OMADE-TL EQ-C User manual

Congratulations on finding EQ-C! Because you have put the hand on a master
piece of art! With it, you can correct the sound of your audio system with a high
grade quality using F R filters, including linear phase equalizer and phase
corrections! To be convinced, try it, free trial available on our website
https://omade-tl.com/software_eq-c.html under the Support tab, where you will
find video demonstrations on how to use it, also there is a lot of information in
this manual, you can trust us, you will enjoy using EQ-C!
TABLE OF CONTENTS
1 PRE-REQUISTS................................................................................................................................................................1
1.1 PRODUCT COMPATIBILITIES.................................................................................................................................1
1.2 MINIMUM REQUIREMENTS....................................................................................................................................1
1.3 SPECIFICATIONS.....................................................................................................................................................1
1.4 DEFINITIONS............................................................................................................................................................1
2 SETUP...............................................................................................................................................................................2
2.1 INSTALL...................................................................................................................................................................2
2.1.1 For Mac:...........................................................................................................................................................2
2.1.2 For Wi dows:...................................................................................................................................................2
2.2 UNINSTALL..............................................................................................................................................................2
2.2.1 For Mac:...........................................................................................................................................................2
2.2.2 For Wi dows:...................................................................................................................................................2
3 PRODUCT.........................................................................................................................................................................2
3.1 OVERVIEW...............................................................................................................................................................2
3.2 DESCRIPTION..........................................................................................................................................................3
3.2.1 INTERFACE.....................................................................................................................................................3
3.2.2 FUNCTIONS....................................................................................................................................................3
3.2.3 KEYBOARD SHORTCUTS...............................................................................................................................3
3.3 GENERALITIES.........................................................................................................................................................4
3.4 LOADING THE AUDIO CORRECTION FILES ..........................................................................................................4
3.5 SAVING THE AUDIO CORRECTION FILES..............................................................................................................4
3.6 CUSTOM AUDIO CORRECTION FILES...................................................................................................................4
3.7 INSTALLING THE AUDIO CORRECTION FILES......................................................................................................4
3.8 KNOWN ISSUES......................................................................................................................................................5
4 MISCELLANEOUS............................................................................................................................................................5
4.1 THEORIES FOR CORRECTION OF AUDIO SYSTEMS............................................................................................5
4.1.1 AUDIO CORRECTION OF THE SPEAKERS....................................................................................................5
4.1.2 AUDIO CORRECTION OF A HEADPHONES...................................................................................................5
4.2 TROUBLESHOOTING..............................................................................................................................................6
4.3 CREDITS..................................................................................................................................................................7

1 PRE-REQU STS
1.1 PRODUCT
COMPAT B L T ES
➢AAX® Compatible (Audio plugi for DAW);
➢*AU® Compatible (Audio plugi for DAW);
➢*AUv3® Compatible (Audio plugi for DAW,
u tested);
➢VST3® Compatible (Audio plugi for DAW);
➢**Sta dalo e plugi (Applicatio for the
desktop).
(*) Eve if the plugi is specified as Sa dbox, it uses
libraries, a d eed to access exter al bi ary files.
Lower the security to allow it whe required.
(**) Requires a virtual audio cable, which is a driver
that you ca fi d o the I ter et.
——————————————————
Third-party logos:
1.2 M N MUM REQU REMENTS
➢A PC or a Mac with mi imum CPU of 2,5 GHz, 2
Core;
➢Mac® versio 10.11 a d later;
➢Wi dows® 7,1 a d later (64-bit);
➢A “Virtual Audio Cable”, is a driver used to co ect
the audio outputs of the operati g system to the
i puts of the “Sta dalo e Plugi ”, from which,
output must be adjusted to output o the audio
system, via the audio card, putti g the Sta dalo e
plugi i series i to the audio chai ;
➢A I ter et co ectio to access the lice se to
authorize the lau ch of the applicatio .
(*) Eve with this co figuratio , limitatio s of fu ctio s
may occur due to lack of resources, try it at the
lowest samplerate for the first time.
1.3 SPEC F CAT ONS
➢Li ear phase equalizer;
➢Phase equalizer;
➢Automatic level fu ctio ;
➢Clippi g i dicator with a other way to level at
-3dB peak,
➢Load/Save from or i to a text file (import
fu ctio );
➢I vert fu ctio ;
➢Li k fu ctio ;
➢True bypass fu ctio ;
➢The product accept Mo o, Stereo, a d Mo o to
Stereo co figuratio s;
1.4 DEF N T ONS
FIR : Fi ite Impulse Respo se;
DAW : Digital Audio Workstatio ;
OS : Operati g System;
1

