Convolver VST plugins for macOS

[asdf1000]

Hi

 

Does anyone know of convolver VST plugins for macOS ?

 

I'm looking to use FIR filters to convolve Spotify/Pandora/Netflix audio , through AudioHijack/SoundSource which accept VST plugins

 

 

[fresponse]

Hi 

 

FYI you can use my own free convolution plugin if you are ready to do some files manipulation.

The plugin is available here HAFconvo in Audio Unit format for Mac 

 

It is a "true" stereo convolution engine so using stereo wave files for filters definition :

True stereo mapping

 

As this tool has been designed for the customers of my service, you just need to create a "HAF" folder in your "Documents" folder and put your filters respecting the true stereo mapping described above and following this naming convention : HAF_xxx_HL.wav and HAF_xxx_HR.wav where xxx is the rounded sampling rate (44, 48, 88, 96, 176, 192, 352, 384) The plugin will automatically select the right files depending on the actual sampling rate.

 

If you just want to use stereo convolution file, you can use a tool like Audacity to set the files like this

- HAF_xxx_HL.wav : put your left convolution file on left channel and silent on right channel

- HAF_xxx_HR.wav : put your right convolution file on right channel and silent on left channel

 

Hope this can help,

Thierry

 

 

[asdf1000]

41 minutes ago, fresponse said:

Hi 

 

FYI you can use my own free convolution plugin if you are ready to do some files manipulation.

The plugin is available here HAFconvo in Audio Unit format for Mac 

 

It is a "true" stereo convolution engine so using stereo wave files for filters definition :

True stereo mapping

 

As this tool has been designed for the customers of my service, you just need to create a "HAF" folder in your "Documents" folder and put your filters respecting the true stereo mapping described above and following this naming convention : HAF_xxx_HL.wav and HAF_xxx_HR.wav where xxx is the rounded sampling rate (44, 48, 88, 96, 176, 192, 352, 384) The plugin will automatically select the right files depending on the actual sampling rate.

 

If you just want to use stereo convolution file, you can use a tool like Audacity to set the files like this

- HAF_xxx_HL.wav : put your left convolution file on left channel and silent on right channel

- HAF_xxx_HR.wav : put your right convolution file on right channel and silent on left channel

 

Hope this can help,

Thierry

 

 

 

Wow, thanks so much Thierry! 

 

So your 1st method above is for when using 2 x mono files and your 2nd method above is for combining the 2 mono files into stereo with Audacity?

 

What program do you recommend your customers on macOS? Rogue Amoeba SoundSource works well? It seems much simpler than AudioHijack and by the same company.

 

Thanks again !

 

[fresponse]

In all cases you need to end up with 2 stereo waves files following this mapping : so if you start from a stereo wave file you first need to split it in 2 separate channels before assembling the _HL and _HR wave files, like described in my previous post.

 

The confusion certainly comes from the fact that my mention of "stereo convolution" does not relate to the way the 2 filters are set (one stereo file or 2 mono) but more to the fact that there is only 2 filters (one for each channel). On the other hand a "true stereo convolution" requires 4 filters, and this is why you need to feed the "missing" filters with silent.

 

I have no personal experience with SoundSource, but any player or audio system manager accepting AU plugins is fine,

Thierry

 

[bluenoise]

Melda has great convolver.

[macuniverse]

3 hours ago, fresponse said:

It is a "true" stereo convolution engine so using stereo wave files for filters definition :

 

This is interesting but I'm not sure I understand the measurement process here.

 

How do you get two stereo wav files for this purpose? Do you need a setup with two mic or can you record four mono wav files and combine them as stereo pairs later on? 

[fresponse]

58 minutes ago, macuniverse said:

 

This is interesting but I'm not sure I understand the measurement process here.

 

How do you get two stereo wav files for this purpose? Do you need a setup with two mic or can you record four mono wav files and combine them as stereo pairs later on? 

 

It is a little bit off topic but I use true stereo for my DRC service as I am offering some unique features like crosstalk reduction and direct / reverberant field correction.

[macuniverse]

On 6/19/2020 at 11:57 PM, fresponse said:

It is a little bit off topic but I use true stereo for my DRC service as I am offering some unique features like crosstalk reduction and direct / reverberant field correction.

 

It's not answering my question but thanks for the info. I was just curious about the measurement process to get true stereo FIR filters.

[asdf1000]

On 6/19/2020 at 9:57 PM, fresponse said:

It is a little bit off topic

 

I don't mind at all if you expand on this

[fresponse]

I can only answer on how I personally use true stereo filters :

 

- for loudspeakers / room correction and model based crosstalk reduction, the measurements have to be performed with a mono mic and for left and right channels independently

 

- for HRTF based crosstalk reduction, the measurements have to be performed with a binaural mic (miniature microphones to be placed at ears entrance) and for left and right channels independently

 

[macuniverse]

Thanks, quite interesting.