Using EqualizerAPO to load FIR filters and do system wide DSP Crossover
A system-wide equalizer for Windows 7 / 8 / 8.1 / 10 / 11
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hi guys, ill try to make this as short as possible.
i am making a two way speaker and id like to do a serious dsp/digital crossover. i will measure the drivers using umik-1 and rew, load the measurments into rephase, generate a low pass filter and a high pass filter. heres where the confusion begins.
i am making a dedicated dsp pc instead of something pre-made like minidsp. so the chain will be:
source pc to dsp pc to 2x stereo topping dacs connected via usb. is it possible to use equalizerapo to output the left high pass and left low pass filters via usb output to topping dac #1 and right high pass and right low pass filters via usb output to topping dac #2?
i am also not sure how to get the digital input (spdif/aes/i2s not sure) from source pc selected in eqapo. theoretically if im watching a youtube video or playing a game, id like the audio from that to be sent to the dsp pc, processed, sent to my dacs, to the amps and then speakers.
hopefully this was clear, any and all information and guidance is very much appreciated. im still just a student of the dsp world, and i am so grateful communities like this exist.
thank you guys!
Do you install Equalizer APO on the source pc or the dsp pc? If on the dsp pc, you have to be sure that you get Equalizer APO going on the USB DAC's. Sometimes it works out of the box, sometimes you need to fix things by using the troubleshooting options of the Configurator and sometimes is almost impossible to get Equalizer APO going usually due to the audio driver, in this case the DAC's, hasn't got the structure (APO) needed for Equalizer APO to use.
If you're unstalling Equalizer APO on the source pc the same applies but using the standard audio driver usually easier.
Also a question: Do you connect the source pc digitally to the dsp pc by SPDIF for instance?
hi peter, thank you for responding.
right now i have equalizerapo on dsp pc. how can i make sure that equalizerapo is going on the usb dacs? if i go to configurator, i can see both usb dacs listed.
yes, source pc is spdif out into spdif input on sound card in dsp pc
In the Configurator check the left checkboxes (next to the connector name perhaps something with dac?) and restart pc.
What the Configurator does is reroute (of trying to) the audio stream of a DAC to its audio process engine. If successful you now can use the copy command to do the needed channel rerouting. But first make sure if Equalizer APO is running on the dac, for instance by adding a pre amp command. If you're using Peace just move the pre amp slider to notice any volume difference.
Hi Peter,
Both of my DACs show up in the configurator, and testing with with pre-amp slider functions correctly.
Following my initial example: Source PC (via SPDIF) to DSP PC to Topping DAC #1 and DAC #2 (both via 2 separate USB cables).
Would the following example code work to create a Crossover for 2-way Speakers in EqAPO in the config.txt? (Please ignore the content of the filters, they are for headphones, not speakers.)
Copy: 1=L 2=R 3=L 4=R
Device: TOPPING USB DAC 1 Speakers
Channel: 1 2 #### Left Speaker High and Low Pass
Preamp: -5.2 dB
Filter 1: ON LS Fc 105 Hz Gain 5.5 dB
Filter 2: ON PK Fc 83 Hz Gain -3.9 dB Q 0.4
Filter 3: ON PK Fc 1320 Hz Gain -4.7 dB Q 1.5
Filter 4: ON HS Fc 1400 Hz Gain 3 dB
Filter 5: ON PK Fc 1580 Hz Gain -0.7 dB Q 7
Filter 6: ON PK Fc 2950 Hz Gain -1.2 dB Q 5
Filter 7: ON PK Fc 3600 Hz Gain -3.6 dB Q 3
Filter 8: ON PK Fc 5750 Hz Gain -6.2 dB Q 4
Filter 9: ON PK Fc 9080 Hz Gain -2.6 dB Q 6
Filter 10: ON PK Fc 11000 Hz Gain -5.4 dB Q 6
Device: TOPPING USB DAC 2 Speakers
Channel: 3 4 ##### Right Speaker High and Low Pass
Preamp: -5.2 dB
Filter 1: ON LS Fc 105 Hz Gain 5.5 dB
Filter 2: ON PK Fc 83 Hz Gain -3.9 dB Q 0.4
Filter 3: ON PK Fc 1320 Hz Gain -4.7 dB Q 1.5
Filter 4: ON HS Fc 1400 Hz Gain 3 dB
Filter 5: ON PK Fc 1580 Hz Gain -0.7 dB Q 7
Filter 6: ON PK Fc 2950 Hz Gain -1.2 dB Q 5
Filter 7: ON PK Fc 3600 Hz Gain -3.6 dB Q 3
Filter 8: ON PK Fc 5750 Hz Gain -6.2 dB Q 4
Filter 9: ON PK Fc 9080 Hz Gain -2.6 dB Q 6
Filter 10: ON PK Fc 11000 Hz Gain -5.4 dB Q 6
Last edit: VeerK 2020-03-11
Your example is in principle correct. To get the following connection scheme (I assume the low and high drivers have separate connectors)
I would use the following commands:
LR and RR are channel output on connectors for left and right rear speakers but now used for the high drivers.
