Introducing OPRA, a powerful new headphone toolkit for Roon and ARC

[formdissolve]

Introducing OPRA, a powerful new headphone toolkit for Roon and ARC

Hey Everyone, We’re excited to announce the arrival of OPRA (Open Profiles for Revealing Audio) in Roon and ARC! What is OPRA? OPRA is an open, community-maintained GitHub repository delivered by Roon that gives audio experts and sound enthusiasts a trusted, collaborative platform for...

community.roonlabs.com

What is OPRA?​

OPRA is an open, community-maintained GitHub 130 repository delivered by Roon that gives audio experts and sound enthusiasts a trusted, collaborative platform for precisely crafted EQ profiles that optimize a wide range of headphone models.

OPRA represents the first comprehensive effort to establish a reliable, community-driven source that facilitates routing headphone EQ profiles directly into software, providing an accessible space for headphone enthusiasts to gather, explore, and contribute.

Today OPRA contains EQ profiles for hundreds of popular headphone models. We expect that number to grow as people around the world leverage these profiles to improve the performance of their headphones and contribute their own profiles to OPRA. We’re already exploring collaborations with key figures like oratory1990 and will share more on that soon.

 

[formdissolve]

This could be a cool new addition to Roon for those that have a large collection of headphones

 

[Jimbob54]

Smells a lot like autoeq with a roon badge slapped on . Any involvement from @jaakkopasanen ?

 

[formdissolve]

Smells a lot like autoeq with a roon badge slapped on . Any involvement from @jaakkopasanen ?

I think if it was open source enough for users to share profiles and be able to download them (like when Amir shares his Roon EQ in a review) it could be a very welcome feature

 

[Berwhale]

Smells a lot like autoeq with a roon badge slapped on . Any involvement from @jaakkopasanen ?

This doesn't seem much different to PowerAmp pulling PEQ from AutoEQ on my phone, or PEACE pulling it into EAPO on my PC, or the Qudelix Chrome add-in pulling it into my Q5K or PlexAmp pulling (GEQ) onto my RaspberryPi based headless PlexAmp box (or the Moondrop Link App pulling shared PEQs from Moondrop repo).

It's not like they don't attribute the source of the PEQ...

 

[Jimbob54]

This doesn't seem much different to PowerAmp pulling PEQ from AutoEQ on my phone, or PEACE pulling it into EAPO on my PC, or the Qudelix Chrome add-in pulling it into my Q5K or PlexAmp pulling (GEQ) onto my RaspberryPi based headless PlexAmp box (or the Moondrop Link App pulling shared PEQs from Moondrop repo).

It's not like they don't attribute the source of the PEQ...

View attachment 406183

I hadn't dug that far into it . But yes, clearly that's exactly what it is.

 

[Berwhale]

I hadn't dug that far into it . But yes, clearly that's exactly what it is.

It's amazing how PEQ has become so accessible on so many devices in such a short time. We should all thank @jaakkopasanen for that!

 

[kemmler3D]

 

[surjray]

From the OPRA GitHub repository, this is supremely interesting:
aggregated EQ profiles
A whole bunch of headphone/IEM EQ profiles, after ingesting from AutoEQ, and possibly some other contributors' links!

 

[Mulder]

ROON doesn’t tell anything about target curves. For the user it is kind of a auto-eq in the blind.

 

[formdissolve]

ROON doesn’t tell anything about target curves. For the user it is kind of a auto-eq in the blind.

I think his point is that it won't be in the blind since it will be labelled as such per Brand and Model. I kind of misread the details of this OPRA implementation in that I thought it would allow a user to import their own PEQ files - seems like it won't allow that, or maybe it will some day? Seems weird it wouldn't since if you run a back up it def saves those PEQ settings somehow.

 

[jhwalker]

I think his point is that it won't be in the blind since it will be labelled as such per Brand and Model. I kind of misread the details of this OPRA implementation in that I thought it would allow a user to import their own PEQ files - seems like it won't allow that, or maybe it will some day? Seems weird it wouldn't since if you run a back up it def saves those PEQ settings somehow.

Individuals will be able to submit EQ settings for inclusion in the database. Submissions will be vetted by Roon staff before acceptance, however (per discussion at the Roon forum).

 

[CedarX]

Individuals will be able to submit EQ settings for inclusion in the database. Submissions will be vetted by Roon staff before acceptance, however (per discussion at the Roon forum).

Moondrop and I believe Fiio are following that path in the portable stuff.
What puzzles me is the “vetting” part: how does Roon’ staff know what’s acceptable / what’s not, based on what? If they do “know better”… why don’t they load their own EQ?

 

[jhwalker]

Moondrop and I believe Fiio are following that path in the portable stuff.
What puzzles me is the “vetting” part: how does Roon’ staff know what’s acceptable / what’s not, based on what? If they do “know better”… why don’t they load their own EQ?

I don't think they're trying to vet what's "better" or not - just making sure the files are formatted correctly, contain no malware - that kind of thing.

From the readme:

"How is Roon Labs involved in this project?

Roon has set up the repository, defined the git-based database format, built the documentation and tooling, and created a system that makes this data available to software that might make use of it. We have also contributed significant amounts of vendor and product artwork to ensure that products based on OPRA look great.

We will be approving PRs as the community builds out the repository, and as leaders emerge in the community, we will share this responsibility with others to ensure that this project is resilient in the long term.

Going forward, we will work to keep the data set clean and consistent so that when it is utilized within a product, the experience is great. We will use our graphic design team to maintain high quality product and manufacturer artwork, as we recognize that many people interested in contributing data may not be in a position to produce high quality graphics assets."

 

[Keith_W]

 

[CedarX]

I don't think they're trying to vet what's "better" or not - just making sure the files are formatted correctly, contain no malware - that kind of thing.

From the readme:

"How is Roon Labs involved in this project?

Roon has set up the repository, defined the git-based database format, built the documentation and tooling, and created a system that makes this data available to software that might make use of it. We have also contributed significant amounts of vendor and product artwork to ensure that products based on OPRA look great.

We will be approving PRs as the community builds out the repository, and as leaders emerge in the community, we will share this responsibility with others to ensure that this project is resilient in the long term.

Going forward, we will work to keep the data set clean and consistent so that when it is utilized within a product, the experience is great. We will use our graphic design team to maintain high quality product and manufacturer artwork, as we recognize that many people interested in contributing data may not be in a position to produce high quality graphics assets."

What beg questions are these parts from the readme:

Where is the data coming from?​

This repository is intended to aggregate the output of major creators of EQ curves from the headphones communities. We have kicked things off by ingesting and cleaning the data from the AutoEQ project, as it is already released under a permissive license.

How do I become a major creator of EQ curves? Do I need to write a script generating a few thousands of random EQs for every headphones in the market to be considered a “major creator”?

Then later in the readme:

Will community members be able to approve PRs?​

As strong contributors and leaders emerge in the community, we will distribute merge permissions accordingly.

What will make me strong and emerge in the community? Who is going to decide that, based on what?

 

[Emlin]

Parasitise the free work of others, or what? Cnuts.

 

[Mulder]

I think his point is that it won't be in the blind since it will be labelled as such per Brand and Model.

His? Who is "he"?
EQ related just to brand and model says nothing about the target curve. EQ as implemented by ROON is almost useless as you don´t know what it is aiming for,