When measurement(s) is exported, as we seen, you have severals possibilities.
- Variant 1 Create initial EQ filter in REW and import it into rePhase as a starting point
- Variant 2 Go in rephase and start creating filter from scratch.
- Variant 3 Use the filter creation tools from the plugin and create filter using DRC-FIR.
For best results with Volumio and BruteFIR I recommend sampling rate of 96000 and 65536 filtersize/taps.
When doing EQ in rePhase try to follow these simple guidelines:
Avoid high Q corrections as much as you can.
Remember that dips are not as hearable as rises, so flatten the rise points but avoid to flatten dips unless they are deeper than app -8dB.
Avoid high gains as much as you can. Don't go over +18dB, even better if you can stay bellow +12dB.
There is an initial 6dB attenuation in BruteFIR. If your max filter is (for example) set to +16dB then set additional 10dB of attenuation in BruteFIR settings to avoid clipping.
Measure carefully! your correction will only be good as was your measurement. Repat measurements unless you have good correlation between MMM (RTA) and sweep measurements (make at least 5 of them and average them).
Remember that Room EQ is not an exact science, so may the Force be with you. ;)
Variant 1 : Creating initial EQ filter in REW
On the right side of EQ window under Equaliser choose
Under Target settings configure settings for your speakers.
Under Target settings press
Set target levelto have REW set the target level or configure it manually
Under Filter tasks hit
Match response to target.
EQ filtersbutton to get dialog for additional manual filter adjustment
Save filter settings to fileto save REW EQ filter (which will be imported into rePhasse
Save your work under File/Save All Measurement
Variant 2 : Using rePhase
Measurement/importfrom file to import REW measurement
Choose Ranges and adjust Amplitude to be from 0 dB to 70 dB (you should now have the same measurement graph as done in REW)
Under Paragraphic Gain EQ choose
import REW filter settingsto import REW parametric EQ filter
Configure following rePhase parameters: set taps to 65536, rate to 96000, filename to the name of of the filter and choose directory in which rephase will create filter
generateto generate and save FIR filter
Save your work under
Variant 3 : Using DRC-FIR tools from the plugin
Creating filter with automatic tools in the plugin is easy. You have too put the exported impluse from REW in the shared folder of Volumio.
From your Windows files explorer, access to it by typing
Then, go in
brutefirfilter/filter-sources and put your Wav file here.
Go in the plugin setting page and in filter creation section, choose the file as file to convert.
Choose a target curve. 2 samples are provided with the plugin.
This file define how the corrected curve should look like. You can create or adjust one of the sample given.
These files are placed in shared folder of Volumio under
Choose a config.
We advice to start with 'soft' and see how it behaves..
You can give a name for your filter, or leaave empty the field to re-use the ipmort name.
The plugin will add
samplerate+config+target-curves+.pcm to the name.
- So, if name is left the generated filter will be left-44.1kHz-soft-hk5.pcm
Sample rate is taken from the value set in the plugin.
Warning : Do not set above 96Khz
Create filter and wait until the page is refreshed. Do the the samee for both channels.