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Thread: My Shure SM58 sounds worse than my Samsung Galaxy S7 Mic... Fix?

  1. #21
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    Quote Originally Posted by Bobbsy View Post
    I have to say that, although it takes experimentation, my money would be on the noise being caused by the MXL getting noisy when cranked up to handled a low output dynamic. I'd see if I could borrow some other gear and experiment before running off and buying a new mic to use with the MXL.
    +1 Sounds like normal white noise to me and a very common problem with dynamic mics. FYI, the Galaxy probably has some form of (quite sophisticated, digital) noise gating in it.

    As ever, a decent Audio Interface should solve the problem (be back with that inamo') I had an Alesis i02 Express that was pretty good with a '57.

    Dave.

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    Would you advise buying another mic instead of a preamp to fix this issue?

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    Shown are the mic pre noises (L&R) for the KA6 at max gain, open circuit XLR (worse case) and a 320M HQ MP3 of the sound.

    With a 57 you need to be within 50mm of the grill to get -20dBFS on speech, any kind of singing would NOT need full gain and the (already bloody good!) noise figures would be better.

    Has to be said though, 'horses for courses'. If speech is your prime interest a capacitor (aka and archaic name 'condenser') is favourite but you need a very quiet space and even then you will do a lot of editing and re-takes.

    Attachments...WTF!?! You should not DO these things to us old farts! Ok, I suppose the coming of W10 and Edge makes upgrades necessary but BEFORE I have had me brekky and heart meds???!

    Dave.
    Attached Thumbnails Attached Thumbnails ka-6-noise-meter-jpg  
    Attached Files Attached Files

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    Quote Originally Posted by ecc83 View Post
    Shown are the mic pre noises (L&R) for the KA6 at max gain, open circuit XLR (worse case) and a 320M HQ MP3 of the sound.

    With a 57 you need to be within 50mm of the grill to get -20dBFS on speech, any kind of singing would NOT need full gain and the (already bloody good!) noise figures would be better.

    Has to be said though, 'horses for courses'. If speech is your prime interest a capacitor (aka and archaic name 'condenser') is favourite but you need a very quiet space and even then you will do a lot of editing and re-takes.

    Attachments...WTF!?! You should not DO these things to us old farts! Ok, I suppose the coming of W10 and Edge makes upgrades necessary but BEFORE I have had me brekky and heart meds???!

    Dave.
    Sorry, I do not fully understand your post, but are you basically echoing what others have said, and that my experience is normal, and perhaps not bad?

    I use this mic for singing. There is a huge improvement from 4 to 2 inches

    Thank you to the people who replied in this topic. You were of much help.

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    "Sorry, I do not fully understand your post, " I have posted an MP3 clip of the 'noise floor' of my Native Instruments KA6 interface. That is how it should be done! All other cobbled together mic recording systems into a computer are pretty much doomed to poor results, especially with a low output dynamic.

    You need to grasp some basic, electronic/audio concepts: Mics turn sound pressure (usually) waves into very wee electrical signals. The Shure dynamics typically produce about 2millivolts (2/1000!) for a sound level of 90dB SPL (Google some of this!). Speech is typically 70-75dB SPL* and so the voltage will be closer to 0.7mV or 700 MICRO volts!

    Now, ALL electronic circuits, amplifiers, produce noise (G again! 'White noise') HOW much noise depends upon the quality of the pre amplifier's build. The KA6 has very good pre amps. Pay $1000 for a Grace M101 and you will do a bit better (in fact the noise won't be THAT much lower but you would get more gain** for same noise level)

    *Mic sensitivity specifications USED to be based on 75dB SPL but 93dB (one Pascal) makes the adpuff LOOK better!

    **Gain is the amplification factor that an amplifier provides. You typically want a number for an AI (or mixer) of 60dB (X1000) The KA6 is a bit under that but the very low noise floor means it copes fine. (actually, 'gain' figures for AIs are not that helpful IMHO but that is a subtle argument for another T&P!

    'Noise': Best to learn some common terms? A steady, tuneless hiss, interstation FM noise IS a 'hiss' and is electronic white noise. Hum is a mains power intrusion, can be 50 or 60Hz depending on locale. Can be 100Hz or 120Hz for other reasons and harmonics can go into ultrasonics.
    'Buzz' is a hum with extra, gritty harmonics, often associated with digital kit (G 'zipper noise') . 'Static' is an Americanism that seems to be attached to ANY unwanted noise. It derives from radio atmospheric noises. Actually an oxymoron, electrons have to MOVE to make a noise!

    Dave.

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    A MIC doesn't produce any sound, which is the S in SPL. One would have to send it a signal to measure SPL. Static is a discharge : ) hahaha

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    The guys are all more or less giving you the same info.

    On a scale of will hiss to wont hiss....

    Dynamic (low sensitivity microphone) into low gain/low quality preamp - Preamp hiss is audible and the mic requires gain to be pegged.
    Condenser (high sensitivity microphone) into low gain/low quality preamp - The hiss is the same, but your source signal is louder relative to it; cloudlifter supposedly does the same job.
    Dynamic (low S microphone) into high gain/high quality preamp - The preamps will probably be less noise, but you'll still need to ride the gain high and take the risk.
    Condenser microphone into high gain/high quality preamp - Low noise+high output mic, with high gain, low noise preamp.


    I compared four dynamic mics through four high quality preamps yesterday and hear zero white noise/hiss at normal working levels.
    I had the preamp gain maxed on two of the preamps.
    Quote Originally Posted by Grawlf View Post
    That's a tad too much terminology. What do you mean by 'mix'?
    Quote Originally Posted by Steenamaroo View Post
    No VST can emulate that smell.

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    .."I had the preamp gain maxed on two of the preamps".

    A "recording amp" needs to do that - supply a clean signal to 0-VU, or, whatever spec one makes for any rig.

    As it is the "only" amp (often) going in to our Digital tape recorder, the interface should have recording amp characteristics. But I guess NOT : )

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    Quote Originally Posted by hyrdbil View Post
    I use this mic for singing. There is a huge improvement from 4 to 2 inches
    Try it at half an inch, or even with your lips brushing the grill, at least for the times you're singing softly. Then back off 4-12" when belting out.

  10. #30
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    I suppose there are those who never watch anyone sing into a MIC : ) ^There are so many moves. hahah

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