Note: I'm not sure about the usage of your comments statement ####. It isn't according to the command specs of Equalizer APO (but it may work nonetheless).
Hmmm, by wiki, channel name RR points to either channel #4 or #6 ... . Does your suggestion bypass this?
I guess at a 5.1 or 7.1 setting of an audio device, the RR audio will always be on channel 6. Only setting the device to quadraphonic will RR be 4. But perhaps I'm wrong about this.
Hi Peter,
All of the commands work, so as it stands now, here is my code:
Copy: LLOW=L LHIGH=L RLOW=R RHIGH=R
Channel: LLOW RLOW
low pass filter commands
Preamp: -5.2 dB
Filter 1: ON LS Fc 105 Hz Gain 5.5 dB
Filter 2: ON PK Fc 83 Hz Gain -3.9 dB Q 0.4
Filter 3: ON PK Fc 1320 Hz Gain -4.7 dB Q 1.5
Filter 4: ON HS Fc 1400 Hz Gain 3 dB
Filter 5: ON PK Fc 1580 Hz Gain -0.7 dB Q 7
Filter 6: ON PK Fc 2950 Hz Gain -1.2 dB Q 5
Filter 7: ON PK Fc 3600 Hz Gain -3.6 dB Q 3
Filter 8: ON PK Fc 5750 Hz Gain -6.2 dB Q 4
Filter 9: ON PK Fc 9080 Hz Gain -2.6 dB Q 6
Filter 10: ON PK Fc 11000 Hz Gain -5.4 dB Q 6
Channel: LHIGH RHIGH
high pass filter commands
Preamp: -5.2 dB
Filter 1: ON LS Fc 105 Hz Gain 5.5 dB
Filter 2: ON PK Fc 83 Hz Gain -3.9 dB Q 0.4
Filter 3: ON PK Fc 1320 Hz Gain -4.7 dB Q 1.5
Filter 4: ON HS Fc 1400 Hz Gain 3 dB
Filter 5: ON PK Fc 1580 Hz Gain -0.7 dB Q 7
Filter 6: ON PK Fc 2950 Hz Gain -1.2 dB Q 5
Filter 7: ON PK Fc 3600 Hz Gain -3.6 dB Q 3
Filter 8: ON PK Fc 5750 Hz Gain -6.2 dB Q 4
Filter 9: ON PK Fc 9080 Hz Gain -2.6 dB Q 6
Filter 10: ON PK Fc 11000 Hz Gain -5.4 dB Q 6
Copy: L=LLOW R=RLOW
Copy: LR=LHIGH RR=RHIGH
Device: Speakers TOPPING USB DAC {2be5cf86-8df7-4076-b0cd-c84f8c727e64}
Channel: L LR
Device: Speakers USB Audio DAC {d69632a8-2982-45d2-a161-e701b31e5bb6}
Channel: R RR
However, to test this out, I connected an amp to the Topping DAC to test if it was outputting sound, and it does not. It appears that sound only works when one DAC is selected in Windows as the default, thus meaning at any point, only the Left or the Right speaker is functioning. Any insight as to how I can fix this?
*Maybe Windows/EqualizerAPO/device driver/config limitation in question. *
EDIT: -------------------------
Channels are available by device so you should use L and R channels for both because these you have there.
Long time since used EqualizerAPO but, AFAICR, you should not use Device -command as separator for filters ... (check on wiki) :
Device: Speakers TOPPING USB DAC {2be5cf86-8df7-4076-b0cd-c84f8c727e64}; Speakers USB Audio DAC {d69632a8-2982-45d2-a161-e701b31e5bb6}
Channel: L
filters..
Channel: R
filters
EDIT ENDS -----------------------
Usually crossover is done using integrated audio chip because of it has enough channels for one device operations (and also quality is good enough for crossover function). When you use two or more devices for the job there are some limitations and issues you're gonna face.
