Announcing beta-test of PKHarmonic VST plugin

[DualTriode]

What about adding phase of each harmonic?

Yes please phase.

I am now playing with what changing phase sounds like with JFET's.

Thanks DT

 

[pkane]

Yes please phase.

I am now playing with what changing phase sounds like with JFET's.

Thanks DT

Do you need to specify the precise phase angle for each harmonic, or to simply flip the sign (change phase by 180 degrees)?

 

[DualTriode]

Do you need to specify the precise phase angle for each harmonic, or to simply flip the sign (change phase by 180 degrees)?

Hello,
If you let me dream out loud, first being able to flip everything 180 degrees like an inverting amplifier stage would be cool.

Second would be to flip each Harmonic 180 degrees independently.

In the real world I do not know for sure if harmonics are in constant phase with the fundamental frequency or not. This is in the category of it would be nice to adjust with the precise phase angle.

I am a visual kind of thinker. I see different size bicycle wheels all spinning at different speeds with colored ribbons tied to the valve stems. All those sine and cosine possibilities.

Thanks DT

 

[pkane]

In the real world I do not know for sure if harmonics are in constant phase with the fundamental frequency or not.

They are not, usually. If you use REW or my Multitone, you can see the phase of the harmonics when measuring a specific fundamental.

 

[KSTR]

In the real world I do not know for sure if harmonics are in constant phase with the fundamental frequency or not.

Even for a simple static transfer function nonlinearity (fully time-invariant system, and flat gain vs. frequency) the harmonic phases are all over the place, no simple 0° or 180° offset from the fundamental. The phases vary with level but not with frequency. Quick sim:

And like Paul said it shows up exactly like this in measurements.

 

[RandomEar]

I have encountered a weird bug when using PK Harmonic in conjunction with EAPO. Quickly scanned the thread and didn't see anything about this. The plugin is last in my list of EAPO filters. There's about 8 or 9 peaking filters active, 3 pre-amps and two channel selectors. The problem is the same, when I deactivate all of those. Without PK Harmonic, the predicted FR currently looks like this:

As soon as I activate the plugin, the FR prediction becomes horribly distorted:

The plugin settings don't seem to really matter - the FR always looks like this and it always changes a bit when opening/closing the plugin UI. Sometimes the ripples on the left move a bit, sometimes the downward slope continues past 1 kHz, it's inconsistent. Audibly, the FR is definitely not changed like the prediction/display suggests. Don't know if this is a bug in EAPO or PK Harmonic, but wanted to report this here, first.

 

[pkane]

I have encountered a weird bug when using PK Harmonic in conjunction with EAPO. Quickly scanned the thread and didn't see anything about this. The plugin is last in my list of EAPO filters. There's about 8 or 9 peaking filters active, 3 pre-amps and two channel selectors. The problem is the same, when I deactivate all of those. Without PK Harmonic, the predicted FR currently looks like this:
View attachment 208814
As soon as I activate the plugin, the FR prediction becomes horribly distorted:
View attachment 208816
The plugin settings don't seem to really matter - the FR always looks like this and it always changes a bit when opening/closing the plugin UI. Sometimes the ripples on the left move a bit, sometimes the downward slope continues past 1 kHz, it's inconsistent. Audibly, the FR is definitely not changed like the prediction/display suggests. Don't know if this is a bug in EAPO or PK Harmonic, but wanted to report this here, first.

I'm not an EAPO user, so I'm afraid I have no idea what's causing this or what a FR prediction is and why it looks distorted. Just tried to go to the website and was greeted by this:

Is there a better place to download EAPO from?

 

[RandomEar]

I'm not an EAPO user, so I'm afraid I have no idea what's causing this or what a FR prediction is and why it looks distorted. Just tried to go to the website and was greeted by this:
View attachment 208879
Is there a better place to download EAPO from?

I think the only valid source is https://sourceforge.net/projects/equalizerapo/files/1.3/ And by visiting, I just realized that a new version is out since three days. I'm still on 1.2.1.

 

[pkane]

I think the only valid source is https://sourceforge.net/projects/equalizerapo/files/1.3/ And by visiting, I just realized that a new version is out since three days. I'm still on 1.2.1.

