Open Settings → Personalize Sound → Equalization to apply equalization. EQ
adjusts the balance of frequencies in the recording. You can import
a convolution filter as a .wav file or parametric filter settings as
a .txt file. PGGB also accepts .zip packages of convolution filters
for use without modification.
PGGB-EQ / 01
Enabling EQ and checking its status.
Open Settings → Personalize Sound → Equalization and turn on Equalization. Choose Convolution for a .wav or .zip filter, or Parametric for text-based settings. The sections below walk you through choosing and importing your filters.
After importing, check the Equalization icon in the footer. Its checked state shows whether EQ is enabled. Purple indicates an EQ issue; hover over the icon for details. Click the icon to open the EQ settings. Use the Equalization toggle in Settings to enable or disable EQ.
Current interface preview · select to enlarge
EQ applies during both offline remastering and live playback. In
PGGB-Live, enable Apply live changes to apply
changes to the current stream. Playback pauses briefly while the
settings are updated, then resumes from the same position.
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Use your own EQ filters.
PGGB applies filters you supply. Choose or create the correction for
your room or headphones, then import it into PGGB.
Digital room correction: Use measurement
software to create a correction filter for your listening room,
or have a specialist prepare one. Import the stereo filter in
.wav format. PGGB applies the filter; it does not perform the
room measurements.
Headphones: Choose one of these sources for
headphone EQ:
Import your existing headphone EQ filters if you already
have a set you prefer.
To use the
AutoEQ project, select your headphones and choose Equalizer APO
Parametric EQ as the export format. Download the .txt
file and import it into PGGB.
Alternatively, find your headphones in the
AutoEQ results
and import the 44.1 or 48 kHz minimum-phase .wav filter.
Choose either a parametric text file or a convolution
file for the correction you want to apply.
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Convolution EQ: import and processing options.
A convolution filter stores its response in an audio file. A parametric filter specifies frequency, gain and bandwidth. Both define the tonal change, so choose a correction suited to your room or headphones.
Convolution EQ from a .wav file: Press
Browse beside Convolution filter and select a mono or stereo
filter. PGGB derives new filters from the imported response for the
input rates it processes, rather than simply resampling the filter
file. A mono filter applies the same correction to both channels.
Enable Linear phase for linear-phase filters, or leave it
unchecked for minimum-phase filters.
Convolution EQ used as supplied:
To preserve the filters without modification, import a .zip file
containing .wav filters at all required sample rates. Use this route
when the supplied filter's timing or phase correction needs to be
retained.
Import Convolution EQ directly
1. Select Convolution.
With Equalization enabled, choose Convolution under Equalization type.
2. Import a convolution filter.
Use Browse beside Convolution filter to choose your filter file or a package of filters.
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Select Frequency Range.
The frequency-range controls apply when importing a single .wav
filter. They let you limit EQ to a selected range by setting its
start and end frequencies. Leave the defaults if the filter already
covers the range you want. These controls do not apply to .zip
packages used without modification.
Current interface preview · select to enlarge
PGGB-EQ / 05
Import parametric EQ directly.
Import a parametric EQ file from REW, Equalizer APO or AutoEq, or write a simple #pggb file yourself. The same formats work in Offline and Live.
These instructions describe the PGGB V9 beta.
One file for both channels, or a file for each.
Open Settings → Personalize Sound → Equalization, enable EQ and select Parametric.
Use Browse beside Left or shared parametric filter beside the left file field to choose your .txt file. You can also paste its full path or drop a REW, APO or #pggb.txt file directly onto the L or R field.
Leave the right field empty to use the left file for both channels. Add a right-channel file only when it needs a different correction.
Check the EQ status before listening. Apply any required preamp attenuation separately; Preamp: lines in imported files are ignored.
1. Select Parametric.
Enable Equalization, then choose Parametric under Equalization type.
2. Import your filters.
Use Browse beside Left or shared parametric filter for a left or shared file. Browse beside Right parametric filter is for a separate right-channel correction.
Choose the format you already have.
Keep a header on the first line. REW/APO-style files need a non-filter line before the first filter definition. REW’s export heading or APO’s Preamp: line fills that role. If you create a file yourself, add #parametric first, as shown below.
These are syntax examples, not corrections recommended for your system. Use filter values from your own measurements or headphone correction.
REW.
Export filter settings as text from Room EQ Wizard.
Filter Settings file
Filter 1: ON PK Fc 45 Hz Gain -4.5 dB Q 5
Loads four filters: two peaks, a low shelf and a high shelf. OFF rows and empty None slots are skipped.
See the complete example
Filter Settings file
Room EQ V5.31
Dated: 19-Sep-2026
Notes: example for the PGGB guide
Equaliser: Generic
Filter 1: ON PK Fc 45.00 Hz Gain -4.50 dB Q 5.000
Filter 2: ON PK Fc 120.0 Hz Gain -3.00 dB Q 2.500
Filter 3: ON LSC Fc 90.00 Hz Gain 2.00 dB Q 0.700
Filter 4: ON HSC Fc 9000 Hz Gain -1.50 dB Q 0.700
Filter 5: OFF PK Fc 800.0 Hz Gain -2.00 dB Q 1.000
Filter 6: ON None
Use numbered Filter lines from an Equalizer APO configuration.