You be able to use up to three output devices at once with VB-Audio's Voicemeeter BANANA (and it integrates well with EqualizerAPO).
Last edit: Juha 2020-04-11
To further clarify. By default Windows allows for one output device. Although the filtering is done on both devices, the audio stream is only routed through one of them, the default device. The clever feature of VoiceMeeter Banana and all VB-Audio software is, that it's able to reroute and mix audio streams by creating virtual devices. One major issue users (and I) are experiencing is crackling and distorted audio. But this doesn't have to be the case on your computer.
Thanks, at the moment Banana works fine outputting to both DACs using A1 and A2 simultaneously. Furthermore, a rudimentary test confirms that signals are being filtered on the way to both DACs. The problem now is the LR and RR mapping that you kindly helped does not seem to work, where for both Devices only L and R works. I am testing using just preamp adjustment, and only L and R work for the channels, but the problem is I do not know if L corresponds to high pass and R low pass, or some other variant. I can repost the code if needed, thank you Peter!
I'm having some doubts about the routing, especially as you're experiencing a problem with LR and RR . The commands I've come up with would work nicely with one device, so one DAC having 5.1 input and output. But you need to split the audio left and right onto DAC 1 and rear left and rear right onto DAC 2.
I've drawn schematically how to do things. The routing scheme looks like the attached image. I don't know how to route the splitting audio onto the 2 dacs. I've marked this with the blue question mark. Somehow the stereo signal has to be split and rerouted to the 2 separate DACs. VoiceMeeter is the obvious choice as it can reroute and mix audio by creating virtual devices.
In the second image I have tried to draw a solution using the source pc and the output pc but I got stuck. I can't seem to find a solution of rerouting the input from spdif onto the 2 DACs. I've got the feeling I'm missing something obvious.
First of all Peter, thank you for continually sharing your time and knowledge with me, please understand it is very much appreciated! As of now, I haven't tried to connect the source PC to the output PC, I am using the Source PC as the DSP XO provider through EqAPO. I am considering using SPDIF out from SourcePC to SPDIF in through a SoundBlaster ZXR connected to DSP Output PC. Is this where you anticipate I will encounter issues? Does the code below set a foundation for easiness in the next steps?
Here is the current status:
1. Running all code on Source PC, haven't yet tried on Source PC to Ouput PC
2. Output to both DACs provided by Voicemeeter, successful
3. Code allows for HP and LP filters to be controllable individually per output DAC
4. L and R for each DAC to correspond to LLOW/RLOW and LHIGH/RHIGH
5. Looking for alternatives to running Voicemeeter
Here is the slightly modified code:
config.txt
Channel: L R
Copy Channels into Quadraphonic Status
Copy: LLOW=L LHIGH=L RLOW=R RHIGH=R
Low Pass Filter Commands
Channel: LLOW RLOW
Preamp: -5.2 dB
Filter: #Truncated for this post
High Pass Filter Commands
Channel: LHIGH RHIGH
Preamp: -5.2 dB
Filter: #Truncated for this post
Device: Output A1 Voicemeeter
Channel: L
Copy: L=LLOW
Channel: R
Copy: R=LHIGH
Device: Output A2 Voicemeeter
Channel: L
Copy: L=RLOW
Channel: R
Copy: R=RHIGH
I think I can summarize my thoughts by saying that perhaps the channels of one device can't be put onto the channels if another device. Well, may be it can but I haven't use it in that way :)
The cause of this line of thinking happened when you reported that the LR and RR mapping didn't work. On the other hand this may be just different Windows settings of the used devices. For instance one device on Quadraphonic where the rear channels are on channels 3 and 4. And another device on 5.1 or 7.1. where the rear channels are 5 and 6 (see the channel command).
Anyway, am I correctly interpreting that your current setup works? If so, the channels rerouting is working and you might just have to alter the Device: VoiceMeeter commands to the 2 DACs so you can do without VoiceMeeter. In this case the source pc has the two DACs connected.
To answer your question "Is this where you anticipate I will encounter issues?", it's again about the channels rerouting and it's about input. One SPDIF to the output PC means that all channels are put together on one L/R channel and then connected to the output pc. As I understand it, this should be outputs A1 VoiceMeeter SPDIF and A2 VoiceMeeter SPDIF but that's impossible because there aren't such outputs.