2 SETUP
2.1 NSTALL
2.1.1 For Mac:
Dow load EQ-C for your daw from our website,
double click the i staller a d follow the i structio s.
NOTE: The AU EQ-C-S audio plugi requires the use
of the EQ-C Sta dalo e plugi to register it , a d to
be allowed i the correspo di g DAW for the Audio
U it plugi s “AU”.
2.1.2 For Windows:
Dow load EQ-C from our website, double-click o
the exe file a d follow the i structio s to i stall.
2.2 UN NSTALL
2.2.1 For Mac:
To u i stall, go to the Applicatio or to the daw audio
plugi folder, a d drag the applicatio /plugi i to the
trash. Se d the HOME/Music/EQ-C folder to the
trash, take care to keep a copy of your correctio files
for future use.
For other i stalled files, use the termi al as
admi istrator to u i stall it usi g the followi g
comma d li e:
sudo rm -R /usr/local/lib/libOMADE_TL_FIR_PH.dylib
-------------------------------------
A d for the older i sttallatio , before the versio 1.3,
use:
sudo rm -R /usr/local/lib/libOMADE_TL_FIR.dylib
2.2.2 For Windows:
To u i stall, use the Co trol Pa el/Programs a d
features, localize the EQ-C product a d click o
u i stall.
3 PRODUCT
3.1 OVERV EW
The audio plugi EQ-C, permits to load the freque cy respo se data for level a d phase correctio s of a audio
system, usi g simple text files, the values may be directly take from the ma ufacturer's website, usi g the
freque cy respo se curve a d phase measureme ts, or measured i a a -echoic chamber, or measured usi g a
specific head simulator for headpho e's freque cy respo se measureme ts with some correctio added o it.
There exists free software permitti g to get these values directly from images. You ca fi d video demo stratio
by visiti g our website at https://www.omade-tl.com/software_eq-c.html Click o the “Support” tab. If eeded,
we ca help you maki g the correctio files followi g your audio system (with a service fees).
We recomme d usi g this audio plugi with o ly o e wide-ra ge speaker for the left a d right cha el, o
tweeters, o sub-woofer.
We hope you will get complete satisfactio usi g our product EQ-C!
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3.2 DESCR PT ON
3.2.1 NTERFACE
Fig. 1_INTERFACE OF EQ-C-S
(The aspect may slightly change bet een da s).
3.2.2 FUNCT ONS
1. “O” butto is provided to reset all Eqs, Phases a d
the Master to zero, it ca be used as a bypass
with the use of the u do butto “<” (For a true
bypass use the DAW bypass butto );
2. Optio s, o Sta dalo e plugi o ly, this is the
audio setti gs, i put a d output & the buffer size
setti gs, it requires to restart the app after a
cha ge;
3. File ame i put to specify for the correctio -1.txt &
correctio -2.txt files to import or to export as
“correctio ”;
4. The “R” butto is used to read/import the values
from the previously specified file ame ;
5. The “S” butto is used to Save the EQ’s sliders
setti gs i a file ame-1.txt & file ame-2.txt files;
6. The “<“ butto is a u do butto , which permits to
recover the previous EQ’s setti gs after a cha ge;
7. The “>” butto is a redo butto , the u do a d redo
butto ca be used to compare differe t setti gs;
8. The combo box lists the Wi dow's fu ctio s to be
selected;
9. The “Factors” slider is a global “FIR factor” setti g,
relatively to the selected wi dow fu ctio , it acts
as a all EQs slope setti g;
10. The “S.Rate" or Sample Rate i dicator.
11. The “Coeffs" i dicates the maximum umber of
coefficie ts i use per filter;
12. EQ for the left a d right cha el, i mo o or mo o
to stereo co figuratio s;
13. dB I dicators are provided o the right a d left of
the EQs for the sliders;
14. LF is for the lower freque cies ra ge, HF for the
higher freque cies ra ge, all others are Ba d-pass
filters:
15. The LVL slider provided for each cha el ca also
be used as a bala ce co trol a d also, it
automatically limits the sou d level whe
correctio -x.txt are imported;
16. There are direct umerical value i dicators a d
also i put editors for the filters, the Factors, a d
the Master sliders;
17. The “MST” slider acts as a global output level i
stereo.
18. The butto L for “Li k”, permits to li k the co trol
of the right cha el to left cha el.
19. The butto s EQ & PH will display the Eqs or the
Phases correctio s sliders.
20. The butto A for Auto Level, will set the outputs
peak levels correspo di g to the i puts levels,
also the level i dicator which o ly take
measureme ts of the left cha el, while clippi g
will show the maximum measured peak, a d by
clicki g o it, it will reduce the level by this value
a d - 3dB, reseti g also its origi al state a d the
memorized values for the Auto Levels butto “A”.
21. It was also added a bypass butto “B” which is a
true bypass of the equalizer itself.
22. Also, the “I” butto was added to help i vert the
EQ's levels or the Phases Deviatio s.
3.2.3 KEYBOARD SHORTCUTS
✔Holdi g the ctrl keyboard key a d grabbi g a
slider to cha ge its values with more precisio ;
✔By holdi g the alt keyboard key a d clicki g o a
slider k ob, the slider goes to its i itial value, it
could also be do e by double clicki g the slider
k ob.
3

