# Sample Analysis Please!

**URL:** <https://forum.audacityteam.org/t/sample-analysis-please/43057>\
**Category:** Audiobook Production\
**Created:** [July 27, 2016, 11:37pm UTC](https://forum.audacityteam.org/t/sample-analysis-please/43057 "2016-07-27T23:37:21Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![kozikowski](https://forum.audacityteam.org/letter_avatar_proxy/v4/letter/k/919ad9/32.png) [@kozikowski](https://forum.audacityteam.org/u/kozikowski)\
**Post date:** [July 28, 2016, 1:39am UTC](https://forum.audacityteam.org/t/sample-analysis-please/43057/2 "2016-07-28T01:39:07Z")

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You’re a lot closer than most people get. There is a stunning amount of sub-sonic noise. Earthquake/thunderstorm stuff. It responds nicely to Steve’s vocal filter.

This is my local copy.  
[http://www.kozco.com/tech/audacity/Documents/LF\_rolloff\_for\_speech.xml.zip](http://www.kozco.com/tech/audacity/Documents/LF_rolloff_for_speech.xml.zip)

Download and unzip it to LF\_rolloff\_for\_speech.xml. Install it in the Audacity Equalizer tool.

**Adding Audacity Equalization Curves  
– Select something on the timeline.  
– Effect \> Equalization \> Save/Manage Curves \> Import  
– Select LF\_rolloff\_for\_speech.xml \> OK. (it won’t open the ZIP. You have to decompress it)  
– LF rolloff for speech now appears in the equalization preset curve list.**

Then apply it.

LF Rolloff (rumble filter)  
– Select the whole clip or show by clicking just above MUTE.  
– Effect \> Equalization: LF Rolloff for speech, 5000 Length (approx) \> OK  
  
  
All I did was “roll off” all the rumble. I ran ACX-Check and it passes.  
 ![Screen Shot 2016-07-27 at 6.14.45 PM.png](https://forum.audacityteam.org/uploads/default/original/2X/6/6f362a496e5ed887fb4dea55c2843ae9734a4947.png)  
You can run ACX-Check, too. It’s a plugin that appears under Analyze.

[http://wiki.audacityteam.org/wiki/Nyquist\_Analyze\_Plug-ins#ACX\_Check](http://wiki.audacityteam.org/wiki/Nyquist_Analyze_Plug-ins#ACX_Check)

It automatically checks for the three sound qualities that ACX looks for when you submit your work.

[https://forum.audacityteam.org/t/measure-between-23db-and-18db-rms/32770/16](https://forum.audacityteam.org/t/measure-between-23db-and-18db-rms/32770/16)

Actually, the automated robot does that. If that passes, the work goes on to Human Quality Control.

Describe your studio.

Koz

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