In general your idea of using 2 DACs provides a good way of doing things but I'm having trouble envisioning a solution. The obvious solution is to have 1 DAC (5.1 or 7.1) with 6 or 8 output connectors, so 1 device and some channels rerouting within this device.
Hi Juha, I'm a little bit confused by what you are saying.
I am using DAC #1 for left speaker, DAC#2 for right speaker. Theoretically, L is for low pass and R is for high pass on each speaker. How do you suggest I should rewrite my config file to do this?
If your code works then no need for changes.
Hi Juha,
EqAPO has some difficulty outputting L and R to each device, it does the High and Low Pass filtering just fine for source L and R channels, but it gets confused to trying to send LLowPass and LHighPass to Voicemeeter A1 and RLowPass and RHighPass to Voicemeeter A2. As of right now, the code ignores RLowPass and RHighPass, and just sends LLowPass and LHighPass to both A1 and A2 outputs
Any experience you can share is great!
I have not much played with EqualizerAPO lately so this is just a thought to try what you get out from either A1, A2 (select your DACs as output devices) or B1,B2 in Voicemeeter:
(I don't remember the menaing of this option but,) dunno if you should or shouldn't set the Configurator editor device (selection on top of the Editor screen) to be Voicemeeter or something else? I would try 1st some other device than Voicemeeter.
You could also try by replacing Device: lines with your DACs device name and GUID.
There's no example on wiki if Device: command can be used the way used in above script so, you have to test this. Another issue may come from two identical DACs you have there ... how driver handles two devices (in your scripts above those DACs are named differently but you say they are both Topping DACs ... ).
Hi Juha,
First of all, thank you for the fast response, it was immensely helpful diagnosing the issue! My previous code was functioning properly, and the code you wrote also functions 100% correctly, verified by looking at the Analysis Panel and the Frequency Response for L and R, on output A1 and output A2 (on top of the Editor Screen). It seems like EqAPO is functioning correctly!
The problem seems to be that Voicemeeter is copying A1 to A2, so when applying the filters, the filters for A1 (Topping DAC) get copied to A2 (SMSL DAC). To avoid driver issues I have been using 2 different DACs, Topping and SMSL for a few weeks. However, in Windows, 2 different IDs are assigned to both Topping DACs so I am not worried about that issue.
My problem now seems to be trying to figure out how to fix Voicemeeter output, I can't understand why A1 APO is being copied to A2 APO. I enabled B(Virtual Output) and it receives A2 APO. I have attached a picture of my Voicemeeter GUI, if it helps at all.
Modified code for the moment:
Preamp: -5.2 dB
Channel: L
Device: Output A1 Voicemeeter
Channel: 1
# Low Pass Filter Commands
Filter: ON LS Fc 105 Hz Gain 5.5 dB
Filter: ON PK Fc 83 Hz Gain -3.9 dB Q 0.4
Filter: ON PK Fc 1320 Hz Gain -4.7 dB Q 1.5
Filter: ON HS Fc 1400 Hz Gain 3 dB
Filter: ON PK Fc 1580 Hz Gain -0.7 dB Q 7
Filter: ON PK Fc 2950 Hz Gain -1.2 dB Q 5
Filter: ON PK Fc 3600 Hz Gain -3.6 dB Q 3
Filter: ON PK Fc 5750 Hz Gain -6.2 dB Q 4
Filter: ON PK Fc 9080 Hz Gain -2.6 dB Q 6
Filter: ON PK Fc 11000 Hz Gain -5.4 dB Q 6
Channel: 2
# High Pass Filter Commands
Preamp: -15.6dB
Filter: ON LS Fc 105 Hz Gain 5.5 dB
Filter: ON PK Fc 83 Hz Gain -3.9 dB Q 0.4
Filter: ON PK Fc 1320 Hz Gain -4.7 dB Q 1.5
Filter: ON HS Fc 1400 Hz Gain 3 dB
Filter: ON PK Fc 1580 Hz Gain -0.7 dB Q 7
Filter: ON PK Fc 2950 Hz Gain -1.2 dB Q 5
Filter: ON PK Fc 3600 Hz Gain -3.6 dB Q 3
Filter: ON PK Fc 5750 Hz Gain -6.2 dB Q 4
