyond that, this sounds like a guitar with a capo on the 3rd fret (playing Am-C "open" chords), so I'd not expect much low frequency now that it's stopped around 98Hz (G2)!
    "... I know in the mornin' that it's gonna be good
    when I stick out my elbows and they don't bump wood." - Bill Kirchen

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