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Acoustics & EQ?

  • 27-10-2009 3:48pm
    #1
    TelePaul
    Registered Users, Registered Users 2 Posts: 4,093 ✭✭✭


    How does this sound to you guys:

    Your average LDC will have a min. frequency response of 20Hz.
    A low 'E' guitar string, played open and tuned to concert pitch has a frequency of about 82Hz.

    So logically, before I even listen to what I've tracked, I should roll off everything below 82Hz as it's just recording frequencies my guitar is incapable fo making.

    What do we think?


Comments

  • #2
    PaulBrewer
    Registered Users, Registered Users 2 Posts: 7,790 ✭✭✭PaulBrewer


    Yup , however there could be lower frequencies that are the initial 'thud' or 'attack' of the note that may or may not be desirable.

    However as a rule of thumb you'd be ok to do that.

    A Low Cut filter is usually at 80 or 100 Hz and is for doing just that.


  • #3
    TelePaul
    Registered Users, Registered Users 2 Posts: 4,093 ✭✭✭TelePaul


    PaulBrewer wrote: »
    Yup , however there could be lower frequencies that are the initial 'thud' or 'attack' of the note that may or not be desirable.

    However as a rule of thumb you'd be ok to do that.

    A Low Cut filter is usually at 80 or 100 Hz and is for doing just that.

    Awesome. Take that conservatory reflections!


  • #4
    ogy
    Registered Users, Registered Users 2 Posts: 616 ✭✭✭ogy


    i start with a high pass filter on every track in a mix at 100hz, except for kick drum and bass guitar which i'd high pass at 30hz. then as i go through each track i move the filter up or down to taste. the higher i can high pass a track (without sacrificing the sound) the less mud i get in the full mix i find.


  • #5
    madtheory
    Registered Users, Registered Users 2 Posts: 1,892 ✭✭✭madtheory


    Yes, generally "bracketing" the spectrum of each instrument is a good idea. Just be sure to do an a/B test listen, some filters have unpleasant artifacts well above or below the cutoff frequency, such as phasing and/ or ringing.

    A spectrum analyzer is very educational. The only free one I know of is the RNDigital Inspector, but they're offline at the mo. If you're on a PC with a VST compatible host, there are several free ones available.


  • #6
    kfoltman
    Closed Accounts Posts: 252 ✭✭kfoltman


    madtheory wrote: »
    A spectrum analyzer is very educational. The only free one I know of is the RNDigital Inspector, but they're offline at the mo. If you're on a PC with a VST compatible host, there are several free ones available.

    I use this one (PC VST): http://www.meldaproduction.com/freevstplugins/manalyzer.php


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  • #7
    TelePaul
    Registered Users, Registered Users 2 Posts: 4,093 ✭✭✭TelePaul


    madtheory wrote: »
    Yes, generally "bracketing" the spectrum of each instrument is a good idea. Just be sure to do an a/B test listen, some filters have unpleasant artifacts well above or below the cutoff frequency, such as phasing and/ or ringing.

    A spectrum analyzer is very educational. The only free one I know of is the RNDigital Inspector, but they're offline at the mo. If you're on a PC with a VST compatible host, there are several free ones available.

    Thanks for that. I have Voxengos SPAN - mostly used for 'proving' to my friend that his mixes are too muddy :)


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