Filter: ON PK Fc 9080 Hz Gain -2.6 dB Q 6
Filter: ON PK Fc 11000 Hz Gain -5.4 dB Q 6
Channel: R
Device: Output A2 Voicemeeter
Channel: 1
# Low Pass Filter Commands
Filter: ON LS Fc 105 Hz Gain 5.5 dB
Filter: ON PK Fc 83 Hz Gain -3.9 dB Q 0.4
Filter: ON PK Fc 1320 Hz Gain -4.7 dB Q 1.5
Filter: ON HS Fc 1400 Hz Gain 3 dB
Filter: ON PK Fc 1580 Hz Gain -0.7 dB Q 7
Filter: ON PK Fc 2950 Hz Gain -1.2 dB Q 5
Filter: ON PK Fc 3600 Hz Gain -3.6 dB Q 3
Filter: ON PK Fc 5750 Hz Gain -6.2 dB Q 4
Filter: ON PK Fc 9080 Hz Gain -2.6 dB Q 6
Filter: ON PK Fc 11000 Hz Gain -5.4 dB Q 6
Channel: 2
#High Pass Filter Commands
Preamp: -10.4dB
Filter: ON LS Fc 105 Hz Gain 5.5 dB
Filter: ON PK Fc 83 Hz Gain -3.9 dB Q 0.4
Filter: ON PK Fc 1320 Hz Gain -4.7 dB Q 1.5
Filter: ON HS Fc 1400 Hz Gain 3 dB
Filter: ON PK Fc 1580 Hz Gain -0.7 dB Q 7
Filter: ON PK Fc 2950 Hz Gain -1.2 dB Q 5
Filter: ON PK Fc 3600 Hz Gain -3.6 dB Q 3
Filter: ON PK Fc 5750 Hz Gain -6.2 dB Q 4
Filter: ON PK Fc 9080 Hz Gain -2.6 dB Q 6
Filter: ON PK Fc 11000 Hz Gain -5.4 dB Q 6
Last edit: VeerK 2020-04-16
IIRC, BANANA version should work properly with A1-A3 devices.
Can you control A1 and A2 inputs there (now it shows just A)?
Ah, that was just the regular one, BANANA version works perfectly! Juha, my friend, thank you very much for sharing your time with me, it helped me resolve the last little bit of my issue. EqAPO is a phenomenal software, and combined with VBanana, it is incredibly powerful. I now have a fully functional system-wide Digital XO, with quick editing on the fly using 2 separate ultra-low distortion DACs feeding 2 ultra-low distortion amps.
Now, it's time to play with rePhase to make a finely-tuned XO, I used to use a LR 4th order passive crossover, but I have read that minimum phase FIR filtering offers more flexibility. I still have to test getting input from a source pc to a dedicated dsp pc, and then applying the below eq code to it, but I do think VBanana should help me solve this.
Last edit: VeerK 2020-04-16
Not to spoil the party but a CHANNEL 1 command is the same as a CHANNEL L (see wiki) command. If I'm not mistaken VoiceMeeter isn't copying A1 to A2, Equalizer APO does due to the given commands.
In the config given in your latest post doesn't have the outcome as foreseen. For instance the first CHANNEL L command doesn't do anything. Equalizer APO reads the config file as follows:
Pre amp -5.2 dB applied on all devices (including input)
Channel L -> select channel L of all devices (this does nothing because of the next commands)
Device command -> do next commands only on A1
Channel 1 -> select channel L of A1 and do next commands on it
Low pass filter done on channel L
Channel 2 -> select channel R of A1 and do next commands on it
Pre amp -15.6 dB done on channel R
High pass filter done on channel R
Channel R -> select channel R of A1 (this does nothing because of the next commands)
Device command -> do next commands only on A2
Channel 1 -> select channel L of A2 and do next commands on it
Low pass filter done on channel L
Channel 2 -> select channel R of A2 and do next commands on it
Pre amp -10.4 dB done on channel R
High pass filter done on channel R
I guess, the above processing by Equalizer APO isn't what you want or expect.
Hi Peter, you aren't spoiling anything, in fact the previous code I posted was incomplete, my mistake. I had to incorporate some of the code you previously shared to make a fully functioning config. I wouldn't have made any of this progress without your help, so thank you again. I will be supporting your Peace project to show my gratitude. I still have to test getting input from a source pc to a dedicated dsp pc, and then applying the below eq code to it, but I do think VBanana should help me solve this.
