EqualizerAPO

[steph_tsf]

Hi, I went on SoundForge, seeing how EqualizerAPO does. It does very well. There are 37,240 downloads per week, mostly 64-bit. One can insert a VST plugin .dll into the EqualizerAPO audio pipeline. EqualizerAPO can execute such VST plugin .dll in two different modes : the "normal" mode, and the "embed" mode. The application must not bypass the system effect infrastructure (APIs like ASIO or WASAPI exclusive mode can not be used).
Can somebody provide an example of a VST plugin compiled by Flowstone, duly inserted into the EqualizerAPO audio pipeline?
Can such VST plugin consist into one VU-meter showing the volume of mike jack, along with two VU-meters showing the volumes of the left and right speakers? One need a single VST, able to process the "inputs" and the "outputs". The aim is to embed a dual-channel FFT Analyzer VST plugin (of course compiled by Flowstone) into the EqualizerAPO audio pipeline, allowing the Windows PC to embed a dual-channel FFT analyzer, computing the FFT of the line-in cinch, divided by the FFT of the line-out cinch. One could add a delay line for trying restoring a proper time-alignment, for the phase measurement to remain exact.

[juha_tp]

Unfortunately,
- VST support is quite limited ATM (basic features supported, ... metering isn't "yet" possible).

Fortunately,
- there's this integration with VB-Audio's Voicemeeter (I prefer BANANA version) so you be able to monitor I/O levels there... (and also route signal to any VST hosting software from there as well) ... and even use ASIO/KS/WASAPIex output with EqualizerAPO features enabled...).

[steph_tsf]

Flowstone being solely dedicated to Windows, there is a moral obligation consisting in compiling a Windows "Audio Processing Object" (APO) operating as stereo copy to ASIO, leaving all audio DSP, front panel display, and front panel control to Flowstone.

The great idea is that a .fsm that's exploiting a ASIO branch that's emanating from a APO, natively becomes guaranteed to run system-wide whatever the origin of the sound : Youtube, Foobar, Media Player Classic, etc.

Speaking of a laptop computer, the built-in soundcard (RealTek HD Audio) must remain active. This way, the built-in mike and built-in stereo speakers (or headphones) remain active. In the same vein, Bluetooth headphones must still be used. In case the laptop PC is used as home-theater, one must be able to select HDMI as audio device (eight PCM channels), for connecting the laptop computer to a HDMI-enabled 5.1 audio amplifier acting as HDMI selector and repeater.

Consider the following example.
The aim is to rely on such laptop computer, also as Stereo Audiophile Station.
For this, we add a ASIO subsystem (role of VAC), we copy the stereo audio to a ASIO branch (role of the APO), we implement a 2-way stereo crossover (role of Flowstone), and we hook a Behringer UMC404HD USB soundcard as play device, along with its ASIO driver.
You install the Behringer UMC404HD ASIO driver.
You install VAC (Virtual Audio Cable)
You design a .fsm.
It embeds the ASIO-in block.
It grabs the stereo audio that's made available by the APO.
It splits such stereo audio into four audio channels for implementing a stereo 2-way crossover and equalizer.
It embeds the ASIO-out block.
It transfers the four audio channels to the four analog outputs of the Behringer UMC404HD USB soundcard.
It doesn't exploit the four analog inputs of the Behringer UMC404HD USB soundcard.
You let Flowstone compile such .fsm as .exe that you add on the Windows "startup" program list.

Please note, VAC (Virtual Audio Cable) remains required :
- for telling that the ASIO source is the APO (instead of the Behringer UMC404HD ADCs)
- for telling that the ASIO sink is the Behringer UMC404HD DACs

Can somebody tell if what I am envisioning is feasible?
Any comment welcome.

[trogluddite]

If I've understood correctly, I don't think it would work. FlowStone is limited to using a single audio driver, as it's the only way to ensure sample-clock synchronisation, so it's ASIO sink and source have to be the same device. Whether there's a sneaky way to do it using VAC as FlowStone sink/source, I can't say as I haven't used it, but it's the only possible workaround that I can think of.

[chjan]

I wonder if EAPO (most unfortunately) is only 64bit (VST30), while FS is only 32bit (vst24). I did the same survey last year and this is what I found. Anyone that could confirm this?

Hi, I went on SoundForge, seeing how EqualizerAPO does. It does very well. There are 37,240 downloads per week, mostly 64-bit. One can insert a VST plugin .dll into the EqualizerAPO audio pipeline. EqualizerAPO can execute such VST plugin .dll in two different modes : the "normal" mode, and the "embed" mode. The application must not bypass the system effect infrastructure (APIs like ASIO or WASAPI exclusive mode can not be used).
Can somebody provide an example of a VST plugin compiled by Flowstone, duly inserted into the EqualizerAPO audio pipeline?
Can such VST plugin consist into one VU-meter showing the volume of mike jack, along with two VU-meters showing the volumes of the left and right speakers? One need a single VST, able to process the "inputs" and the "outputs". The aim is to embed a dual-channel FFT Analyzer VST plugin (of course compiled by Flowstone) into the EqualizerAPO audio pipeline, allowing the Windows PC to embed a dual-channel FFT analyzer, computing the FFT of the line-in cinch, divided by the FFT of the line-out cinch. One could add a delay line for trying restoring a proper time-alignment, for the phase measurement to remain exact.

[juha_tp]

I wonder if EAPO (most unfortunately) is only 64bit (VST30), while FS is only 32bit (vst24). I did the same survey last year and this is what I found. Anyone that could confirm this?

Both 32-bit and 64-bit OS's and VST's are supported (the plugin's architecture has to match the OS architecture).
https://sourceforge.net/projects/equali ... les/1.2.1/