3.3 GENERAL T ES
The freque cies i dicated o the i terface are relative
a d rou ded for 44.1 a d 48 kHz, if you use 88.2 or
96 kHz, the freque cies will be approximately the
double of the values displayed. A d for this reaso ,
the EQ-C eeds a high umber of poi ts provided i
the audio correctio files i order to e sure greater
accuracy.
3.4 LOAD NG THE AUD O
CORRECT ON F LES
To load the freque cy respo se data from the audio
correctio files i to EQ-C, e ter the file ame without
the exte sio s "-1.txt" or "-2.txt" a d click the Play
"R" butto .
Loadi g the file will automatically i vert a d ormalize
these values i EQ-C, values which could be those of
the measured freque cy a d phase respo se curve of
a audio system, so there is o eed to ma ually
i vert these values to perform audio correctio .
Thus, to create a audio correctio file, it suffices to
obtai the poi ts of the freque cy a d phase
respo se curve a d to specify them i the audio
correctio files, with per li e, the freque cy i Hz, the
sou d level i dB, the phase i degree, these values
are separated by a space or a tabulatio .
3.5 SAV NG THE AUD O
CORRECT ON F LES
Saved equalizatio s are writte for left a d right
cha els, u der the “specifiedFileName-1.txt” a d
“specifiedFileName-2.txt”.
If you wish to create a custom equalizatio , a d to
save it, edit the file ame i the i put box
correspo di g a d click o the Save butto “S”.
WARN NG
f another file with the same name already exists
in the EQ-C folder, this would overwrite its
content without notification. Avoid loading a
detailed response curve file and saving it over, it
would affect the quality by its number of points,
which are useful whe cha gi g of sample-rate, re-
load after cha gi g it.
3.6 CUSTOM AUD O
CORRECT ON F LES
Co figuratio files use the exte sio .txt.
For each li e, the first term is the freque cy value i
Hz, the seco d is the measured level i dB, the third
is the Phase deviatio i degree, a d the separator
betwee each value, is a space or a tab.
There ca be as much freque cies as measured, the
audio plugi will co vert a d import them (mi a d
max dB values are automatically ormalized withi
the -18 a d +18 dB ra ge available for each EQ
sliders), each EQ's LVL will automatically correct each
cha el maximum output peak level.
Sample of frequency response levels and phases
saved for an audio system corrections in the files
“default-1.txt” for the left channel, and “default-2.txt”
for the right channel, at a samplerate of 44.1KHz:
“
31.250000 -0.000000 -0.000000
70.312500 -0.000000 -0.000000
140.625000 -0.000000 -0.000000
281.250000 -0.000000 -0.000000
562.500000 -0.000000 -0.000000
1125.000000 -0.000000 -0.000000
2250.000000 -0.000000 -0.000000
4500.000000 -0.000000 -0.000000
9000.000000 -0.000000 -0.000000
18000.000000 -0.000000 -0.000000
36000.000000 -0.000000 -0.000000
“
WARN NG: There must be freque cies i dicated for
the lowest a d highest freque cies, for 96 KHz, there
must be at least o e li e with correspo di g values
for the EQ & Phase correctio , at 72000 Hz, which is
0.75 times the freque cy sample rate, a d this dvided
by 2 for the other freque cies u til you reach the
highest specified o e, else the plugi will see i fi ite
values if the origi al values exceed -18 or 18dB.
3.7 NSTALL NG THE AUD O
CORRECT ON F LES
The folder EQ-C is located u der the user profile or
home directory, Music folder, if ot exists it should be
created automatically, otherwise please create a
folder with the ame “EQ-C” u der your HOME/Music
directory, all Respo seCurve.txt files are located i
this folder.
I stall the custom Respo seCurve.txt i to the EQ-C
folder u der your HOME/Music/EQ-C folder, or o PC
u der your C:/users/YourUserName/Music/EQ-C.
While addi g co figuratio files i the EQ-C folder
ma ually, duplicate if mo o, a d re ame the files with
the “-1” for the left cha el a d “-2” for the right o e.
4