Preamp: -4.6 dB
Filter 1: ON LSC Fc 105 Hz Gain 4.5 dB Q 0.70
Loads five filters. The Preamp line is ignored; account for the required attenuation separately in PGGB.
See the complete example
Preamp: -4.6 dB
Filter 1: ON LSC Fc 105 Hz Gain 4.5 dB Q 0.70
Filter 2: ON PK Fc 180 Hz Gain -2.4 dB Q 0.80
Filter 3: ON PK Fc 3200 Hz Gain 2.1 dB Q 1.60
Filter 4: ON PK Fc 6100 Hz Gain -3.2 dB Q 3.00
Filter 5: ON HSC Fc 10000 Hz Gain -2.0 dB Q 0.70
Unnumbered Filter lines are supported from 9.0.10. On older versions, use the numbered layout.
Preamp: -4.6 dB
Filter: ON PK Fc 180 Hz Gain -2.4 dB Q 0.80
Loads the same five filters as the APO example. The Preamp value is not applied.
See the complete example
Preamp: -4.6 dB
Filter: ON LSC Fc 105 Hz Gain 4.5 dB Q 0.70
Filter: ON PK Fc 180 Hz Gain -2.4 dB Q 0.80
Filter: ON PK Fc 3200 Hz Gain 2.1 dB Q 1.60
Filter: ON PK Fc 6100 Hz Gain -3.2 dB Q 3.00
Filter: ON HSC Fc 10000 Hz Gain -2.0 dB Q 0.70
Open a plain-text editor and start with a dummy header line, such as #parametric. Put your filter definitions on the following lines. The header is ignored; do not put a Filter definition on the first line.
#paramtric
Filter 1: ON PK Fc 63 Hz Gain -5 dB Q 4
Filter 2: ON LSC Fc 105 Hz Gain 2 dB Q 0.70
Filter 3: ON HSC Fc 8000 Hz Gain -2 dB Q 0.70
This example has a bell-shaped cut, a low-shelf boost and a high-shelf cut. Replace the values with your own settings, save as .txt, then import it in PGGB.
For the compact format instead, keep #pggb as the first line, followed by rows of frequency, gain and Q. Do not add a header before #pggb.
How to read a filter line.
Filter 1: ONEnabled filterPKPeaking filterFc 63 HzCenter frequencyGain -5 dBCut by 5 dBQ 4Width of the adjustment
Higher Q makes a peaking adjustment narrower. Always specify frequency and Q, and include Gain for peaking and shelf filters. PGGB V9 beta also accepts decimal commas: Gain -3,5 dB means −3.5 dB and Q 0,7 means Q 0.7. A comma followed by exactly three digits is treated as a thousands separator, so Fc 1,000 Hz means 1000 Hz.
Supported filters.
Code
Type
Default Q
PK
Peaking / bell
0.707
LS, LSQ, LSC
Low shelf
0.9
HS, HSQ, HSC
High shelf
0.9
LP, LPQ
Low-pass · 12 dB/octave
0.707
HP, HPQ
High-pass · 12 dB/octave
0.707
NO
Notch
0.707
These are second-order filters. Shelves use Q, not a slope value after the type. Band-pass and all-pass filters are not imported.
For low-pass, high-pass and notch filters, write frequency and Q without Gain:
#paramtric
Filter 1: ON HP Fc 30 Hz Q 0.707
Filter 2: ON LP Fc 18000 Hz Q 0.707
Filter 3: ON NO Fc 60 Hz Q 4
Save a file PGGB can read.
Use a lower-case .txt extension, saved as plain UTF-8 without BOM or ANSI. For #pggb on Mac, use Unix (LF) line endings.
Every Fc, Gain and Q must be followed by a value. For files you also use with older PGGB versions, write decimal points and no thousands separators.
Use Filter 1: or Filter:, followed by ON and a supported type. OFF lines are skipped.
Use Q rather than bandwidth in octaves. Write a nonzero gain for peaking and shelf filters; omit Gain for pass and notch filters.
In #pggb files, use only the header and rows of three numbers, without comments or comma-separated values.
Frequency limits and other import details
Files accept frequencies above 9 Hz and below 24,000 Hz. A low processing sample rate can impose a lower limit: filters at or above 45% of that rate are omitted. Staying at or below about 19.8 kHz covers a 44.1 kHz processing path.
REW/APO filter keywords are case-insensitive; spaces and tabs can separate values. Other lines, including Preamp, are ignored. A 0 dB filter is omitted. Low-pass, high-pass and notch lines should therefore not include Gain 0 dB.
The Linear phase option does not change the file format. Enter the gains supplied by your measurement software; PGGB handles the phase option internally.
If the EQ file does not load
PGGB identifies the line and problem, for example line 3: Gain is not a number or line 1: Q has no value. Correct that line, then import the file again and check the EQ status.
PGGB-Live keeps playing without EQ when the file cannot be read, and records the error in its log. Check that the correction is active before listening for its effect. If no filters load, also check the extension, encoding and first line against the examples above.
