Brickwall filtering {high pass, low pass }

Discussion in 'Mixing and Mastering' started by Kick Radio, Sep 21, 2014.

  1. Kick Radio

    Kick Radio Newbie

    Joined:
    Jan 15, 2014
    Messages:
    2
    Likes Received:
    0
    i know its a noob question but i am a noob to mixing and mastering
    Whats the best brick-wall / digital eq that gives clean cuts like high-pass and low-pass
    i'v been using SSL duende channel strip but they replicate analog so its not a cut were i want it its more like an incremental cut till where want it
     
  2.  
  3. Catalyst

    Catalyst Audiosexual

    Joined:
    May 28, 2012
    Messages:
    5,702
    Likes Received:
    653
    FabFilter Pro Q 2 is good for the job as it's very surgical. Great eq. *yes*
     
  4. fuad

    fuad Kapellmeister

    Joined:
    Dec 17, 2012
    Messages:
    418
    Likes Received:
    74
    +100000 for Fabfilter, one of the best EQ's around
     
  5. junh1024

    junh1024 Rock Star

    Joined:
    Jul 28, 2011
    Messages:
    1,295
    Likes Received:
    368
    I'd like to say Izotope Ozone 5 EQ: Brickwall lopass/hipass has slightly sharper filters than ProQ2, from my preliminary tests.
     
  6. ArticStorm

    ArticStorm Moderator

    Joined:
    Jun 7, 2011
    Messages:
    3,960
    Likes Received:
    1,277
    Location:
    AudioSexPro
    ozone sharper? Q2 has 96dB HP/LP.
     
  7. junh1024

    junh1024 Rock Star

    Joined:
    Jul 28, 2011
    Messages:
    1,295
    Likes Received:
    368
    Yes.

    I know 96dB/O sounds like a lot, but since Octave=doubling in frequency, a 96dB/O Lopass @4K will only go to -96dB at (2x4K=) approx 8K.

    ProQ2 has a transition band of a few K @4K in 0L mode, same in LP mode.

    EQ5 has a transition band of 550hz @4K in Analog mode, 100hz in LP mode.

    ProQ2 0L

    [​IMG]

    EQ5 A

    [​IMG]

    ProQ2 LP
    [​IMG]


    EQ5 LP

    [​IMG]

    NB: In ProQ2, the filter dB scale is on the left, the audio dB scale is on the right. In EQ5, on the left is the audio dB scale, on the right is the filter dB scale.



    Anyway, with MOST EQs, even free ones and DAW builtin, by applying any lowpass or hipass, you should get a cleaner sound. Sharpness could play a small part, or a gentle shape could do well, or acceptable.
     
  8. Wow, who knew?
     
  9. transporter1333

    transporter1333 Member

    Joined:
    Oct 27, 2013
    Messages:
    242
    Likes Received:
    13
    Location:
    Brazil
    Nice post
    Interesting answers....
    :wink: :wink:
     
  10. fuad

    fuad Kapellmeister

    Joined:
    Dec 17, 2012
    Messages:
    418
    Likes Received:
    74
    @junh1024

    Excellent comparison and extremely useful advice. Thank you.

    Although having said that I do think the uses for brickwall filtering would be very limited and cause things to sound unnatural, but if you're looking for absolute sharpness, then there you it
     
  11. Catalyst

    Catalyst Audiosexual

    Joined:
    May 28, 2012
    Messages:
    5,702
    Likes Received:
    653
    That's what I was thinking, aren't gentle slopes more musical? We're talking sharp attenuation here.
     
  12. Baxter

    Baxter Audiosexual

    Joined:
    Jul 20, 2011
    Messages:
    3,074
    Likes Received:
    1,895
    Location:
    Sweden
    Christian Budde's Rubberfilter
    Steepest filter I know (384dB/oct). Freeware. Not to be automated/modulated.
    http://www.savioursofsoul.de/Christian/vst-plugins/eqs-filters/
    [​IMG]
     
  13. Guitarmaniac64

    Guitarmaniac64 Platinum Record

    Joined:
    Jun 5, 2011
    Messages:
    1,073
    Likes Received:
    176
    Wow that last picture looks more like a what a gate does than a passing filter use that curve or shall i call it cut? on a HP and it IS a gate.
     
  14. mild pump milk

    mild pump milk Russian Milk Drunkard

    Joined:
    Mar 29, 2014
    Messages:
    2,044
    Likes Received:
    1,596
    Location:
    Russia
    rs-met engineersfilter
    it's free
    it has a lot of filter types, etc.
    there is one filter type that cuts as flat as brickwall is. Like that -> |___
    High order (20), low ripple, high rejection
    type: elliptic

    I've never seen brickwallier filter than this one.
    If you're high-cutting at 1 kHz, there will be about 1030 Hz at -120 dB......
    But will be a lot of ringing (and it is a minimum phase only)
     
Loading...
Similar Threads - Brickwall filtering {high Forum Date
Brickwall filter at 20khz? Mixing and Mastering May 22, 2020
The cleanest brickwall limiter for mastering OSX Mixing and Mastering Jun 16, 2014
Non-harmonic dark bands: weird filtering or watermarks? Working with Sound Sep 16, 2017
Smooth Filter for Low-pass/Dynamic Filtering to Prevent Muffling Artifacts? Software Jul 10, 2017
My guitar Pre-Amp stage/filtering and STM32F4 Instruments Jan 11, 2017
Loading...