3.8 KNOWN SSUES
●It seems that the level meter takes sometimes
false measureme ts: - click o the level i dicator
to reset the cou ter, a d the click fast o the
auto level butto “A” to adjust the output level
peak to be equal to the i put level;
We look forward to improve it!
4 M SCELLANEOUS
4.1 THEOR ES FOR CORRECT ON OF AUD O SYSTEMS
4.1.1 AUD O CORRECT ON OF THE
SPEAKERS
We recomme d usi g ge eric speaker measureme ts
made by the ma ufacturer, i cl. freque cy respo se
a d phase curves to get the data, usi g software to
co vert the graphics i to a spreadsheet, the have
your ow speakers calibrated by dedicated
compa ies where they use a a echoic chamber to
take measureme ts a d help you to get better sou d
accuracy!
With EQ-C i deed, you will be able to correct the
freque cy respo se a d the phase of your speakers
which are valid i a a echoic room, but ot i a real
room, you will probably also have to correct the
reverberatio of the room, which ca be do e by
doi g a IIR (I fi ite Impulse Respo se) of the room,
a d usi g its reverse phase i a IIR reverb audio
plugi .
For ow, this reverb correctio system is ot
impleme ted i EQ-C, but as there are ma y such
reverberatio s a d because we ca always use a
mi i-DAW to load the EQ-C a d a IIR reverberatio ,
this fu ctio will probably ot be added to EQ-C.
4.1.2 AUD O CORRECT ON OF A
HEADPHONES
We recomme d that you use ge eric headpho e
measureme ts made by third parties to start with,
a d the have your ow headpho es calibrated by
dedicated compa ies where they use a simulatio
head to help you get better sou d accuracy.
5

4.2 TROUBLESHOOT NG
D # COND T ON POSS BLE REASON
1 NO SOUND If usi g the Sta dalo e
applicatio , ope Optio s a d
check that there is audio comi g
at the i puts, check the outputs
selectio , a d that you have the
virtual audio cable driver i stalled
a d correctly adjusted;
- Try reduci g the audio
samplerate i your DAW or OS;
2 CRASHING ON STARTUP - Try to reduce the sampli g
freque cy;
- Check if your I ter et co ectio
is active a d fu ctio al;
- If you purchased the audio plug-
i , e ter your accou t crede tials
to activate the software, the
restart;
3 NOISES: POP, CUTTED SOUND - Try to reduce the sampli g
freque cy;
- Reduce the umber of FIR
factors, or cha ge the wi dowi g
fu ctio ;
4 COMBO BOX NOT RESPONDING
(ProTools for Wi dows)
- Try to click o the combo box
a d use the arrow keys to cha ge
the wi dow fu ctio , the click o
the Load butto “R”;
5 UNABLE TO WRITE CORRECTLY IN THE TEXT
AREA (Cubase for Wi dows)
- Use the Alt a d Shift keyboard
butto , alo e or together, while
you modify the i put area;
6 AU PLUGIN NOT RECOGNIZED IN DAW - There is a method to delete
specific files i the system o
Mac, to reset the list of audio
plugi s see by the DAW, o
request, we will give you the
procedure to do the same.
- Try removi g all EQ-C AUv3
plug-i s a d restart the computer;
For a y other problem related to this audio plugi , please co tact us directly via our co tact form o the
website: https://omade-tl.com/co tact.html Specify the DAW used, the operati g system a d describe the
problem, we will help you as soo as possible.
6

4.3 CRED TS
“Mac, AU, AUv3 and Appex are registered trademarks of Apple® Computer.”, “Windo s is a registered trademark
of Microsoft® Corporation”, “Pro Tools® and AAX® are registered trademarks of Avid, Inc”, "VST3 is a registered
trademark of Steinberg Media Technologies GmbH”, "Cubase is a registered trademark of Steinberg Media
Technologies GmbH”, “Juce is a registered trademark of Juce, LLC”, “Loopback is a trademark of Rogue Amoeba
Soft are, Inc”, “Virtual Audio Cables is a trademark of VB-Audio”, “EDEN Tool is a registered trademark of PACE-
ANTI-PIRACY”, EQ-C™ is a trademark of OMADE™ / OMADE-TL, TL being the initials of the author, all other
name, brand-name of mark may be o ned by their respective representative OR company.
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