Yeah, don't know what the FR window is showing. It's definitely not the correctly predicted frequency response:

Here is a capture using a loop-back driver with REW of what's coming out from EAPO + PK Harmonic:

And here's white noise with the same exact PK Harmonic and EAPO settings. No 61dB gain visible anywhere that I can see

 

[RandomEar]

OK. Thanks for looking into this. Looks like a general incompatibility, at least not specific to my system.

Would you be willing to bring this up with the EAPO author? You know your plugin, he knows what EAPO does to produce the graph - sounds more efficient than me just posting a random bug report over at sourceforge

 

[pkane]

OK. Thanks for looking into this. Looks like a general incompatibility, at least not specific to my system.

Would you be willing to bring this up with the EAPO author? You know your plugin, he knows what EAPO does to produce the graph - sounds more efficient than me just posting a random bug report over at sourceforge

Probably better if you report this. I know nothing about EAPO and the plug-in causes this display problem even in the bypass mode, where no processing is done, so I don’t really see how it could be causing this.

 

[DUKE-DUKE]

Hi all. How can I install PKHarmonic VST Plugin on foobar2000 with windows 10? Thank you very much and best regards.

 

[pkane]

Hi all. How can I install PKHarmonic VST Plugin on foobar2000 with windows 10? Thank you very much and best regards.

Hi DUKE-DUKE,

You'll need to install the foobar VST plugin adapter (foo_vst, version 2.4 is what I've used before).

Then, in preferences you should be able to add PK Harmonic (32 bit version) and Foobar will restart to activate it.

It'll look something like this:

Then go to DSP Manager, and enable PK Harmonic and configure it from there:

 

[DUKE-DUKE]

Hi DUKE-DUKE,

You'll need to install the foobar VST plugin adapter (foo_vst, version 2.4 is what I've used before).

Then, in preferences you should be able to add PK Harmonic (32 bit version) and Foobar will restart to activate it.

It'll look something like this:

View attachment 229961

Then go to DSP Manager, and enable PK Harmonic and configure it from there:

View attachment 229962

Ok perfect. From where can I download foo_vst, version 2.4, is there any link for it. Thank you very much!

 

[pkane]

Ok perfect. From where can I download foo_vst, version 2.4, is there any link for it. Thank you very much!

Don't want to post a link to some download website that I've not tested myself. The page supporting the plugin is here, there should be a download option somewhere on this page:

https://wiki.hydrogenaud.io/index.php?title=Foobar2000:Components/VST_2.4_adapter_(foo_vst)

 

[DUKE-DUKE]

Ok. I have downloaded from the web that you have indicated me the PKHarmonic32, in the folder already unzipped there are two files: The PK harmonic32.msi and another called setup.exe which of the two files to install first? Thank you very much.

 

[pkane]

Ok. I have downloaded from the web that you have indicated me the PKHarmonic32, in the folder already unzipped there are two files: The PK harmonic32.msi and another called setup.exe which of the two files to install first? Thank you very much.

Just start setup.exe from that folder. It'll automatically use the .msi file to install the plugin.

 

[DUKE-DUKE]

Just start setup.exe from that folder. It'll automatically use the .msi file to install the plugin.

Ok. I have followed your instructions, first the setup.exe and then the PKHarmonic32, everything has been installed correctly in foobar2000, now I want to see the PKHarmonic interface panel to regulate the harmonics, how can I access to see the interface? Thank you very much.

 

[pkane]

Ok. I have followed your instructions, first the setup.exe and then the PKHarmonic32, everything has been installed correctly in foobar2000, now I want to see the PKHarmonic interface panel to regulate the harmonics, how can I access to see the interface? Thank you very much.

After making PK Harmonic active (shown below under Active DSPs middle column), click on the three dots to the right of the name.

 

[DUKE-DUKE]

After making PK Harmonic active (shown below under Active DSPs middle column), click on the three dots to the right of the name.

Ok, perfect, once the harmonics are adjusted, do I have to press the bypass button at the bottom of the interface to memorize the preferences, or does this button have another function and if so, what is it for? Thank you very much.