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Room correction guide

Hendrik Kirchhof

September 01, 2022 09:46

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Hi,

I'm new to HifiBerry OS and also new to room correction in general. I did some measurements using the HifiBerry measurement microphone. But I'm not sure what the white, red and green lines in the graph actually stand for. Is there any explanation anywhere?
The "bass only" correction sounds ok and seems to make sense. However the other corrections to my ears result in distorted and extremely flat sounds. I'd be happy to know if they are worth trying at all, since "bass only" is default anyway ...

Below are screenshots of my "bass only" and "weightened flat" corrections.

Thanks!

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6 comments

• 0
  
  HiFiBerry team September 02, 2022 09:50

  The correction looks good.
  However, your speaker (not the room) had way to much bass in the range between 50 and 300Hz (5-10db). This has been corrected now. This might sound "flat" to you now compared to what you are used to. But it's more correct. However, not everybody likes it that way. Feel free to add base again using the equalizer to the amount that you like. 
  There is no "right" sound. Especially if you're usually listen at low volume, feel free just to add more bass again. Play around with the equalizer to find a sound that you are comfortable with.

• 0
  
  Hendrik Kirchhof September 02, 2022 10:51

  Thank you! So the red line is my speaker? And then the green line is the correction that is done, resulting in the white line?
  It surprises me that the speaker has "way too much bass" - it's a Neumann KH 120 A studio monitor which should be pretty linear, as far as I know.

• 0
  
  HiFiBerry team September 02, 2022 10:53

  Yes, the red line if the measurement of your speaker. The KH120 has different settings for bass, maybe you choose the one with the most bass.

• 0
  
  Hendrik Kirchhof September 02, 2022 11:09

  Yes, it has - but the settings can only be used to reduce bass, not to add it. How do you come to the conclusion the speaker itself has too much bass and not the room?

  Edited by Hendrik Kirchhof September 02, 2022 11:09
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  HiFiBerry team September 02, 2022 11:13

  The room won't just add bass, you would also see dips, but the only I see here is at 50Hz.
  However, as you use the speaker anyway in your room, it doesn't really matter what's causing this. 

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  Hendrik Kirchhof September 02, 2022 11:36

  No, it doesn't, but I'm curious anyway :) Thanks for your explanations.