I am posting it here for you, in case you want to test it out:
FINAL TESTED AND FUNCTIONING 2 DAC EQ RUNNING ON SOURCE PC
Preamp: -5.2 dB
Copy: LLOW=L LHIGH=L RLOW=R RHIGH=R
Channel: LLOW LHIGH
Device: Output A1 Voicemeeter
Channel: LLOW
# Low Pass Filter Commands
Filter: ON LS Fc 105 Hz Gain 5.5 dB
Filter: ON PK Fc 83 Hz Gain -3.9 dB Q 0.4
Filter: ON PK Fc 1320 Hz Gain -4.7 dB Q 1.5
Filter: ON HS Fc 1400 Hz Gain 3 dB
Filter: ON PK Fc 1580 Hz Gain -0.7 dB Q 7
Filter: ON PK Fc 2950 Hz Gain -1.2 dB Q 5
Filter: ON PK Fc 3600 Hz Gain -3.6 dB Q 3
Filter: ON PK Fc 5750 Hz Gain -6.2 dB Q 4
Filter: ON PK Fc 9080 Hz Gain -2.6 dB Q 6
Filter: ON PK Fc 11000 Hz Gain -5.4 dB Q 6
Channel: LHIGH
# High Pass Filter Commands
Filter: ON LS Fc 105 Hz Gain 5.5 dB
Filter: ON PK Fc 83 Hz Gain -3.9 dB Q 0.4
Filter: ON PK Fc 1320 Hz Gain -4.7 dB Q 1.5
Filter: ON HS Fc 1400 Hz Gain 3 dB
Filter: ON PK Fc 1580 Hz Gain -0.7 dB Q 7
Filter: ON PK Fc 2950 Hz Gain -1.2 dB Q 5
Filter: ON PK Fc 3600 Hz Gain -3.6 dB Q 3
Filter: ON PK Fc 5750 Hz Gain -6.2 dB Q 4
Filter: ON PK Fc 9080 Hz Gain -2.6 dB Q 6
Filter: ON PK Fc 11000 Hz Gain -5.4 dB Q 6
Copy: L=LLOW R=LHIGH
Channel: RLOW RHIGH
Device: Output A2 Voicemeeter
Channel: RLOW
## Low Pass Filter Commands
Filter: ON LS Fc 105 Hz Gain 5.5 dB
Filter: ON PK Fc 83 Hz Gain -3.9 dB Q 0.4
Filter: ON PK Fc 1320 Hz Gain -4.7 dB Q 1.5
Filter: ON HS Fc 1400 Hz Gain 3 dB
Filter: ON PK Fc 1580 Hz Gain -0.7 dB Q 7
Filter: ON PK Fc 2950 Hz Gain -1.2 dB Q 5
Filter: ON PK Fc 3600 Hz Gain -3.6 dB Q 3
Filter: ON PK Fc 5750 Hz Gain -6.2 dB Q 4
Filter: ON PK Fc 9080 Hz Gain -2.6 dB Q 6
Filter: ON PK Fc 11000 Hz Gain -5.4 dB Q 6
Channel: RHIGH
# High Pass Filter Commands
Filter: ON LS Fc 105 Hz Gain 5.5 dB
Filter: ON PK Fc 83 Hz Gain -3.9 dB Q 0.4
Filter: ON PK Fc 1320 Hz Gain -4.7 dB Q 1.5
Filter: ON HS Fc 1400 Hz Gain 3 dB
Filter: ON PK Fc 1580 Hz Gain -0.7 dB Q 7
Filter: ON PK Fc 2950 Hz Gain -1.2 dB Q 5
Filter: ON PK Fc 3600 Hz Gain -3.6 dB Q 3
Filter: ON PK Fc 5750 Hz Gain -6.2 dB Q 4
Filter: ON PK Fc 9080 Hz Gain -2.6 dB Q 6
Filter: ON PK Fc 11000 Hz Gain -5.4 dB Q 6
Copy: L=RLOW R=RHIGH
Last edit: VeerK 2020-04-16
I don't think that the Channel commands before the Device commands do something, for instance:
Channel: RLOW RHIGH
Device: Output A2 Voicemeeter
Channel: RLOW
The command Channel: RLOW RHIGH selects the created virtual channels but there aren't any commands being applied on these channels, certainly not on the next device command. A device command isn't applied by a channel command. I guess you want to reroute the RLOW and RHIGH to A2 but this doesn't happen. A channel command is an "apply" command, not a reroute action. This is the problem. How do we get this rerouting done when Equalizer APO doesn't have the commands to do so? There's of course hardware rerouting: Take a channel of one device and use it as input for another device.