Win 10, IDT High definition audio codec, Equalizer APO has no effects

[merovinjo]

I've installed E-Apo on my Win 10, with IDT High definition audio codec, and i have two result: no sound at all, or no E-Apo effect on sound.
In Windows 8 it worked very well.
Any ideas?
Thanks

[merovinjo]

This is my render registry key

[merovinjo]

up

[Jonas Dahlinger]

This might be an incompatibility with the APOs shipped with the IDT audio driver.

Try this: Open the Configurator, select your audio device by clicking on its connection name, open the troubleshooting options and uncheck both "Use original APO" checkboxes. Click OK and do the requested reboot.

[Rudolph]

Finally !!!! Thank you.

I had a similar problem, I also posted in this or Peace EQ forum about this.. But I had problems with DTS EQ, so I decided to try this EQ

This is the fix that's working:

uncheck both "Use original APO" checkboxes

My specs: Toshiba Satellite L-50
IDT Audio with DTS Sound (default)

I have another few questions. Can this Equalizer APO be tuned to have equal sound as with DTS Sound EQ ? - The same bass boost and maybe automatic device (external, headphones) changing?

Another question would be if the sound quality is the same with unchecked 'original APO' ?

[Jonas Dahlinger]

Can this Equalizer APO be tuned to have equal sound as with DTS Sound EQ ? - The same bass boost [...]?

Likely yes, because Equalizer APO can be configured to achieve an arbitrary frequency response, it should be able to emulate any EQ effect. But you have to find out the frequency response to be able to configure E-APO correctly, which is not so easy. Normally I would recommend to use a loop back cable, because that will always work, but your laptop seems to have a combined headphone/mic port, so you can't use a regular cable. If your sound card provides an input device like "Stereo mix" or "What you hear" you might use that. Then, I would install Room EQ Wizard and do a measurement, which will show you the frequency response. You can then either export that frequency response to a text file and import that text file into E-APO's GraphicEQ filter (after applying some smoothing in REW) or you try to find a matching filter configuration using peaking filters etc. in Room EQ Wizard's EQ panel and then export the filter settings as a text file, which can be directly included into config.txt using the Include command. If you want to go that way you can ask me for a more detailed explanation if you want.

[...] automatic device (external, headphones) changing?

If the two outputs are separate entries in the Configurator (and in the control panel) then you can just use the Device command to specify individual sections in config.txt.

If the device does not change when switching between the outputs, it can still be possible but will require much more work. You need to find a registry value that will change between two states when you switch the output. The right tool for that is Process Monitor, but it will show you much more events than you need and you need to use some intuition to apply the correct filters. Anyway, I successfully found the needed registry value for a Creative Sound Blaster Recon3Di and for a Realtek ALC 1150, but as I don't have a device with an IDT sound card I can't do this for you. If you manage to find an appropriate registry value, you can use the If command with the readRegString or readRegDWORD function to specify individual sections in config.txt.

[Rudolph]

I did that a few months ago with Room EQ.

Are these results ok, considering I used a DIY loopback cable?

I don't know why it's a straight line, so should there really be any peaking adjustments for inaudible frequencies like 0-10 ?

[Jonas Dahlinger]

It looks as if your cable is working. The drop in the lowest and highest frequencies is normal as the hardware is not perfect. I would not try to correct that as it should be inaudible. What is missing is the bass boost that you wanted to reproduce. Did you really have DTS Sound EQ enabled when you did that measurement?

[Rudolph]

I think I had.. But it didn't somehow appear on EQ.

I restoerd previous WIN version and did test again with IDT EQ

Looks very different - the end/higher frequencies or maybe my sound card is going bad.

I also can't seem to find where to export filters, everything I imported in peace and equalizer apo said 'no filters found'... Do I need to manually set frequencies in REW and then export that filter file?

This is all I can export in txt

Equaliser: DSP1124P
Soundcard
Filter  1: ON  PA       Fc     100 Hz (  100) Gain   0.0 dB  BW/60     4
Filter  2: ON  PA       Fc    93.0 Hz (  100 -7 ) Gain   0.0 dB  BW/60     4
Filter  3: ON  None   
Filter  4: ON  None   
Filter  5: ON  None   
Filter  6: ON  None   
Filter  7: ON  None   
Filter  8: ON  None   
Filter  9: ON  None   
Filter 10: ON  None   
Filter 11: ON  None   
Filter 12: ON  None   

update:

I installed Viper4Windows and it can replace DTS settings. So no need to do this manually.

[Kamil Kowalski]

Cheers I could not find the solution why my sound did not work on the sound card but bluetooth was working fine.